Port the upstream ptrCast() function (AstGen.zig:8969-9087) which handles
nested pointer cast collapsing. All five pointer cast builtins (@ptrCast,
@alignCast, @addrSpaceCast, @constCast, @volatileCast) now route through
a single ptrCastBuiltin() function that:
- Walks inward through nested builtin calls accumulating flags
- Handles @fieldParentPtr nesting (with accumulated outer flags)
- Emits ptr_cast_full, ptr_cast_no_dest, or simple ptr_cast based on
combined flags and whether a result type is needed
This fixes compile errors in field_parent_ptr.zig and switch.zig where
@alignCast(@fieldParentPtr(...)) needed nested cast support.
Also adds @addrSpaceCast support (previously missing).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix single-arg @TypeOf to use `scope` instead of `&gz->base` for the
sub-block parent, matching upstream (AstGen.zig:9104). This fixes
local variable visibility inside @TypeOf arguments.
- Implement multi-arg @TypeOf using ZIR_EXT_TYPEOF_PEER extended
instruction (AstGen.zig:9120-9146).
- Remove debug fprintf from SET_ERROR macro and structDeclInner.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement unionDeclInner (AstGen.zig:5289-5466) to properly handle
union container declarations instead of falling through to
structDeclInner. This fixes tupleDecl errors for void union fields
(A, B, Compiled, x86_64) and resolves localVarRef failures for
union field identifiers.
Add builtins: @hasDecl, @hasField (@hasDeclOrField pattern),
@clz, @ctz, @popCount, @byteSwap, @bitReverse (bitBuiltin pattern).
Add setUnion with UnionDeclSmall packing for ZIR_EXT_UNION_DECL.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add builtins: @sqrt, @sin, @cos, @tan, @exp, @log, @abs, @floor, @ceil,
@round, @trunc, @rem, @mod, @divFloor, @divTrunc, @shlExact, @shrExact,
@setFloatMode, @call (multi-arg), @shuffle (multi-arg).
Increase function parameter scope/inst arrays from 32 to 256 to support
functions with 40+ parameters (call.zig corpus test).
Add COMPTIME_REASON_CALL_MODIFIER and COMPTIME_REASON_SHUFFLE_MASK.
Temporarily clamp source cursor backward movement instead of asserting
(TODO: investigate root cause in declaration processing).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add COMPTIME_REASON_EXPORT_OPTIONS constant (value 15) and complete the
@export builtin implementation. Remove all debug fprintf/printf output
and stdio.h include to pass clean builds.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port multiple features from AstGen.zig:
- fnProtoExpr/fnProtoExprInner: function types as expressions
- arrayTypeSentinelExpr: [N:sentinel]T array types
- Extern fn_decl without body (implicit CCC)
- 12 builtins: ptrFromInt, Vector, setRuntimeSafety, intFromError,
clz, branchHint, bitSizeOf, fieldParentPtr, splat, offsetOf,
inComptime, errorFromInt, errorCast alias
- Fix namespace scope parent: use caller's scope instead of gz->base,
allowing inner structs to reference outer locals (fixes S2, name, U)
- Fix addFunc/addFuncFancy: don't emit src_locs when body is empty
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The C parser uses OPT() macro which stores UINT32_MAX as the "none"
sentinel for optional AST node indices in extra_data. The rlExpr
(AstRlAnnotate) and exprRl functions were checking `!= 0` for these
fields, treating UINT32_MAX as a valid node index and causing segfaults.
Fixed optional field checks for fn_proto_one, fn_proto extra data
(param, align, addrspace, section, callconv), while cont_expr,
global_var_decl type_node, and slice_sentinel end_node.
Also added behavior test corpus files and FAIL: diagnostic to
the corpus test runner.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix multiple bugs found via the array_list.zig corpus test:
- Fix anytype param ref/index double-conversion (addStrTok returns
a ref, don't add ZIR_REF_START_INDEX again)
- Implement is_generic param tracking via is_used_or_discarded
pointer in ScopeLocalVal
- Fix globalVarDecl declaration src_line: use type_gz.decl_line
instead of ag->source_line (which was advanced by init expression)
- Fix cppcheck warning: remove redundant (0u << 2) in bitmask
- Implement fetchRemoveRefEntries and ret_param_refs in addFunc
- Add func_fancy case to buildHashSkipMask in test
- Fix valgrind: zero elem_val_imm padding, skip addNodeExtended
undefined small field, handle more padding-sensitive tags
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Consolidate the two separate test modules (test_mod via
lib/std/zig/zig0_test.zig + astgen_test_mod via stage0_test_root.zig)
into a single test module rooted at stage0_test_root.zig.
The zig0_test.zig bridge approach ran std's parser/tokenizer tests with
C comparison enabled, but the stage0/ test files already do the same
C-vs-Zig comparison directly via @cImport. The only "lost" tests are an
unnamed root test block and a Zig-only fuzz test — no zig0 coverage lost.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Consolidate the two separate test modules (test_mod via
lib/std/zig/zig0_test.zig + astgen_test_mod via stage0_test_root.zig)
into a single test module rooted at stage0_test_root.zig.
The zig0_test.zig bridge approach ran std's parser/tokenizer tests with
C comparison enabled, but the stage0/ test files already do the same
C-vs-Zig comparison directly via @cImport. The only "lost" tests are an
unnamed root test block and a Zig-only fuzz test — no zig0 coverage lost.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Implement assignDestructure() and assignDestructureMaybeDecls() with
RL_DESTRUCTURE result location, DestructureComponent types, rvalue
handling for validate_destructure/elem_val_imm/store_node, and array
init optimization.
- Fix tryResolvePrimitiveIdent to allow bit_count==0 (u0/i0 types) and
reject leading zeros (u01, i007).
- Add nodeIsTriviallyZero and slice_length optimization for
arr[start..][0..len] patterns in AST_NODE_SLICE and
AST_NODE_SLICE_SENTINEL cases.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- blockExpr: call rvalue on void result for unlabeled blocks, matching
upstream AstGen.zig:2431. This was causing a missing STORE_NODE when
empty blocks like {} were used as struct field values with pointer RL.
- identifierExpr: call rvalueNoCoercePreRef after LOAD in local_ptr case,
matching upstream AstGen.zig:8453-8454.
- Implement AST_NODE_ARRAY_MULT (** operator) with ArrayMul payload,
matching upstream AstGen.zig:774-785.
- Enable parser_test.zig and astgen_test.zig corpus tests.
- Enable combined corpus test (all 5 files pass).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port switchExprErrUnion optimization for both catch and if patterns,
fix missing rvalue call in decl table lookup, fix identAsString
ordering for underscore error captures, and fill value_placeholder
with 0xaa to match upstream undefined pattern.
Enables corpus build.zig test.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add error capture scope to orelseCatchExpr (catch |err| now creates
a ScopeLocalVal for the captured error variable)
- Add @panic, @errorName, @field builtins
- Increase blockExprStmts scope arrays from 64 to 128 entries
(build.zig has 93 var decls in a single block)
corpus build.zig still skipped: needs switchExprErrUnion optimization
(catch |err| switch(err) pattern).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Valgrind doesn't support AVX-512 instructions (EVEX prefix 0x62).
The zig CC generates them for large struct copies on native x86_64
targets even at -O0 (e.g. vmovdqu64 with zmm registers).
Previously only avx512f was subtracted, which was insufficient —
the .evex512 feature (and other AVX-512 sub-features) also need
to be disabled to prevent EVEX-encoded 512-bit instructions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement several interconnected features for function declarations:
- noalias_bits: Track which parameters have the noalias keyword by setting
corresponding bits in a uint32_t (supports up to 32 parameters)
- is_var_args: Detect ellipsis3 (...) token in parameter list
- is_noinline/has_inline_keyword: Detect noinline/inline modifiers
- callconv handling: Extract callconv_expr from fn_proto variants, create
cc_gz sub-block, emit builtin_value for explicit callconv() or inline
- func_fancy instruction: When any of cc_ref, is_var_args, noalias_bits,
or is_noinline are present, emit func_fancy instead of func/func_inferred
with the appropriate FuncFancy payload layout
- fn_var_args: Track in AstGenCtx for body code that checks it
- BuiltinValue constants: Add all ZIR_BUILTIN_VALUE_* defines to zir.h
- addBuiltinValue helper: Emit extended builtin_value instructions
Generic tracking (any_param_used, ret_ty_is_generic, ret_body_param_refs)
is not yet implemented as it requires is_used_or_discarded support in
ScopeLocalVal scope lookups.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Move rvalue calls inside builtinCall (all builtins now call rvalue
internally, matching upstream) and remove outer rvalue wrap from
call site
- Add rlResultTypeForCast that errors when no result type is available,
used by @bitCast, @intCast, @truncate, @ptrCast, @enumFromInt
- Fix @import to compute res_ty from result location instead of
hardcoding ZIR_REF_NONE
- Fix @embedFile to evaluate operand with coerced_ty=slice_const_u8_type
- Fix @cInclude/simpleCBuiltin to check c_import scope and use
comptimeExpr with coerced_ty=slice_const_u8_type
- Fix @cImport to pass actual block_result to ensure_result_used instead
of hardcoded ZIR_REF_VOID_VALUE
Not fixed: Issue 14 (ptrCast nested pointer cast collapsing) — upstream
routes @ptrCast through a dedicated ptrCast() function that walks nested
pointer cast builtins. Currently uses simple typeCast path only.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port two missing features from upstream AstGen.zig varDecl:
1. Add reachableExprComptime (AstGen.zig:418-438) which wraps init
expressions in comptimeExpr when force_comptime is set, and checks
for noreturn results. Replace plain exprRl calls in all three varDecl
paths (const rvalue, const alloc, var) with reachableExprComptime.
2. Extract comptime_token by scanning backwards from mut_token (matching
Ast.zig fullVarDeclComponents). For const path, set force_comptime to
wrap init in comptime block. For var path, use comptime_token to set
is_comptime which selects alloc_comptime_mut/alloc_inferred_comptime_mut
tags and sets maybe_comptime on the scope.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port two missing features from upstream AstGen.zig:
1. Handle identifier-named tests (decltest): when the token after `test`
is an identifier, set decl_id to DECL_ID_DECLTEST and record the
identifier string as the test name. Upstream performs full scope
resolution for validation which is skipped here.
2. Add `within_fn` field to AstGenCtx (mirrors AstGen.within_fn). Save,
set to true, and restore in both testDecl and fnDecl. This flag
propagates to maybe_generic on namespace scopes for container
declarations inside function/test bodies.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port two missing features from upstream AstGen.zig ret() function:
1. Add any_defer_node field to GenZir (AstGen.zig:11812) to track
whether we're inside a defer expression. Set it in defer body
generation and propagate via makeSubBlock. retExpr now checks
this field and errors with "cannot return from defer expression"
(AstGen.zig:8127-8135). Also reorder retExpr checks to match
upstream: fn_block null check first, then any_defer_node check,
then emitDbgNode.
2. Add reachableExpr wrapper (AstGen.zig:408-416) that calls exprRl
and checks refIsNoReturn to detect unreachable code. Use it in
retExpr instead of plain exprRl for the return operand
(AstGen.zig:8185-8186). nameStratExpr is left as TODO since
containerDecl does not yet accept a name_strategy parameter.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add two fixes from audit of ptrTypeExpr against upstream AstGen.zig ptrType:
1. Reject `[*c]allowzero T` with a compile error matching upstream
(AstGen.zig:3840-3842). C pointers always allow address zero, so
the allowzero modifier is invalid on them.
2. Save source_offset/source_line/source_column before typeExpr and
restore them before evaluating each trailing expression (sentinel,
addrspace, align). This ensures correct debug info source locations
matching upstream (AstGen.zig:3844-3846, 3859-3861, 3876-3878,
3885-3887).
Issue 3 (addrspace RL using addBuiltinValue) is skipped as
addBuiltinValue is not yet implemented.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port assignShift (AstGen.zig:3786) and assignShiftSat (AstGen.zig:3812)
from upstream, handling <<=, >>=, and <<|= operators as both statements
in blockExprStmts and expressions in exprRl. Previously these fell
through to SET_ERROR.
Add grouped_expression unwrapping loop in blockExprStmts (matching
AstGen.zig:2569-2630) so that parenthesized statements like `(x += 1)`
are correctly dispatched to assignment handlers instead of going through
the default unusedResultExpr path.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix three issues in the RL annotation pre-pass (rlExpr):
1. Label detection for `inline while`/`inline for` now accounts for
the `keyword_inline` token before checking for `identifier colon`,
matching upstream fullWhileComponents/fullForComponents logic.
2. `assign_destructure` now recurses into variable nodes and the value
expression with RL_RI_NONE, matching upstream behavior instead of
returning false without visiting sub-expressions.
3. `rlTokenIdentEqual` now handles @"..."-quoted identifiers by comparing
the quoted content rather than stopping at the `@` character, which
previously caused all @-quoted identifiers to compare as equal.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The exprRl function was wrapping blockExprExpr's return value in an
extra rvalue() call, but blockExprExpr already applies rvalue internally
for labeled blocks when need_result_rvalue=true. The upstream expr()
function at AstGen.zig:991 returns blockExpr's result directly without
extra rvalue wrapping. This could produce duplicate coercion/store
instructions for non-trivial result locations.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port two missing checks from upstream AstGen.zig rvalueInner to the C
rvalue function:
1. isAlwaysVoid (Zir.zig:1343-1608): When the result refers to an
instruction that always produces void (e.g., dbg_stmt, store_node,
export, memcpy, etc.), replace the result with void_value before
proceeding. This prevents emitting unnecessary type coercions or
stores on always-void instructions.
2. endsWithNoReturn (AstGen.zig:11068): When the current GenZir block
ends with a noreturn instruction, return the result immediately
without emitting any rvalue instructions. This avoids emitting dead
ZIR instructions after noreturn.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port the \u{NNNNNN} unicode escape parsing from upstream Zig's
string_literal.zig:parseEscapeSequence into both strLitAsString
(string literal decoding with UTF-8 encoding) and char_literal
(codepoint value extraction). Without this, \u escapes fell through
to the default branch which wrote a literal 'u' character, producing
incorrect ZIR string bytes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
BuiltinCall.Flags has ensure_result_used at bit 1, not bit 3 like
Call/FieldCall. Separate the case to use the correct bit.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Three bugs found by auditing against upstream AstGen.zig/AstRlAnnotate.zig:
1. rlExpr: defer was recursing into nd.rhs (always 0) instead of nd.lhs
(the actual deferred expression), so the RL annotation pass never
visited defer bodies.
2. addEnsureResult: compile_error was missing from the noreturn
instruction list, causing spurious ensure_result_used instructions
to be emitted after @compileError calls.
3. blockExprExpr: force_comptime was derived from gz->is_comptime,
but upstream blockExpr always passes force_comptime=false to
labeledBlockExpr. This caused labeled blocks in comptime contexts
to incorrectly emit BLOCK_COMPTIME + BREAK_INLINE instead of
BLOCK + BREAK.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix two parser bugs found by auditing against upstream Parse.zig:
1. In parseTypeExpr's while case, the continue expression was parsed
inline as `eatToken(COLON) ? expectExpr : 0` which missed the
required parentheses. Use parseWhileContinueExpr(p) instead,
matching what parseWhileExpr already does.
2. In expectStatement, comptime blocks used parseBlock() which only
matches `{ ... }`. Use parseBlockExpr() to also recognize labeled
blocks like `comptime label: { ... }`.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Match Zig's Signedness enum values (unsigned=1, signed=0) and
reorder int_type struct fields to match Zig's layout:
[src_node, bit_count, signedness, pad].
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Inline index_inst at usage site to narrow scope, initialize
var_init_rl.ctx to RI_CTX_NONE (matching upstream default).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- whileExpr: emit emitDbgNode before condition evaluation to match
upstream AstGen.zig:6579. Fixes astgen_test.zig corpus (1 missing
DBG_STMT).
- Block expressions in exprRl: wrap blockExprExpr result with rvalue()
to handle result location storage (RL_PTR → STORE_NODE, etc.).
Fixes parser_test.zig inst_len to exact match.
- parser_test.zig corpus now has matching inst_len and all tags, but
has 1 int_type data signedness mismatch (pre-existing issue).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Typed struct init empty (SomeType{}) was returning the result directly
without going through rvalue(), missing STORE_NODE/STORE_TO_INFERRED_PTR/
COERCE_PTR_ELEM_TY+REF emissions when result location requires storage.
Reduces parser_test.zig corpus diff from 5 to 1 instruction.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- retExpr: check nodesNeedRl to use RL_PTR with ret_ptr/ret_load instead of
always RL_COERCED_TY with ret_node. Handle .always/.maybe error paths with
load from ptr when needed.
- Use typeExpr() instead of expr()/exprRl() for type sub-expressions in
optional_type, error_union, merge_error_sets, and array elem types in
structInitExpr/arrayInitExpr. This generates BLOCK_COMPTIME wrappers for
non-primitive type identifiers.
- arrayInitExpr: only use ARRAY_INIT_REF for RL_REF (not RL_REF_COERCED_TY),
and pass non-ref results through rvalue().
- slice_sentinel: emit SLICE_SENTINEL_TY and coerce sentinel to that type.
All slice variants: coerce start/end to usize.
- COERCE_PTR_ELEM_TY in rvalue for RL_REF_COERCED_TY.
- rvalueNoCoercePreRef for local variable references.
- structInitExprPtr/arrayInitExprPtr for RL_PTR with OPT_EU_BASE_PTR_INIT.
- Typed struct init: use RL_COERCED_TY with field type for init expressions.
Reduces parser_test.zig corpus diff from 225 to 5 instructions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- @as builtin: propagate RL_TY with dest_type through exprRl instead of
evaluating operand with RL_NONE and manually emitting as_node. Matches
upstream AstGen.zig lines 8909-8920.
- rlResultType: add missing RL_REF_COERCED_TY case (elem_type extraction).
- continue handler: use AST_NODE_OFFSET_NONE for addBreak operand_src_node
instead of computing node offset. Upstream uses addBreak (not
addBreakWithSrcNode), which writes .none.
- varDecl: set init_rl.src_node = 0 for RL_PTR (upstream leaves
PtrResultLoc.src_node at default .none).
Enables astgen_test.zig corpus test — all corpus tests now pass.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
addInstruction() already returns idx + ZIR_REF_START_INDEX (a ref),
so the extra + ZIR_REF_START_INDEX on the inplace_arith_result_ty path
resulted in a double-offset (+248 instead of +124) being stored in
extra data for += and -= compound assignments.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- BREAK/CONTINUE: lhs is opt_token (null=UINT32_MAX), not opt_node
(null=0). Check nd.lhs != UINT32_MAX instead of != 0.
- ERROR_VALUE: last token is main_token + 2 (error.name has 3 tokens),
not main_token.
- advanceSourceCursor: replace silent return on backward movement with
assert, matching upstream behavior.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Cursor backward issue at inst 1557 (src_off goes 10502 -> 8256).
Needs investigation of statement ordering in switch expression body.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Save source cursor before evaluating sub-expressions in array_access
and @tagName (cursor was being mutated by inner expr calls)
- Add is_comptime guard to advanceSourceCursorToMainToken matching
upstream maybeAdvanceSourceCursorToMainToken (skip in comptime)
- Re-skip astgen_test.zig corpus (dbg_stmt mismatch remains at inst 1557)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Mechanically match upstream comptimeExpr signature which accepts ResultInfo.
This fixes coercion in comptime contexts (e.g. sentinel 0 becoming zero_u8
instead of generic zero when elem_type is u8).
- comptimeExpr: add ResultLoc rl parameter, thread to exprRl
- typeExpr: pass coerced_ty=type_type (matching upstream coerced_type_ri)
- ptrType: pass ty=elem_type for sentinel, coerced_ty=u29 for align,
coerced_ty=u16 for bit_range
- retExpr: set RI_CTX_RETURN
- tryExpr: set RI_CTX_ERROR_HANDLING_EXPR for operand
- orelseCatchExpr: set RI_CTX_ERROR_HANDLING_EXPR when do_err_trace
- ifExpr: set RI_CTX_ERROR_HANDLING_EXPR for error union condition
- shiftOp: set RI_CTX_SHIFT_OP, use as_shift_operand in rvalue
- breakResultInfo: don't forward ctx for discard case
- fnDecl ret_body break: use AST_NODE_OFFSET_NONE
Passes corpus tests for test_all.zig, build.zig, tokenizer_test.zig.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace linear scan of all string_bytes with a string_table that
only contains explicitly registered strings (via identAsString and
strLitAsString). This prevents false deduplication against multiline
string content that upstream's hash table would never match.
Also handle embedded null bytes in strLitAsString: when decoded string
contains \x00, skip dedup and don't add trailing null, matching upstream
AstGen.zig:11560. Fix c_include extended instruction small field to
0xAAAA (undefined) matching upstream addExtendedPayload.
Passes corpus tests for test_all.zig, build.zig, tokenizer_test.zig.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Major fixes to match upstream AstGen.zig:
- Call/FieldCall: flags at offset 0, scratch_extra for arg bodies,
pop_error_return_trace from ResultCtx instead of hardcoded true
- CondBr: write {condition, then_body_len, else_body_len} then bodies
(was interleaving lengths with bodies)
- For loop: use instructionsSliceUpto, resurrect loop_scope for
increment/repeat after then/else unstacked
- validate_struct_init_result_ty: un_node encoding (no extra payload)
- addEnsureResult: flags always at pi+0 for all call types
- addFunc: param_insts extra refs for correct body attribution
- array_init_elem_type: addBin instead of addPlNodeBin
- Pre-register struct field names for correct string ordering
- comptime break_inline: AST_NODE_OFFSET_NONE
- varDecl: pass RI_CTX_CONST_INIT context
- Rewrite test infrastructure with field-by-field ZIR comparison
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Comprehensive firstToken: handle all AST node types matching upstream
Ast.zig (call, struct_init, slice, binary ops, fn_decl, blocks, etc.)
instead of falling through to main_token for unknown types.
- Slice LHS uses .ref rl: pass RL_REF_VAL for slice_open/slice/
slice_sentinel LHS evaluation, matching upstream AstGen.zig:882-939.
- fnDecl param name before type: resolve parameter name via
identAsString before evaluating the type expression, matching upstream
AstGen.zig:4283-4335 ordering.
- Break label comparison: use tokenIdentEql (source text comparison)
instead of identAsString to avoid adding label names to string_bytes,
matching upstream AstGen.zig:2176 tokenIdentEql.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix call instruction not being appended to gz's instruction list due
to a debug range check left in callExpr. This caused emitDbgStmt's
dedup logic to not see call instructions, resulting in 10 missing
dbg_stmt instructions in the build.zig corpus test.
Also port shiftOp from upstream (AstGen.zig:9978) for shl/shr operators,
which need typeof_log2_int_type for RHS coercion and their own emitDbgStmt.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port the missing rvalue() call in orelseCatchExpr's then-branch
(AstGen.zig:6088-6091). The upstream applies rvalue with
block_scope.break_result_info to the unwrapped payload before
breaking, which emits as_node coercion when needed. The C code
was passing the unwrapped value directly to addBreak without
coercion.
Also update the corpus build.zig TODO with current diff state.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Use nodeIndexToRelative(decl_node) = node - proto_node for the
break_inline returning func to declaration, matching upstream
AstGen.zig:4495. Previously used AST_NODE_OFFSET_NONE which
produced incorrect extra data values.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Handle anonymous struct init (.{.a = b}) when the result location has
a type (RL_TY/RL_COERCED_TY). Emit validate_struct_init_result_ty and
struct_init_field_type instructions, matching upstream AstGen.zig:
1706-1731 and structInitExprTyped.
Also add validate_struct_init_result_ty to test comparison functions
and fix char literal escape sequences.
build.zig corpus: improved from 25 to 3 inst diff (remaining:
as_node coercion in rvalue).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add RL_REF_COERCED_TY to the result location enum, matching the upstream
ref_coerced_ty variant. This carries a pointer type through the result
location so that array init and struct init expressions can generate
validate_array_init_ref_ty and struct_init_empty_ref_result instructions.
- Use RL_REF_COERCED_TY in address_of when result type is available
- Handle in arrayInitDotExpr to emit validate_array_init_ref_ty
- Handle in structInitExpr for empty .{} to emit struct_init_empty_ref_result
- Add RL_IS_REF() macro for checking both RL_REF and RL_REF_COERCED_TY
- Update rvalue to treat RL_REF_COERCED_TY like RL_REF
tokenizer_test.zig corpus: instructions now match (7026). Extra and
string_bytes still have diffs.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
astgen_test.zig corpus: extra_len and string_bytes diffs remain.
tokenizer_test.zig/build.zig: need ref_coerced_ty result location.
Both issues require significant architectural work in the AstRlAnnotate
pre-pass to properly support typed result locations (ref_coerced_ty,
coerced_ty) that generate different instruction sequences.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add escape sequence handling to strLitAsString (\n, \r, \t, \\, \',
\", \xNN). Previously copied string content byte-for-byte.
- Fix strLitAsString quote scanning to skip escaped quotes (\\").
- Handle @"..." quoted identifiers in identAsString.
- Add test name and field name strings to scanContainer to match
upstream string table insertion order.
- Skip dedup against reserved index 0 in strLitAsString to match
upstream hash table behavior.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port the emitDbgNode(parent_gz, cond_expr) call from upstream
AstGen.zig:6335 into ifExpr. This emits a DBG_STMT instruction
before evaluating the if condition, matching the reference output.
Enable astgen_test.zig corpus test (still has extra_len and
string_bytes mismatches to fix).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add corpus tests for tokenizer_test.zig and astgen_test.zig, skipped
pending fixes:
- tokenizer_test.zig: needs ref_coerced_ty result location (428 inst diff)
- astgen_test.zig: 1 missing dbg_stmt, extra_len mismatch (375 extra diff)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix arrayInitExpr for [_]T{...} patterns to use elem_type as the
coercion target for each element expression (RL_COERCED_TY), matching
upstream AstGen.zig:1598-1642. Previously used RL_NONE_VAL which
produced different instruction sequences.
Add struct init typed and enum decl isolated tests.
Note: build.zig corpus still needs ref_coerced_ty result location
support and fn body ordering fixes — left as TODO.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add enumDeclInner and setEnum, ported from upstream AstGen.zig:5508-5729.
Dispatch in containerDecl based on main_token keyword (struct vs enum).
Fix fnDecl to pass proto_node (not fn_decl node) to makeDeclaration,
matching upstream AstGen.zig:4090.
Improve is_pub detection in fnDecl to use token tags instead of string
comparison.
Add func/func_inferred proto_hash to the test hash skip mask, and
enum_decl fields_hash skipping.
Tests added: enum decl.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rewrite globalVarDecl to properly handle extern/export/pub/threadlocal
variables with type/align/linksection/addrspace bodies. Port the full
Declaration extra data layout from upstream AstGen.zig:13883, including
lib_name, type_body, and special bodies fields.
Add extractVarDecl to decode all VarDecl node types (global, local,
simple, aligned) and computeVarDeclId to select the correct
Declaration.Flags.Id.
Fix firstToken to scan backwards for modifier tokens (extern, export,
pub, threadlocal, comptime) on var decl nodes, matching upstream
Ast.zig:634-643.
Test added: extern var.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port errorSetDecl from upstream AstGen.zig:5905-5955. Replaces the
SET_ERROR placeholder at the ERROR_SET_DECL case. Loops tokens between
lbrace and rbrace, collecting identifier strings into the ErrorSetDecl
payload.
Also add error_set_decl to the test comparison functions.
Tests added: empty error set, error set with members.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port WipMembers, field processing loop, nodeImpliesMoreThanOnePossibleValue,
and nodeImpliesComptimeOnly from upstream AstGen.zig. Struct fields are now
properly emitted with type expressions, default values, alignment, and
comptime annotations.
Also fix structDeclInner to add the reserved instruction to the GenZir
body (matching upstream gz.reserveInstructionIndex behavior) and use
AST_NODE_OFFSET_NONE for break_inline src_node in field bodies.
Tests added: single field, multiple fields, field with default, field
with alignment, comptime field.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
test_all.zig is 5 lines of @import statements and already produces
matching ZIR. Enable it as a standalone corpus test while keeping
the full corpus test skipped.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- continue: emit check_comptime_control_flow and
restore_err_ret_index_unconditional (matching AstGen.zig:2328-2334)
- forExpr: set loop_scope.continue_block = cond_block
(matching AstGen.zig:6974), allowing continue inside for loops
to target the correct scope
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add emitDbgStmt and result type from RL to typeCast builtins
(@intCast, @truncate, @ptrCast, @enumFromInt, @bitCast)
- Pass ResultLoc to builtinCall for result type access
- Fix @memset: upstream derives elem_ty via typeof+indexable_ptr_elem_type
and evaluates value with coerced_ty RL
- Fix @memcpy/@memset to return void_value (not instruction ref)
- Add builtinEvalToError: per-builtin eval_to_error lookup instead of
always returning MAYBE for all builtins
- Fix nodeMayAppendToErrorTrace: pass loop var 'n' to nodeMayEvalToError
instead of original 'node' parameter
Corpus: ref=4177 got=4160, mismatch at inst[557], gap=17
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add genDefers() with DEFER_NORMAL_ONLY/DEFER_BOTH_SANS_ERR modes
- Add countDefers() for checking defer types in scope chain
- Add genDefers calls to breakExpr, continueExpr, retExpr, tryExpr
- Add fn_block tracking to AstGenCtx (set in fnDecl/testDecl)
- Add return error.Foo fast path using ret_err_value instruction
- Fix fullBodyExpr scope: pass &body_gz.base instead of params_scope
- Fix blockExprStmts: guard genDefers with noreturn_stmt check
- Fix retExpr MAYBE path: correct dbg_stmt/restore ordering
- Save/restore fn_block in containerDecl (set NULL for nested structs)
- addEnsureResult now returns bool indicating noreturn
First ZIR tag mismatch moved from inst[211] to inst[428].
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port several AstGen.zig patterns to C:
- Thread ResultLoc through fullBodyExpr, ifExpr, switchExpr, callExpr,
calleeExpr (for proper type coercion and decl_literal handling)
- Add rlBr() and breakResultInfo() helpers mirroring upstream ri.br()
and setBreakResultInfo
- Implement labeled blocks with label on GenZir (matching upstream),
restoreErrRetIndex before break, and break_result_info
- Fix breakExpr to emit restoreErrRetIndex and use break_result_info
for value/void breaks (AstGen.zig:2150-2237)
- Add setBlockComptimeBody with comptime_reason field (was using
setBlockBody which omitted the reason, causing wrong extra layout)
- Add comptime_reason parameter to comptimeExpr with correct reasons
for type/array_sentinel/switch_item/comptime_keyword contexts
- Handle enum_literal in calleeExpr (decl_literal_no_coerce)
- Fix decl_literal rvalue wrapping for ty/coerced_ty result locs
All 5 corpus files now pass byte-by-byte ZIR comparison.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Port scope chain infrastructure, function parameters, local var_decl,
control flow (if/for/while/switch/orelse/catch/defer), labeled blocks,
break/continue, comparison/boolean/unary operators, array access,
field access rvalue, rvalue type coercion optimization, and many
builtins from upstream AstGen.zig. test_all.zig corpus passes;
4 remaining corpus files still have mismatches (WIP).
Also fix cppcheck/lint issues: safe realloc pattern, null checks,
const correctness, enable inline suppressions, comment out test
debug output for clean `zig build`.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Valgrind 3.26.0 cannot decode AVX-512 instructions. On AVX-512 capable
CPUs (e.g. Zen 4), Zig's standard library emits these instructions when
targeting native, causing immediate crashes. Subtract avx512f from the
CPU features when -Dvalgrind is set.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Compare the C parser's AST against Zig's std.zig.Ast.parse() output in
every testParse call. This catches structural mismatches (tokens, nodes,
extra_data) without needing a separate corpus.
Also fix two C parser bugs found by the new check:
- Empty anonymous init `.{}` now uses struct_init_dot_two (not
array_init_dot_two), matching the Zig parser.
- for-type-expr with single input and no else now emits for_simple
(not for with extra_data), matching the Zig parser's parseFor.
Skip the check under valgrind since Zig's tokenizer uses AVX-512.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Introduce zir.h/zir.c with ZIR instruction types (269 tags, 56 extended
opcodes, 8-byte Data union) ported from lib/std/zig/Zir.zig, and
astgen.h/astgen.c implementing the empty-container fast path that produces
correct ZIR for empty source files.
The test infrastructure in astgen_test.zig compares C astGen() output
field-by-field against Zig's std.zig.AstGen.generate() using tag-based
dispatch, avoiding raw byte comparison since Zig's Data union has no
guaranteed in-memory layout.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix 11 divergences where parser.c differed from Parse.zig in logic or
structure, not justified by C vs Zig language differences:
- parseContainerMembers: set trailing=false after test decl, add
field_state tracking (A1, A2)
- expectStatement: guard defer/errdefer behind allow_defer_var (A3)
- expectVarDeclExprStatement: wrap assignment in comptime node when
comptime_token is set (A4)
- parseBlock: guard semicolon check with statements_len != 0 (A5)
- parseLabeledStatement: add parseSwitchExpr call (A6)
- parseWhileStatement: restructure with else_required and early
returns to match upstream control flow (A7)
- parseForStatement: restructure with else_required/has_else and
early returns to match upstream control flow (A8)
- parseFnProto: fail when return_type_expr is missing (A9)
- expectTopLevelDecl: track is_extern, reject extern fn body (A10)
- parsePrefixExpr: remove TOKEN_KEYWORD_AWAIT case (A11)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Reorder function definitions so they follow the same order as upstream
zig/lib/std/zig/Parse.zig, making cross-referencing easier. Move
OperInfo and NodeContainerField typedefs to the header section, and add
forward declarations for parseParamDeclList and operTable that are now
needed due to the new ordering.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Rename assignOpTag to assignOpNode to match upstream. Extract inlined
code into separate functions to match upstream's structure:
expectTestDecl, expectIfStatement, expectParamDecl, parseSwitchProngList.
Add parseSingleAssignExpr for upstream API surface alignment.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Introduce a fail(p, "msg") inline function that stores the error message
in a buffer and longjmps, replacing ~52 fprintf(stderr,...)+longjmp pairs.
The error message is propagated through Ast.err_msg so callers can decide
whether/how to display it. Also add forward declarations for all static
functions and move PtrModifiers typedef to the type definitions section.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Skip 14 tests that require unimplemented parser features:
- 5 testCanonical/testTransform (primitive type symbols, invalid bit
range, doc comment validation, multiline string in blockless if)
- 9 testError/recovery (error detection for comptime, varargs,
semicolons, brackets, whitespace, ampersand)
Replace assert() in assertToken with longjmp to prevent crashes on
malformed input during testError tests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Restructure expectVarDeclExprStatement to match upstream Parse.zig's
approach: check for '=' first, then handle var decl init vs expression
statement separately. This fixes parsing of var decls with container
types (e.g., `const x: struct {} = val`), where the '}' of the type
was incorrectly treated as a block-terminated expression.
Also make container member parsing strict (longjmp on unexpected tokens
instead of recovery), and add for/while/labeled-block handling in
parseTypeExpr for function return types.
376/381 tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Sync parser_test.zig test section with upstream, adding ~40 new tests
(testError, testCanonical, testTransform). Remove extra blank lines
between tests to match upstream formatting.
Fix tokenizer keyword lookup bug: getKeyword() returned TOKEN_INVALID
when input was longer than a keyword prefix (e.g., "orelse" matched
"or" prefix then bailed out instead of continuing to find "orelse").
Fix parser to handle if/for/while expressions in type position (e.g.,
function return types like `fn foo() if (cond) i32 else void`). Add
labeled block support in parsePrimaryTypeExpr. Replace assert for
chained comparison operators with longjmp error.
365/381 tests pass. Remaining 16 failures are parser limitations for
specific syntax patterns and error recovery.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Replace 32 parse-error exit(1) calls with longjmp to allow callers to
detect and handle parse failures. The OOM exit(1) in
astNodeListEnsureCapacity is kept as-is.
Add has_error flag to Ast, wrap parseRoot() with setjmp in astParse(),
and update test infrastructure to use the C parser for testError tests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Extract shared helpers and fix error handling to align with upstream:
- Replace 7 assert() calls that crash on valid input with fprintf+exit
- Extract parsePtrModifiers() and makePtrTypeNode() to deduplicate
pointer modifier parsing from 4 inline copies into 1 shared function
- Extract parseBlockExpr() and parseWhileContinueExpr() helpers
- Move comptime wrapping into expectVarDeclExprStatement() via
comptime_token parameter
- Extract finishAssignExpr(), parseSwitchItem(), parseSwitchProng()
Net effect: 3233 → 3106 lines. All 298+ parser tests pass.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Update check_test_order.py to handle header/footer split correctly
when infrastructure code is at both start and end of file.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Update test content to match upstream exactly:
- "comptime block in container"
- "comment after empty comment"
- "comment after params"
- "decimal float literals with underscore separators"
- "container doc comments"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Update test content to match upstream:
- "arrays" (full upstream test content)
- "blocks" (add labeled block and blk: variants)
- "comptime" (full upstream test with comptime var, expressions)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "destructure" (implement assign_destructure in
expectVarDeclExprStatement)
- "infix operators" (partial — orelse as discard target deferred)
- "pointer attributes" (fix ** to parse inner modifiers per upstream)
- "slice attributes" (fix sentinel+align to use ptr_type node)
Fix test bodies to match upstream verbatim:
- "block with same line comment after end brace"
- "comments before var decl in struct"
- "comments before global variables"
- "comments in statements"
- "comments before test decl"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "pointer attributes"
- "slice attributes"
Fix ** pointer type to parse modifiers per upstream (no sentinel,
modifiers on inner pointer only).
Fix ptr_type selection when both sentinel and align are present
(use ptr_type with extra data instead of ptr_type_sentinel which
can't store alignment).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Update test content to match upstream exactly:
- "block with same line comment after end brace"
- "comments before var decl in struct"
- "comments before global variables"
- "comments in statements"
- "comments before test decl"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port 29 tests including:
- field access, multiline string, regression tests
- array formatting, function params, doc comments
- for loop payloads, switch items, saturating arithmetic
- inline for/while in expression context
- canonicalize symbols, pointer type syntax, binop indentation
Implement inline for/while in parsePrimaryExpr.
Remove unused tok variable from parsePrimaryExpr.
Deferred tests (need further work):
- "function with labeled block as return type"
- "Control flow statement as body of blockless if"
- "line comment after multiline single expr if"
- "make single-line if no trailing comma, fmt: off"
- "test indentation after equals sign" (destructuring)
- "indentation of comments within catch, else, orelse"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "remove newlines surrounding doc comment between members within container decl (1)"
- "remove newlines surrounding doc comment between members within container decl (2)"
- "remove newlines surrounding doc comment within container decl"
- "comments with CRLF line endings"
- "else comptime expr"
- "integer literals with underscore separators"
- "hex literals with underscore separators"
- "hexadecimal float literals with underscore separators"
- "C var args"
- "Only indent multiline string literals in function calls"
- "Don't add extra newline after if"
- "comments in ternary ifs"
- "while statement in blockless if"
- "test comments in field access chain"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "while" (full test with all variants)
- "for" (full test with all variants including testTransform)
Fix in parser.c:
- comptime var decl: don't wrap in comptime node (renderer
detects comptime from token positions)
- forPrefix: handle trailing comma in input list and capture list
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "asm expression with comptime content"
- "simple asm"
Fix asm_output to handle (identifier) operand without arrow.
Fix asm_simple zigData mapping to use node_and_token.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add AST_NODE_ASM_LEGACY for legacy string clobber format.
When asm clobbers use string literals ("clobber1", "clobber2"),
produce asm_legacy node instead of asm node.
Port tests:
- "preserves clobbers in inline asm with stray comma"
- "remove trailing comma at the end of assembly clobber"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Checks and fixes test ordering in parser_test.zig to match
upstream zig/lib/std/zig/parser_test.zig.
Usage:
python3 check_test_order.py # check only
python3 check_test_order.py --fix # reorder tests
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implement in parser.c:
- forPrefix: parse for input expressions and capture variables
- parseForExpr: for_simple and for AST nodes with optional else
- Handle for and while in parsePrimaryTypeExpr for top-level usage
Remove stale cppcheck knownConditionTrueFalse suppression.
Port test "top-level for/while loop".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "error set declaration"
- "union(enum(u32)) with assigned enum values"
- "resume from suspend block"
- "comments before error set decl"
- "comments before switch prong"
- "array literal with 1 item on 1 line"
- "comments in statements"
Implement in parser.c:
- suspend statement in expectStatement
- Fix error set decl to store lbrace token (not 0)
- Fix comptime statement to wrap inner expression
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "comment after if before another if"
- "line comment between if block and else keyword"
- "same line comments in expression"
- "add comma on last switch prong"
- "same-line comment after a statement"
- "same-line comment after var decl in struct"
- "same-line comment after field decl"
- "same-line comment after switch prong"
- "same-line comment after non-block if expression"
- "same-line comment on comptime expression"
- "switch with empty body"
- "line comments in struct initializer"
- "first line comment in struct initializer"
- "doc comments before struct field"
Implement in parser.c:
- error.Value and error{...} in parsePrimaryTypeExpr
- TOKEN_PERIOD_ASTERISK (deref) in parseSuffixOp
- Fix comptime statement to wrap inner expression in comptime node
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "switch cases trailing comma"
- "slice align"
- "add trailing comma to array literal"
- "first thing in file is line comment"
- "line comment after doc comment"
- "bit field alignment"
- "nested switch"
- "float literal with exponent"
- "if-else end of comptime"
- "nested blocks"
- "statements with comment between"
- "statements with empty line between"
- "ptr deref operator and unwrap optional operator"
Fix in parser.c:
- switch_case SubRange stored via addExtra (not inline)
- Switch case body uses parseAssignExpr (not expectExpr)
- TOKEN_PERIOD_ASTERISK for deref in parseSuffixOp
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "array literal with hint"
- "array literal vertical column alignment"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implement parseSwitchExpr in parser.c:
- switch(expr) { cases... } with case items, ranges, else
- switch_case_one and switch_case node types
- Proper scratch management for nested case items
Port tests:
- "switch comment before prong"
- "switch comment after prong"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "if condition has line break but must not wrap"
- "if condition has line break but must not wrap (no fn call comma)"
Implement catch payload (|err|) parsing in parseExprPrecedence.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implement in parser.c:
- parseWhileExpr: while (cond) body, with optional payload,
continue expression, and else clause
- while_simple, while_cont, while AST nodes
Port test "while else err prong with no block".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Split "2nd arg multiline string" to match upstream structure
(separate test for "many args" variant) and add missing
testTransform sub-case.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "'zig fmt: (off|on)' works in the middle of code"
- "'zig fmt: on' indentation is unchanged"
Handle block-terminated expressions (if, while) that don't need
semicolons by checking if previous token was '}'.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Reorder all test blocks in parser_test.zig to match the order
they appear in the upstream zig/lib/std/zig/parser_test.zig.
Tests not in upstream ("Ast header smoke test", "my function")
are placed at the end.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "alignment in anonymous literal"
- "'zig fmt: (off|on)' can be surrounded by arbitrary whitespace"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "line and doc comment following 'zig fmt: off'"
- "doc and line comment following 'zig fmt: off'"
- "line comment following 'zig fmt: on'"
- "doc comment following 'zig fmt: on'"
- "line and doc comment following 'zig fmt: on'"
- "doc and line comment following 'zig fmt: on'"
- "block in slice expression"
- "defer"
Fix defer node data: body goes in lhs (not rhs) to match .node
union variant.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "alignment"
- "C main"
- "return"
- "arrays"
- "blocks"
- "container doc comments"
- "comments before global variables"
- "comments before test decl"
- "decimal float literals with underscore separators"
- "comptime"
- "comptime block in container"
- "comments before var decl in struct"
- "block with same line comment after end brace"
- "comment after empty comment"
- "comment after params"
Fix trailing flag for comptime blocks in parseContainerMembers.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "threadlocal"
- "linksection"
- "addrspace"
Implement full var decl proto with aligned_var_decl, local_var_decl,
and global_var_decl node types for align/addrspace/linksection.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests:
- "pointer-to-one with modifiers"
- "pointer-to-many with modifiers"
- "sentinel pointer with modifiers"
- "c pointer with modifiers"
- "slice with modifiers"
- "sentinel slice with modifiers"
- "allowzero pointer"
Implement in parser.c:
- parsePtrModifiersAndType: shared pointer modifier parsing with
align(expr:expr:expr) bit-range, addrspace, sentinel support
- ptr_type, ptr_type_bit_range nodes with proper OptionalIndex
encoding via global OPT() macro
- Refactor * and [*] pointer type parsing to use shared code
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- "sentinel array literal 1 element"
- "anon literal in array"
- "Unicode code point literal larger than u8"
- "slices with spaces in bounds"
- "C pointers"
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Implement in parser.c:
- defer and errdefer statements with expectBlockExprStatement
- parseAssignExpr for assignment expressions (expr op= expr)
- expectBlockExprStatement: block or assign expr + semicolon
- assignOpTag: map all assignment operator tokens to AST tags
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "multiline string with backslash at end of line"
- "multiline string parameter in fn call with trailing comma"
- "trailing comma on fn call"
- "multi line arguments without last comma"
- "empty block with only comment"
- "trailing commas on struct decl"
- "extra newlines at the end"
- "nested struct literal with one item"
- "if-else with comment before else"
Fix parseSuffixExpr: continue suffix loop after call parsing
instead of returning, enabling method chains like a.b().c().
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "if statement"
- "respect line breaks in if-else"
- "if nested"
- "remove empty lines at start/end of block"
Implement in parser.c:
- parseIfExpr: if/else expression parsing with payloads
- parsePtrPayload, parsePayload: |value| and |*value| handling
- Handle block-terminated expressions without semicolons in
expectVarDeclExprStatement
Fix zigData in parser_test.zig:
- if, while, while_cont use node_and_extra (not node_and_node)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "respect line breaks after infix operators"
- "fn decl with trailing comma"
- "enum decl with no trailing comma"
- "struct literal no trailing comma"
- "2nd arg multiline string"
- "final arg multiline string"
- "function call with multiline argument"
No new parser.c changes needed — all features already implemented.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "comment to disable/enable zig fmt"
- "line comment following 'zig fmt: off'"
- "doc comment following 'zig fmt: off'"
- "alternating 'zig fmt: off' and 'zig fmt: on'"
- "spaces around slice operator"
Fix parsePrimaryTypeExpr: don't reject identifier followed by colon;
the colon may be part of slice sentinel syntax, not a label.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "trailing comma in fn parameter list" (all combinations)
- "enum literal inside array literal"
- "builtin call with trailing comma"
Implement in parser.c:
- parseParamDeclList: full parameter parsing with names, comptime,
noalias, doc comments, varargs
- parseFnProto: fn_proto_multi, fn_proto_one, fn_proto with
align/addrspace/section/callconv
- parseSuffixExpr: function call with arguments
- parsePrimaryExpr: return, comptime, nosuspend, resume expressions
- parseAddrSpace, parseLinkSection, parseCallconv: full parsing
- Use OPT() macro for OptionalIndex encoding in extra data
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "slices" (open, closed, sentinel-terminated)
- "tagged union with enum values"
- "tagged union enum tag last token"
Implement in parser.c:
- Slice expressions in parseSuffixOp: slice_open, slice,
slice_sentinel
- Handle OptionalIndex encoding for absent slice end expr
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "struct literal 2/3 element" (with and without comma)
- "anon list literal 1/2/3 element" (with and without comma)
- "array literal 0/1/2/3 element" (with and without comma)
All 17 new tests pass without parser changes — the init list
implementation from the previous commit handles all cases.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "allow empty line before comment at start of block"
- "comptime struct field"
- "break from block"
- "grouped expressions (parentheses)"
- "array types last token"
Fix bugs in parser.c:
- parseBreakLabel: use null_token instead of null_node
- test decl: use null_token for unnamed tests
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "container declaration, one item, multi line trailing comma"
- "container declaration, no trailing comma on separate line"
- "container declaration, line break, no trailing comma"
- "container declaration, transform trailing comma"
- "container declaration, comment, add trailing comma"
- "container declaration, multiline string, add trailing comma"
- "container declaration, doc comment on member, add trailing comma"
- "remove empty lines at start/end of container decl"
Implement in parser.c:
- Test declarations in parseContainerMembers
- Comptime block/var statements in expectStatement
- Variable declaration with initializer in expectVarDeclExprStatement
- Regular assignment expressions
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "multiline string mixed with comments"
- "empty file"
- "file ends in comment"
- "file ends in multi line comment"
- "file ends in comment after var decl"
- "top-level fields"
- "container declaration, single line"
Implement in parser.c:
- parseSuffixOp: array access, field access, deref, unwrap optional
- Slice/array type parsing in parseTypeExpr
- Multiline string literal parsing
Fix zigData mapping in parser_test.zig:
- optional_type uses .node (not .opt_node)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port tests from upstream parser_test.zig:
- "respect line breaks before functions"
- "simple top level comptime block"
- "two spaced line comments before decl"
- "respect line breaks after var declarations"
Implement in parser.c:
- parseSuffixOp: array access (a[i]), field access (a.b),
deref (a.*), unwrap optional (a.?)
- Multiline string literal parsing
- Slice types ([]T, [:s]T) and array types ([N]T, [N:s]T)
- Fix comptime block main_token in parseContainerMembers
Fix zigData mapping in parser_test.zig:
- field_access, unwrap_optional use node_and_token (not node_and_node)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Port "zig fmt: respect line breaks in struct field value declaration"
test from upstream parser_test.zig.
Implement in parser.c:
- Slice types ([]T, [:s]T) in parseTypeExpr
- Array types ([N]T, [N:s]T) in parseTypeExpr
- Multiline string literals in parsePrimaryTypeExpr
- Add comments explaining why const/volatile/allowzero pointer
modifiers are consumed (not stored in AST; renderer re-derives
them from token positions)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Now it's based on calling fillMore rather than an illegal aliased stream
into the Reader buffer.
This commit also includes a disambiguation block inspired by #25162. If
`StreamTooLong` was added to `RebaseError` then this logic could be
replaced by removing the exit condition from the while loop. That error
code would represent when `buffer` capacity is too small for an
operation, replacing the current use of asserts.
Fix `takeDelimiter` and `takeDelimiterExclusive` tossing too many bytes
(#25132)
Also add/improve test coverage for all delimiter and sentinel methods,
update usages of `takeDelimiterExclusive` to not rely on the fixed bug,
tweak a handful of doc comments, and slightly simplify some logic.
I have not fixed#24950 in this commit because I am a little less
certain about the appropriate solution there.
Resolves: #25132
Co-authored-by: Andrew Kelley <andrew@ziglang.org>
* File.Writer.seekBy passed wrong offset to setPosAdjustingBuffer.
* File.Writer.sendFile incorrectly used non-logical position.
Related to 1d764c1fdf04829cec5974d82cec901825a80e49
Test case provided by:
Co-authored-by: Kendall Condon <goon.pri.low@gmail.com>
Previously, the logic in peekDelimiterInclusive (when the delimiter was not found in the existing buffer) used the `n` returned from `r.vtable.stream` as the length of the slice to check, but it's valid for `vtable.stream` implementations to return 0 if they wrote to the buffer instead of `w`. In that scenario, the `indexOfScalarPos` would be given a 0-length slice so it would never be able to find the delimiter.
This commit changes the logic to assume that `r.vtable.stream` can both:
- return 0, and
- modify seek/end (i.e. it's also valid for a `vtable.stream` implementation to rebase)
Also introduces `std.testing.ReaderIndirect` which helps in being able to test against Reader implementations that return 0 from `stream`/`readVec`
Fixes#25428
Before, this had a subtle ordering bug where duplicate
deps that are specified as both lazy and eager in different
parts of the dependency tree end up not getting fetched
depending on the ordering. I modified it to resubmit lazy
deps that were promoted to eager for fetching so that it will
be around for the builds that expect it to be eager downstream
of this.
--debug-rt previously would make rt libs match the root module. Now they
are always debug when --debug-rt is passed. This includes compiler-rt,
fuzzer lib, and others.
Before https://github.com/ziglang/zig/pull/18160, error tracing defaulted to true in ReleaseSafe, but that is no longer the case. These option descriptions were never updating accordingly.
* Add missing functions like ISDIR() or ISREG(). This is required to
build the zig compiler
* Use octal notation for the S_ constants. This is how it is done for
".freebsd" and it is also the notation used by DragonFly in
"sys/stat.h"
* Reorder S_ constants in the same order as ".freebsd" does. Again, this
follows the ordering within "sys/stat.h"
Clang fails to compile the CBE translation of this code ("non-ASM
statement in naked function"). Similar to the implementations of
`restore_rt` on x86 and ARM, when the CBE is in use, this commit employs
alternative inline assembly that avoids using non-immediate input
operands.
Fixes#25209.
On PowerPC, some registers are both inputs to syscalls and clobbered by
them. An example is r0, which initially contains the syscall number, but
may be overwritten during execution of the syscall.
musl and glibc use a `+` (read-write) constraint to indicate this, which
isn't supported in Zig. The current implementation of PowerPC syscalls
in the Zig standard library instead lists these registers as both inputs
and clobbers, but this results in the C backend generating code that is
invalid for at least some C compilers, like GCC, which doesn't support
the specifying the same register as both an input and a clobber.
This PR changes the PowerPC syscall functions to list such registers as
inputs and outputs rather than inputs and clobbers. Thanks to jacobly0
who pointed out that it's possible to have multiple outputs; I had
gotten the wrong idea from the documentation.
In a library, the two `builtin.link_libc` and `builtin.output_mode ==
.Exe` checks could both be false. Thus, you would get a compile error
even if you specified an `env_map` at runtime. This change turns the
compile error into a runtime panic and updates the documentation to
reflect the runtime requirement.
If the compiler happens to pick `ret = r0`, then this will assemble to
`ag r0, 0` which is obviously not what we want. Using `a` instead of `r` will
ensure that we get an appropriate address register, i.e. `r1` through `r15`.
Re-enable pie_linux for s390x-linux which was disabled in
ed7ff0b693037078f451a7c6c1124611060f4892.
If `r.end` is updated in the `stream` implementation, then it's possible that `r.end += ...` will behave unexpectedly. What seems to happen is that it reverts back to its value before the function call and then the increment happens. Here's a reproduction:
```zig
test "fill when stream modifies `end` and returns 0" {
var buf: [3]u8 = undefined;
var zero_reader = infiniteZeroes(&buf);
_ = try zero_reader.fill(1);
try std.testing.expectEqual(buf.len, zero_reader.end);
}
pub fn infiniteZeroes(buf: []u8) std.Io.Reader {
return .{
.vtable = &.{
.stream = stream,
},
.buffer = buf,
.end = 0,
.seek = 0,
};
}
fn stream(r: *std.Io.Reader, _: *std.Io.Writer, _: std.Io.Limit) std.Io.Reader.StreamError!usize {
@memset(r.buffer[r.seek..], 0);
r.end = r.buffer.len;
return 0;
}
```
When `fill` is called, it will call into `vtable.readVec` which in this case is `defaultReadVec`. In `defaultReadVec`:
- Before the `r.end += r.vtable.stream` line, `r.end` will be 0
- In `r.vtable.stream`, `r.end` is modified to 3 and it returns 0
- After the `r.end += r.vtable.stream` line, `r.end` will be 0 instead of the expected 3
Separating the `r.end += stream();` into two lines fixes the problem (and this separation is done elsewhere in `Reader` so it seems possible that this class of bug has been encountered before).
Potentially related issues:
- https://github.com/ziglang/zig/issues/4021
- https://github.com/ziglang/zig/issues/12064
When building on macOS Tahoe, binaries were getting duplicate LC_RPATH
load commands which caused dyld to refuse to run them with a
"duplicate LC_RPATH" error that has become a hard error.
The duplicates occurred when library directories were being added
to rpath_list twice:
- from lib_directories
- from native system paths detection which includes the same dirs
I’ve been typing `zig fmt **/.zig` for a long time, until I discovered
that the argument can actually be a directory.
Mention this feature explicitly in the help message.
* std.sort.pdq: fix out-of-bounds access in partialInsertionSort
When sorting a sub-range that doesn't start at index 0, the
partialInsertionSort function could access indices below the range
start. The loop condition `while (j >= 1)` didn't respect the
arbitrary range boundaries [a, b).
This changes the condition to `while (j > a)` to ensure indices
never go below the range start, fixing the issue where pdqContext
would access out-of-bounds indices.
Fixes#25250
This bug was manifesting for user as a nasty link error because they
were calling their application's main entry point as a coerced function,
which essentially broke reference tracking for the entire ZCU, causing
exported symbols to silently not get exported.
I've been a little unsure about how coerced functions should interact
with the unit graph before, but the solution is actually really obvious
now: they shouldn't! `Sema` is now responsible for unwrapping
possibly-coerced functions *before* queuing analysis or marking unit
references. This makes the reference graph optimal (there are no
redundant edges representing coerced versions of the same function) and
simplifies logic elsewhere at the expense of just a few lines in Sema.
FreeBSD normally provides this symbol in libc, but it's in the
FBSDprivate_1.0 namespace, so it doesn't get included in our abilists file.
Fortunately, the implementation is identical for Linux and FreeBSD, so we can
just provide it in compiler-rt.
It's interesting to note that the same is not true for NetBSD where the
implementation is more complex to support older Arm versions. But we do include
the symbol in our abilists file for NetBSD libc, so that's fine.
closes#25215
Call start/endBlock before/after `parseBlockInfoBlock` in order to not
use the current block context, which is wrong and leads to e.g. incorrect
abbrevlen being used.
Before this commit, -Mfoo=bar=baz would be incorrectly split into mod_name: `foo` and root_src_orig: `bar`
After this commit, -Mfoo=bar=baz will be correctly split into mod_name: `foo` and root_src_orig: `bar=baz`
Closes#25059
* update the MSG struct with the correct values for openbsd
* add comment with link to sys/sys/socket.h
---------
Co-authored-by: Brandon Mercer <bmercer@eutonian.com>
Note the previous "28" here for openbsd was some kind of copy
error long ago. That's the value of KERN.SOMAXCONN, which is an
entirely different thing.
The TLS 1.2 implementation was incorrectly hardcoded to always send the
secp256r1 public key in the client key exchange message, regardless of
which elliptic curve the server actually negotiated.
This caused TLS handshake failures with servers that preferred other curves
like X25519.
This fix:
- Tracks the negotiated named group from the server key exchange message
- Dynamically selects the correct public key (X25519, secp256r1, or
secp384r1) based on what the server negotiated
- Properly constructs the client key exchange message with the
appropriate key size for each curve type
Fixes TLS 1.2 connections to servers like ziglang.freetls.fastly.net
that prefer X25519 over secp256r1.
Fixes#23993
Previously, if multiple build processes tried to create the same args file, there was a race condition with the use of the non-atomic `writeFile` function which could cause a spawned compiler to read an empty or incomplete args file. This commit avoids the race condition by first writing to a temporary file with a random path and renaming it to the desired path.
This make `fs.Dir.access` has compatibility like the zig version before.
With this change the `zig build --search-prefix` command would work again like
the zig 0.14 version when used on Ubuntu22.04, kernel version 5.4.
* add macos handling for totalSystemMemory
* fix return type cast for .freebsd in totalSystemMemory
* add handling for the whole Darwin family in totalSystemMemory
Without this change, the docs are formatted s.t. the text "Edge case rules ordered by precedence:" is appended onto the prior line of text "Underflow: Absolute value of result smaller than 1", instead of getting its own line.
It is important we copy the left-overs in the message *before* we XOR
it into the ciphertext, because if we're encrypting in-place (i.e., m ==
c), we will manipulate the message that will be used for tag generation.
This will generate faulty tags when message length doesn't conform with
16 byte blocks.
* extend std.Io.Reader.peekDelimiterExclusive test to repeat successful end-of-stream path (fails)
* fix std.Io.Reader.peekDelimiterExclusive to not advance seek position in successful end-of-stream path
When an error response was encountered, such as 404 not found, the body
wasn't discarded, leading to the string "404 not found" being
incorrectly interpreted as the next request's response.
closes#24732
It doesn't really make sense for `target_util.canBuildLibCompilerRt`
(and its ubsan-rt friend) to take in `use_llvm`, because the caller
doesn't control that: they're just going to queue a sub-compilation for
the runtime. The only exception to that is the ZCU strategy, where we
effectively embed `_ = @import("compiler_rt")` into the Zig compilation:
there, the question does matter. Rather than trying to do multiple weird
calls to model this, just have `canBuildLibCompilerRt` return not just a
boolean, but also differentiate the self-hosted backend being capable of
building the library vs only LLVM being capable. Logic in `Compilation`
uses that difference to decide whether to use the ZCU strategy, and also
to disable the library if the compiler does not support LLVM and it is
required.
Also, remove a redundant check later on, when actually queuing jobs.
We've already checked that we can build `compiler_rt`, and
`compiler_rt_strat` is set accordingly. I'm guessing this was there to
work around a bug I saw in the old strategy assignment, where support
was ignored in some cases.
Resolves: #24623
they seem to be always `null` even when accessed through extern key so we have no way to tell whether they have natural alignment or not to decorate. And the reason we don't always decorate them is because some environments might be too dumb and crash for this.
This is theoretically a bugfix as well, since it enforces the correct
limit on the first write after writing the header. This theoretical bug
hasn't been hit in practice though as far as I know.
Writer.sendFileAll() asserts non-zero buffer capacity in the case that
the fallback is hit. It also requires the caller to flush. The buffer
may be bypassed as an optimization but this is not a guarantee.
Also improve the Writer documentation and add an earlier assert on
buffer capacity in sendFileAll().
On macOS, when using the LLVM backend, the output binary retains a
reference to this object file's debug info (as opposed to self-hosted
backends which instead emit a dSYM bundle). As such, we need to retain
this object file in such cases. This object does unfortunately "leak",
in that it won't be reused and will just sit in the cache forever (or
until GC'd in the future). But that's no worse than the cache behavior
prior to the rework that caused this, and it will become less of a
problem over time as the self-hosted backend gains usability for debug
builds and eventually becomes the default.
Resolves: #24369
* std.Io.Reader: fix confused semantics of rebase. Before it was
ambiguous whether it was supposed to be based on end or seek. Now it
is clearly based on seek, with an added assertion for clarity.
* std.crypto.tls.Client: fix panic due to not enough buffer size
available. Also, avoid unnecessary rebasing.
* std.http.Reader: introduce max_head_len to limit HTTP header length.
This prevents crash in underlying reader which may require a minimum
buffer length.
* std.http.Client: choose better buffer sizes for streams and TLS
client. Crucially, the buffer shared by HTTP reader and TLS client
needs to be big enough for all http headers *and* the max TLS record
size. Bump HTTP header size default from 4K to 8K.
fixes#24872
I have noticed however that there are still fetch problems
Previously, index out-of-bounds could occur when copying match_length bytes while decoding whatever sequence happened to overflow `dest`. Now, each sequence checks that there is enough room for the full sequence_length (literal_length + match_length) before doing any copying.
Fixes the failing inputs found here: https://github.com/ziglang/zig/issues/24817#issuecomment-3192927715
As well as the exact byte count, include a human-readable value so it's
clearer what the error is actually telling you. The exact byte count
might not be worth keeping, but I decided I would in case it's useful in
any scenario.
In the best case, this is redundant work, because we aren't actually
going to emit a working binary this update. In the worst case, it causes
bugs because the linker may not have *seen* the thing being exported due
to the compile errors.
Resolves: #24417
* std.Io.Reader: appendRemaining no longer supports alignment and has
different rules about how exceeding limit. Fixed bug where it would
return success instead of error.StreamTooLong like it was supposed to.
* std.Io.Reader: simplify appendRemaining and appendRemainingUnlimited
to be implemented based on std.Io.Writer.Allocating
* std.Io.Writer: introduce unreachableRebase
* std.Io.Writer: remove minimum_unused_capacity from Allocating. maybe
that flexibility could have been handy, but let's see if anyone
actually needs it. The field is redundant with the superlinear growth
of ArrayList capacity.
* std.Io.Writer: growingRebase also ensures total capacity on the
preserve parameter, making it no longer necessary to do
ensureTotalCapacity at the usage site of decompression streams.
* std.compress.flate.Decompress: fix rebase not taking into account seek
* std.compress.zstd.Decompress: split into "direct" and "indirect" usage
patterns depending on whether a buffer is provided to init, matching
how flate works. Remove some overzealous asserts that prevented buffer
expansion from within rebase implementation.
* std.zig: fix readSourceFileToAlloc returning an overaligned slice
which was difficult to free correctly.
fixes#24608
The previous code assumed that `initFrame` during the `new_frame` state would always result in the `in_frame` state, but that's not always the case. `initFrame` can also result in the `skippable_frame` state, which would lead to access of union field 'in_frame' while field 'skipping_frame' is active.
Now, the switch is re-entered with the updated state so either case is handled appropriately.
Fixes the crashes from https://github.com/ziglang/zig/issues/24817
Previously, the "allow EndOfStream" part of this logic was too permissive. If there are a few dangling bytes at the end of the stream, that should be treated as a bad magic number. The only case where EndOfStream is allowed is when the stream is truly at the end, with exactly zero bytes available.
Validate wildcard certificates as specified in RFC 6125.
In particular, `*.example.com` should match `foo.example.com` but
NOT `bar.foo.example.com` as it previously did.
The Lua headers are needed because, yes, NetBSD has a kernel module for Lua
support. soundcard.h is technically a system header but is installed by
libossaudio and so was missed previously.
This also removes some riscv headers that shouldn't have been added because
NetBSD does not yet officially support the riscv32/riscv64 ports.
Closes#24737.
Newer 32-bit Linux targets like 32-bit RISC-V only use the 64-bit
time ABI, with these syscalls having `time64` as their suffix.
This is a stopgap solution in favor of a full audit of `std.os.linux` to
prepare for #4726.
See also #21440 for prior art.
The generic syscall table has different names for syscalls that take a
timespec64 on 32-bit targets, in that it adds the `_time64` suffix.
Similarly, the `_time32` suffix has been removed.
I'm not sure if the existing logic for determining the proper timespec
struct to use was subtly broken, but it should be a good chance to
finish #4726 - we only have 12 years after all...
As for the changes since 6.11..6.16:
6.11:
- x86_64 gets `uretprobe`, a syscall to speed up returning BPF probes.
- Hexagon gets `clone3`, but don't be fooled: it just returns ENOSYS.
6.13:
- The `*xattr` family of syscalls have been enhanced with new `*xattrat`
versions, similar to the other file-based `at` calls.
6.15:
- Atomically create a detached mount tree and set mount options on it.
Finally, this commit also adds the syscall numbers for OpenRISC and maps
it to the `or1k` cpu.
Changes by Arnd Bergmann have migrated all supported architectures to
use a table for their syscall lists. This removes the need to use the
C pre-processor and simplifies the logic considerably.
All currently supported architectures have been added, with the ones Zig
doesn't support being commented out. Speaking of; OpenRisc has been
enabled for generation.
A little clunky -- maybe the frontend should give an answer here -- but
this patch makes sense with the surrounding logic just to fix the crash.
Resolves: #24265
`limit` in chunkedSendFile applies only to the file, not the entire
chunk. `limit` in sendFileHeader does not include the header.
Additionally adds a comment to clarify what `limit` applies to in
sendFileHeader and fixed a small bug in it (`drain` is able to return
less then `header.len`).
The LLVM backend lowers unions where all fields are zero-bit as
equivalent to their backing enum, and expects them to have the same
by-ref-ness in at least one place in the backend, probably more.
Resolves: #23577
This "get" is useless noise and was copied from FixedBufferWriter.
Since this API has not yet landed in a release, now is a good time
to make the breaking change to fix this.
`Aegis256XGeneric` behaves differently than `Aegis128XGeneric` in that
it currently encrypts associated data instead of just absorbing it. Even
though the end result is the same, there's no point in encrypting and
copying the ad into a buffer that gets overwritten anyway. This fix
makes `Aegis256XGeneric` behave the same as `Aegis128XGeneric`.
According to https://apilevels.com, 88.5% of Android users are on 29+. Older API
levels require libc as of https://github.com/ziglang/zig/pull/24629, which has
confused some users. Seems reasonable to bump the default so most people won't
be confused by this.
This commit expands on the foundations laid by https://github.com/ziglang/zig/pull/23177
and moves even more `Sema`-only functionality from `Value`
to `Sema.arith`. Specifically all shift and bitwise operations,
`@truncate`, `@bitReverse` and `@byteSwap` have been moved and
adapted to the new rules around `undefined`.
Especially the comptime shift operations have been basically
rewritten, fixing many open issues in the process.
New rules applied to operators:
* `<<`, `@shlExact`, `@shlWithOverflow`, `>>`, `@shrExact`: compile error if any operand is undef
* `<<|`, `~`, `^`, `@truncate`, `@bitReverse`, `@byteSwap`: return undef if any operand is undef
* `&`, `|`: Return undef if both operands are undef, turn undef into actual `0xAA` bytes otherwise
Additionally this commit canonicalizes the representation of
aggregates with all-undefined members in the `InternPool` by
disallowing them and enforcing the usage of a single typed
`undef` value instead. This reduces the amount of edge cases
and fixes a bunch of bugs related to partially undefined vecs.
List of operations directly affected by this patch:
* `<<`, `<<|`, `@shlExact`, `@shlWithOverflow`
* `>>`, `@shrExact`
* `&`, `|`, `~`, `^` and their atomic rmw + reduce pendants
* `@truncate`, `@bitReverse`, `@byteSwap`
This algorithm is non-trivial and makes sense for any data structure
that acts as an array list, so I thought it would make sense as a
method.
I have a real world case for this in a music player application
(deleting queue items).
Adds the method to:
* ArrayList
* ArrayHashMap
* MultiArrayList
This experimental target was never fully completed. The operating system
is not that interesting or popular anyway, and the maintainer is no
longer around.
Not worth the maintenance burden. This code can be resurrected later if
it is worth it. In such case it will be subject to greater scrutiny.
This is one way of partially addressing https://github.com/ziglang/zig/issues/24767
- These functions are unused
- These functions are untested
- These functions are broken
+ The same dangling pointer bug from 6219c015d8 exists in `writePreserve`
+ The order of the bytes preserved in relation to the `bytes` being written can differ depending on unused buffer capacity at the time of the call and the drain implementation.
If there ends up being a need for these functions, they can be fixed and added back.
This commit re-enables the --webui functionality on windows, with the caveat that rebuild functionality is still disabled (due to deadlocks caused by reading to / writing from the same non-overlapped socket on multiple threads). I updated the UI to be aware of this, and hide the `Rebuild` button.
http.Server: Remove incorrect advance() call. This was causing browsers to disconnect the websocket, as we were sending undefined bytes.
build.WebServer: Re-enable on windows, but disable functionality that requires receiving messages from the client
build-web: Show total times in tables
The "completed" count in the "Semantic Analysis" progress node had
regressed since 0.14.0: the number got crazy big very fast, even on
simple cases. For instance, an empty `pub fn main` got to ~59,000 where
on 0.14 it only reached ~4,000. This was happening because I was
unintentionally introducing a node every time type resolution was
*requested*, even if (as is usually the case) it turned out to already
be done. The fix is simply to start the progress node a little later,
once we know we are actually doing semantic analysis. This brings the
number for that empty test case down to ~5,000, which makes perfect
sense. It won't exactly match 0.14, because the standard library has
changed, and also because the compiler's progress output does have some
*intentional* changes.
The functions `Compilation.create` and `Compilation.update` previously
returned inferred error sets, which had built up a lot of crap over
time. This meant that certain error conditions -- particularly certain
filesystem errors -- were not being reported properly (at best the CLI
would just print the error name). This was also a problem in
sub-compilations, where at times only the error name -- which might just
be something like `LinkFailed` -- would be visible.
This commit makes the error handling here more disciplined by
introducing concrete error sets to these functions (and a few more as a
consequence). These error sets are small: errors in `update` are almost
all reported via compile errors, and errors in `create` are reported
through a new `Compilation.CreateDiagnostic` type, a tagged union of
possible error cases. This allows for better error reporting.
Sub-compilations also report errors more correctly in several cases,
leading to more informative errors in the case of compiler bugs.
Also fixes some race conditions in library building by replacing calls
to `setMiscFailure` with calls to `lockAndSetMiscFailure`. Compilation
of libraries such as libc happens on the thread pool, so the logic must
synchronize its access to shared `Compilation` state.
While underlying writer is Allocating writer buffer can grow in
vtable.drain call. We should not hold pointer to the buffer before that
call and use it after.
This remembers positions instead of holding reference.
Running tar.pipeToFileSystem compressed_mingw_includes.tar file from #24732
finishes in infinite loop calling defaultReadVec with:
r.seek = 1024
r.end = 1024
r.buffer.len = 1024
first.len = 512
that combination calls vtable.stream with 0 capacity writer and loops
forever.
Comment is to use whichever has larger capacity, and this fix reflects that.
This way, if the ci-riscv64-linux label was added to a PR previously, removing
it will cause the concurrency group of the workflow to cancel the runs triggered
by the label being added.
It's a bit counter-intuitive, but there are two streams here: the
implementation here, and the connected output stream.
When we say "unflushed" we mean don't flush the connected output stream
because that's managed externally. But an "end" operation should always
flush the implementation stream.
Previously, when extracting a ZIP file, isBadFilename(), which is
designed to reject ../ patterns to prevent directory traversal, was
called before normalizing backslashes to forward slashes.
This allowed path traversal sequences like ..\\..\\..\\etc\\passwd
which pass validation but are then converted to ../../../etc/passwd
for file extraction.
Don't see why byte returned from specialPeek needs to be shifted by
remaining_needed_bits.
I believe that decision in specialPeek should be done on the number of
the remaining bits not of the content of that bits.
Some test result are changed, but they are now consistent with the
original state as found in:
5f790464b0/lib/std/compress/flate/Decompress.zig
Changing Bits from usize to u32 or u64 now returns same results.
* flate: simplify peekBitsEnding
`peekBits` returns at most asked number of bits. Fails with EndOfStream
when there are no available bits. If there are less bits available than
asked still returns that available bits.
Hopefully this change better reflects intention. On first input stream
peek error we break the loop.
If both are used, 'else' handles named members and '_' handles
unnamed members. In this case the 'else' prong will be unrolled
to an explicit case containing all remaining named values.
Mainly affects ZIR representation of switch_block[_ref]
and special prong (detection) logic for switch.
Adds a new SpecialProng tag 'absorbing_under' that allows
specifying additional explicit tags in a '_' prong which
are respected when checking that every value is handled
during semantic analysis but are not transformed into AIR
and instead 'absorbed' by the '_' branch.
In trying to reproduce the race in #24380, my system tripped over the stat
"blocks" field changing in this test. The value was almost always 8
(effectively 4k) or very infrequently 0 (I saw the 0 from both `fstat` and
`fstatat`). I believe the underlying filesystem is free to asynchronously
change this value. For example, if it migrates a file between some
"inline" or maybe journal storage, and actual on-disk blocks. So it seems
plausible that its allowed to change between stat calls.
Breaking up the struct comparison this way means we also don't compare any
of the padding or "reserved" fields, too. And we can narrow down the
s390x-linux work-around.
The `atime()`, etc wrappers here expect to create a `std.linux.timespec`
(defined in `linux.zig` to have `isize` fields), so the u32 causes errors:
error: expected type 'isize', found 'u32'
.nsec = self.atim_nsec,
Make the nsec fields signed for consistency with all the other structs,
with and with `std.linux.timespec`.
Also looks like the comment on `__pad1` was copied from `__pad0`, but it
only applies to `__pad0`.
If an error occured which prevented a prelink task from being queued,
then `pending_prelink_tasks` would never be decremented, which could
cause deadlocks in some cases. So, instead of calculating ahead of time
the number of prelink tasks to expect, we use a simpler strategy which
is much like a wait group: we add 1 to a value when we spawn a worker,
and in the worker function, `defer` decrementing the value. The initial
value is 1, and there's a decrement after all of the workers are
spawned, so once it hits 0, prelink is done (be it with a failure or a
success).
This reverts commit b461d07a54.
After some discussion in the team, we've decided that this is too disruptive,
especially because the linker errors are less than helpful. That's a fixable
problem, so we might reconsider this in the future, but revert it for now.
This use case is handled by ArrayListUnmanaged via the "...Bounded"
method variants, and it's more optimal to share machine code, versus
generating multiple versions of each function for differing array
lengths.
This was a regression in #24588.
I have verified that this patch works by confirming that with the
downstream patches SerenityOS apply to the Zig source tree (sans the one
working around this regression), I can build the build runner for
SerenityOS.
Resolves: #24682
This option is similar to `--debug-target` in letting us override
details of the build runner target when debugging the build system.
While `--debug-target` lets us override the target query, this option
lets us override the libc installation. This option is only usable in a
compiler built with debug extensions.
I am using this to (try to) test the build runner targeting SerenityOS.
This reverts commit fa445d86a1.
Narrator: It did, in fact, make a difference.
For whatever reason, building LLVM against spacemit_x60 or baseline makes no
noticeable difference in terms of performance, but building the Zig compiler
against spacemit_x60 does. Also, the miscompilation that was causing
riscv64-linux-debug to fail was in the LLVM libraries, not in the Zig compiler,
so we may as well take the win here.
GitHub is apparently very bad at arithmetic and so will cancel jobs that pass
the 5 hours mark, even if they're nowhere near the 6 hours timeout. So add an
hour to assist GitHub in this very difficult task.
The support was already there but somebody forgot to allow to use the
calling conventions spirv_fragment and spirv_vertex when having opengl
as os tag.
Previously, this only applied when using `-fincremental --watch`, but
`--webui` makes the build runner stay alive just like `--watch` does, so
the same logic applies here. Without this, attempting to perform
incremental updates with `--webui` performs full rebuilds. (I did test
that before merging the PR, but at that time I was passing `--watch`
too -- which has since been disallowed -- so I missed that it doesn't
work as expected without that option!)
This commit replaces the "fuzzer" UI, previously accessed with the
`--fuzz` and `--port` flags, with a more interesting web UI which allows
more interactions with the Zig build system. Most notably, it allows
accessing the data emitted by a new "time report" system, which allows
users to see which parts of Zig programs take the longest to compile.
The option to expose the web UI is `--webui`. By default, it will listen
on `[::1]` on a random port, but any IPv6 or IPv4 address can be
specified with e.g. `--webui=[::1]:8000` or `--webui=127.0.0.1:8000`.
The options `--fuzz` and `--time-report` both imply `--webui` if not
given. Currently, `--webui` is incompatible with `--watch`; specifying
both will cause `zig build` to exit with a fatal error.
When the web UI is enabled, the build runner spawns the web server as
soon as the configure phase completes. The frontend code consists of one
HTML file, one JavaScript file, two CSS files, and a few Zig source
files which are built into a WASM blob on-demand -- this is all very
similar to the old fuzzer UI. Also inherited from the fuzzer UI is that
the build system communicates with web clients over a WebSocket
connection.
When the build finishes, if `--webui` was passed (i.e. if the web server
is running), the build runner does not terminate; it continues running
to serve web requests, allowing interactive control of the build system.
In the web interface is an overall "status" indicating whether a build
is currently running, and also a list of all steps in this build. There
are visual indicators (colors and spinners) for in-progress, succeeded,
and failed steps. There is a "Rebuild" button which will cause the build
system to reset the state of every step (note that this does not affect
caching) and evaluate the step graph again.
If `--time-report` is passed to `zig build`, a new section of the
interface becomes visible, which associates every build step with a
"time report". For most steps, this is just a simple "time taken" value.
However, for `Compile` steps, the compiler communicates with the build
system to provide it with much more interesting information: time taken
for various pipeline phases, with a per-declaration and per-file
breakdown, sorted by slowest declarations/files first. This feature is
still in its early stages: the data can be a little tricky to
understand, and there is no way to, for instance, sort by different
properties, or filter to certain files. However, it has already given us
some interesting statistics, and can be useful for spotting, for
instance, particularly complex and slow compile-time logic.
Additionally, if a compilation uses LLVM, its time report includes the
"LLVM pass timing" information, which was previously accessible with the
(now removed) `-ftime-report` compiler flag.
To make time reports more useful, ZIR and compilation caches are ignored
by the Zig compiler when they are enabled -- in other words, `Compile`
steps *always* run, even if their result should be cached. This means
that the flag can be used to analyze a project's compile time without
having to repeatedly clear cache directory, for instance. However, when
using `-fincremental`, updates other than the first will only show you
the statistics for what changed on that particular update. Notably, this
gives us a fairly nice way to see exactly which declarations were
re-analyzed by an incremental update.
If `--fuzz` is passed to `zig build`, another section of the web
interface becomes visible, this time exposing the fuzzer. This is quite
similar to the fuzzer UI this commit replaces, with only a few cosmetic
tweaks. The interface is closer than before to supporting multiple fuzz
steps at a time (in line with the overall strategy for this build UI,
the goal will be for all of the fuzz steps to be accessible in the same
interface), but still doesn't actually support it. The fuzzer UI looks
quite different under the hood: as a result, various bugs are fixed,
although other bugs remain. For instance, viewing the source code of any
file other than the root of the main module is completely broken (as on
master) due to some bogus file-to-module assignment logic in the fuzzer
UI.
Implementation notes:
* The `lib/build-web/` directory holds the client side of the web UI.
* The general server logic is in `std.Build.WebServer`.
* Fuzzing-specific logic is in `std.Build.Fuzz`.
* `std.Build.abi` is the new home of `std.Build.Fuzz.abi`, since it now
relates to the build system web UI in general.
* The build runner now has an **actual** general-purpose allocator,
because thanks to `--watch` and `--webui`, the process can be
arbitrarily long-lived. The gpa is `std.heap.DebugAllocator`, but the
arena remains backed by `std.heap.page_allocator` for efficiency. I
fixed several crashes caused by conflation of `gpa` and `arena` in the
build runner and `std.Build`, but there may still be some I have
missed.
* The I/O logic in `std.Build.WebServer` is pretty gnarly; there are a
*lot* of threads involved. I anticipate this situation improving
significantly once the `std.Io` interface (with concurrency support)
is introduced.
if I remove the last input byte from "don't read past deflate stream's
end" (on master branch), the test fails with error.EndOfStream. what,
then, is it supposed to be testing?
It's quite silly to have this override which nonetheless makes
assumptions about the input type. Encode the actual complexity of the
sort.
Also, simplify the sorting logic, and fix a bug (grab min and max
*after* the sort, not *before*!)
fsync blocks until the contents have been actually written to disk,
which would be useful if we didn't want to report success until having
achieved durability. But the OS will ensure coherency; i.e. if one
process writes stuff without calling fsync, then another process reads
that stuff, the writes will be seen even if they didn't get flushed to
disk yet.
Since this code deals with ephemeral cache data, it's not worth trying
to achieve this kind of durability guarantee. This is consistent with
all the other tooling on the system.
Certainly, if we wanted to change our stance on this, it would not be
something that affects only the git fetching logic.
Unlike all other platforms where RDONLY is 0 it does not work as a
default for the O flags on serenity - various syscalls other than
'open', e.g. 'pipe', return EINVAL if unexpected bits are set in the
flags.
when a Run step that captures stderr fails, no output from it is visible
by the user and, since the step failed, any downstream step that would
process the captured stream will not run, making it impossible for the
user to see the stderr output from the failed process invocation, which
makes for a frustrating puzzle when this happens in CI.
* Sema: remove redundant comptime-known initializer tracking
This logic predates certain Sema enhancements whose behavior it
essentially tries to emulate in one specific case in a problematic way.
In particular, this logic handled initializing comptime-known `const`s
through RLS, which was reworked a few years back in 644041b to not rely
on this logic, and catching runtime fields in comptime-only
initializers, which has since been *correctly* fixed with better checks
in `Sema.storePtr2`. That made the highly complex logic in
`validateStructInit`, `validateUnionInit`, and `zirValidatePtrArrayInit`
entirely redundant. Worse, it was also causing some tracked bugs, as
well as a bug which I have identified and fixed in this PR (a
corresponding behavior test is added).
This commit simplifies union initialization by bringing the runtime
logic more in line with the comptime logic: the tag is now always
populated by `Sema.unionFieldPtr` based on `initializing`, where this
previously happened only in the comptime case (with `validateUnionInit`
instead handling it in the runtime case). Notably, this means that
backends are now able to consider getting a pointer to an inactive union
field as Illegal Behavior, because the `set_union_tag` instruction now
appears *before* the `struct_field_ptr` instruction as you would
probably expect it to.
Resolves: #24520Resolves: #24595
* Sema: fix comptime-known union initialization with OPV field
The previous commit uncovered this existing OPV bug by triggering this
logic more frequently.
* Sema: remove dead logic
This is redundant because `storePtr2` will coerce to the return type
which (in `Sema.coerceInMemoryAllowedErrorSets`) will add errors to the
current function's IES if necessary.
* Sema: don't rely on Liveness
We're currently experimenting with backends which effectively do their
own liveness analysis, so this old trick of mine isn't necessarily valid
anymore. However, we can fix that trivially: just make the "nop"
instruction we jam into here have the right type. That way, the leftover
field/element pointer instructions are perfectly valid, but still
unused.
Wow, *lots* of backends were reliant on Sema doing the heavy lifting for
them. CBE, Wasm, and SPIR-V have all regressed in places now that they
actually need to, like, initialize unions and such.
We're currently experimenting with backends which effectively do their
own liveness analysis, so this old trick of mine isn't necessarily valid
anymore. However, we can fix that trivially: just make the "nop"
instruction we jam into here have the right type. That way, the leftover
field/element pointer instructions are perfectly valid, but still
unused.
This is redundant because `storePtr2` will coerce to the return type
which (in `Sema.coerceInMemoryAllowedErrorSets`) will add errors to the
current function's IES if necessary.
This logic predates certain Sema enhancements whose behavior it
essentially tries to emulate in one specific case in a problematic way.
In particular, this logic handled initializing comptime-known `const`s
through RLS, which was reworked a few years back in 644041b to not rely
on this logic, and catching runtime fields in comptime-only
initializers, which has since been *correctly* fixed with better checks
in `Sema.storePtr2`. That made the highly complex logic in
`validateStructInit`, `validateUnionInit`, and `zirValidatePtrArrayInit`
entirely redundant. Worse, it was also causing some tracked bugs, as
well as a bug which I have identified and fixed in this PR (a
corresponding behavior test is added).
This commit simplifies union initialization by bringing the runtime
logic more in line with the comptime logic: the tag is now always
populated by `Sema.unionFieldPtr` based on `initializing`, where this
previously happened only in the comptime case (with `validateUnionInit`
instead handling it in the runtime case). Notably, this means that
backends are now able to consider getting a pointer to an inactive union
field as Illegal Behavior, because the `set_union_tag` instruction now
appears *before* the `struct_field_ptr` instruction as you would
probably expect it to.
Resolves: #24520Resolves: #24595
Changes fmtId to return the FormatId type directly, and renames the
FormatId.render function to FormatId.format, so it can be used in a
format expression directly.
Why? Since `render` is private, you can't create functions that wrap
`fmtId` or `fmtIdFlags`, since you can't name the return type of those
functions outside of std itself.
The current setup _might_ be intentional? In which case I can live with
it, but I figured I'd make a small contrib to upstream zig :)
This eliminates a footgun and special case handling with fixed buffers,
as well as allowing decompression streams to keep a window in the output
buffer.
Not only are `Step.Compile` methods like `linkLibC()` redundant because
`Module` exposes the same APIs, it also might not be immediately obvious
to users that these methods modify the underlying root module, which can
be a footgun and lead to unintended results if the module is exported to
package consumers or shared by multiple compile steps.
Using `compile.root_module.link_libc = true` makes it more clear to
users which of the compile step and the module owns which options.
Also check that FileNotFound is consistently returned when the path is missing.
The new `run_relative` step will test spawning paths like:
child_path: ../84385e7e669db0967d7a42765011dbe0/child
missing_child_path: ../84385e7e669db0967d7a42765011dbe0/child_intentionally_missing
besides simply being redundant work, the now removed normalize call would cause
spawn to errantly fail (BadPath) when passing a relative path which traversed
'above' the current working directory. This case is already handled by leaving
normalization to the windows.wToPrefixedFileW call in
windowsCreateProcessPathExt
This passes tests but it doesn't provide as big a window size as is
required to decompress larger streams.
The next commit in this branch will work towards that, without
introducing an additional buffer.
- factor out `loadReg`
- support all general system control registers in inline asm
- fix asserts after iterating field offsets
- fix typo in `slice_elem_val`
- fix translation of argument locations
This option never worked properly (it emitted wrongly-formatted code),
and it doesn't seem particularly *useful* -- someone who's proficient
enough with `std.Build` to not need explanations probably just wants to
write their own thing. Meanwhile, the use case of writing your own
`build.zig` was extremely poorly served, because `build.zig.zon` *needs*
to be generated programmatically for a correct `fingerprint`, but the
only ways to do that were to a) do it wrong and get an error, or b) get
the full init template and delete the vast majority of it. Both of these
were pretty clunky, and `-s` didn't really help.
So, replace this flag with a new one, `--minimal`/`-m`, which uses a
different template. This template is trivial enough that I opted to just
hardcode it into the compiler for simplicity. The main job of
`zig init -m` is to generate a correct `build.zig.zon` (if it is unable
to do this, it exits with a fatal error). In addition, it will *attempt*
to generate a tiny stub `build.zig`, with only an `std` import and an
empty `pub fn build`. However, if `build.zig` already exists, it will
avoid overwriting it, and doesn't even complain. This serves the use
case of writing `build.zig` manually and *then* running `zig init -m`
to generate an appropriate `build.zig.zon`.
https://github.com/ziglang/zig/issues/23635
I also added tests for `@rem()` with `denominator < 0` cause there were none before
I hope I added them in the correct place, if not I can change it ofc
Its design keeps evolving. See
https://github.com/Nicoshev/rapidhash/releases
It's great to see the design improving, but over time, this will lead to
code rot; versions that aren't widely used but would still have to live
in the standard library forever and be maintained.
Better to be maintained as an external dependency that applications can
opt into. Then, in a few years, if a version proves to be stable and
widely adopted, it could be considered for inclusion in the standard
library.
The rejection of #6025 indicates that if stackless coroutines return to
Zig, they will look quite different; see #23446 for the working draft
proposal for their return (though it will definitely be tweaked before
being accepted). Some of this test coverage was deleted in 40d11cc, but
because stackless coroutines will take on a new form if re-introduced, I
anticipate that essentially *none* of this coverage will be relevant. Of
course, if it for some reason is, we can always grab it from the Git
history.
* std.os.uefi.protocol.file: use @alignCast in getInfo() method to fix#24480
* std.os.uefi.protocol.file: pass alignment responsabilities to caller by redefining the buffer type instead of blindly calling @alignCast
ensure that it issues a stream call that includes the buffer to detect
the end when needed, but otherwise does not offer Reader buffer to
append directly to the list.
LLVM always assumes these are on. Zig backends do not observe them.
If Zig backends want to start using them, they can be introduced, one
arch at a time, with proper documentation.
Soft float is a very rare use case for riscv*-linux. No point wasting CI
resources on these targets, especially since our arm and mips soft float
coverage is already likely to catch most soft float bugs.
these are taking too long. let's use a different workflow for now until
these runs are not holding up the pipeline, then they can be
reintroduced on master branch
Without this change, by default you get a failure when trying to cross
compile for these targets.
freebsd was error: undefined symbol: __libc_start1
netbsd was warning: invalid target NetBSD libc version: 9.4.0
error: unable to build NetBSD libc shared objects: InvalidTargetLibCVersion
now they work by default
don't forget to save the list. this allows a
`testing.checkAllAllocationFailures()` test to pass in one of my
projects which newly failed since #24329 was merged.
Rather than having the endian-suffixed functions be the preferred ones
the unsuffixed ones are the preferred ones and the tricky functions get
a special suffix.
Makes packed structs read and written the same as integers.
closes#12960
The idea is to have 2 runners per machine, since a lot of time is spent building
stage3 and stage4, both of which are largely single-core affairs. This will make
the test steps take longer, however, so the timeouts have been bumped a bit, and
max RSS for the test step has been lowered from 64G to 32G to prevent OOM.
Finally, we now only run a single ReleaseSafe job on PRs; Debug and Release jobs
are limited to pushes.
Add an additional check before emitting `.loop_switch_br` instead
of `.switch_br` in a tagged switch statement for whether any of the
continues referencing its tag are actually runtime reachable.
This fixes triggering an assertion in Liveness caused by the invalid
assumption that every tagged switch must be a loop if its tag is
referenced in any way even if this reference is not runtime reachable.
The rule: `pub fn main` owns file descriptors 0, 1, and 2. If you didn't
write `pub fn main()` it is, in general, not your business to print to
stderr.
As written, I think langref's example is actually a poor reason to use
`inline`.
If you have
if (foo(1200, 34) != 1234) {
@compileError("bad");
}
and you want to make sure that the call is executed at compile time, the
right way to fix it is to add comptime
if (comptime foo(1200, 34) != 1234) {
@compileError("bad");
}
and not to make the function `inline`. I _think_ that inlining functions
just to avoid `comptime` at a call-site is an anti-pattern. When the
reader sees `foo(123)` at the call-site, they _expect_ this to be a
runtime call, as that's the normal rule in Zig.
Inline is still necessary when you can't make the _whole_ call
`comptime`, because it has some runtime effects, but you still want
comptime-known result.
A good example here is
inline fn findImportPkgHashOrFatal(b: *Build, comptime asking_build_zig: type, comptime dep_name: []const u8) []const u8 {
from Build.zig, where the `b` argument is runtime, and is used for
side-effects, but where the result is comptime.
I don't know of a good small example to demonstrate the subtelty here,
so I went ahead with just adding a runtime print to `foo`. Hopefully
it'll be enough for motivated reader to appreciate the subtelty!
* std.os.uefi.tables: ziggify boot and runtime services
* avoid T{} syntax
Co-authored-by: linusg <mail@linusgroh.de>
* misc fixes
* work
* self-review quickfixes
* dont make MemoryMapSlice generic
* more review fixes, work
* more work
* more work
* review fixes
* update boot/runtime services references throughout codebase
* self-review fixes
* couple of fixes i forgot to commit earlier
* fixes from integrating in my own project
* fixes from refAllDeclsRecursive
* Apply suggestions from code review
Co-authored-by: truemedian <truemedian@gmail.com>
* more fixes from review
* fixes from project integration
* make natural alignment of Guid align-8
* EventRegistration is a new opaque type
* fix getNextHighMonotonicCount
* fix locateProtocol
* fix exit
* partly revert 7372d65
* oops exit data_len is num of bytes
* fixes from project integration
* MapInfo consistency, MemoryType update per review
* turn EventRegistration back into a pointer
* forgot to finish updating MemoryType methods
* fix IntFittingRange calls
* set uefi.Page nat alignment
* Back out "set uefi.Page nat alignment"
This backs out commit cdd9bd6f7f5fb763f994b8fbe3e1a1c2996a2393.
* get rid of some error.NotFound-s
* fix .exit call in panic
* review comments, add format method
* fix resetSystem data alignment
* oops, didnt do a final refAllDeclsRecursive i guess
* review comments
* writergate update MemoryType.format
* fix rename
---------
Co-authored-by: linusg <mail@linusgroh.de>
Co-authored-by: truemedian <truemedian@gmail.com>
This silences the excessive default stderr logging from Wine. The user can still
override this by setting WINEDEBUG in the environment; this just provides a more
sensible default.
Closes#24139.
Basically everything that has a direct replacement or no uses left.
Notable omissions:
- std.ArrayHashMap: Too much fallout, needs a separate cleanup.
- std.debug.runtime_safety: Too much fallout.
- std.heap.GeneralPurposeAllocator: Lots of references to it remain, not
a simple find and replace as "debug allocator" is not equivalent to
"general purpose allocator".
- std.io.Reader: Is being reworked at the moment.
- std.unicode.utf8Decode(): No replacement, needs a new API first.
- Manifest backwards compat options: Removal would break test data used
by TestFetchBuilder.
- panic handler needs to be a namespace: Many tests still rely on it
being a function, needs a separate cleanup.
Apparently raw LLVM IR Bitcode files ("Bitstreams") may appear in
archives with LTO enabled. I observed this in the wild on
Chimera Linux.
I'm not yet sure if it's in scope for Zig to support these special
archives, but we should at least give a correct error message.
Deprecates all existing std.io readers and writers in favor of the newly
provided std.io.Reader and std.io.Writer which are non-generic and have the
buffer above the vtable - in other words the buffer is in the interface, not
the implementation. This means that although Reader and Writer are no longer
generic, they are still transparent to optimization; all of the interface
functions have a concrete hot path operating on the buffer, and only make
vtable calls when the buffer is full.
Alignment and fill options only apply to numbers.
Rework the implementation to mainly branch on the format string rather
than the type information. This is more straightforward to maintain and
more straightforward for comptime evaluation.
Enums support being printed as decimal, hexadecimal, octal, and binary.
`formatInteger` is another possible format method that is
unconditionally called when the value type is struct and one of the
integer-printing format specifiers are used.
for structs, enums, and unions.
auto untagged unions are no longer printed as pointers; instead they are
printed as "{ ... }".
extern and packed untagged unions have each field printed, similar to
what gdb does.
also fix bugs in delimiter based reading
added adapter to AnyWriter and GenericWriter to help bridge the gap
between old and new API
make std.testing.expectFmt work at compile-time
std.fmt no longer has a dependency on std.unicode. Formatted printing
was never properly unicode-aware. Now it no longer pretends to be.
Breakage/deprecations:
* std.fs.File.reader -> std.fs.File.deprecatedReader
* std.fs.File.writer -> std.fs.File.deprecatedWriter
* std.io.GenericReader -> std.io.Reader
* std.io.GenericWriter -> std.io.Writer
* std.io.AnyReader -> std.io.Reader
* std.io.AnyWriter -> std.io.Writer
* std.fmt.format -> std.fmt.deprecatedFormat
* std.fmt.fmtSliceEscapeLower -> std.ascii.hexEscape
* std.fmt.fmtSliceEscapeUpper -> std.ascii.hexEscape
* std.fmt.fmtSliceHexLower -> {x}
* std.fmt.fmtSliceHexUpper -> {X}
* std.fmt.fmtIntSizeDec -> {B}
* std.fmt.fmtIntSizeBin -> {Bi}
* std.fmt.fmtDuration -> {D}
* std.fmt.fmtDurationSigned -> {D}
* {} -> {f} when there is a format method
* format method signature
- anytype -> *std.io.Writer
- inferred error set -> error{WriteFailed}
- options -> (deleted)
* std.fmt.Formatted
- now takes context type explicitly
- no fmt string
preparing to rearrange std.io namespace into an interface
how to upgrade:
std.io.getStdIn() -> std.fs.File.stdin()
std.io.getStdOut() -> std.fs.File.stdout()
std.io.getStdErr() -> std.fs.File.stderr()
Macos uses the BSD definition of msghdr
All linux architectures share a single msghdr definition. Many
architectures had manually inserted padding fields that were endian
specific and some had fields with different integers. This unifies all
architectures to use a single correct msghdr definition.
necessary because to pass `zig fmt --check` we need to use the canonical
identifier syntax, which means changing `.@"async"` to `.async` which
previous zig1 is unable to parse.
Also remove `@frameSize`, closing #3654.
While the other machinery might remain depending on #23446, it is
settled that there will not be `async`/ `await` keywords in the
language.
This matches what we do for small helper libraries like this in MinGW-w64. It
simplifies the compiler a bit, and also means the build system doesn't have to
treat these library names specially.
Closes#24325.
It's kind of unclear what `*-windows-none` actually means, but as far as LLVM is
concerned, it's equivalent to `*-windows-msvc`. For clarity, only test
`*-windows-msvc` and `*-windows-gnu`. #20690 will clean this situation up
eventually.
Also ensure coverage of `link_libc = true` and `link_libc = false` for both.
The overflow check for safe signed subtraction was using the formula (rhs < 0) == (lhs > result). This logic is flawed and incorrectly reports an overflow when the right-hand side is zero.
For the expression 42 - 0, this check evaluated to (0 < 0) == (42 > 42), which is false == false, resulting in true. This caused the generated SPIR-V to incorrectly branch to an OpUnreachable instruction, preventing the result from being stored.
Fixes#24281.
* resinator: Only preprocess when the input is an .rc file
* resinator: Fix include directory detection when cross-compiling from certain host archs
Previously, resinator would use the host arch as the target arch when looking for windows-gnu include directories. However, Zig only thinks it can provide a libc for targets specified in the `std.zig.target.available_libcs` array, which only includes a few for windows-gnu. Therefore, when cross-compiling from a host architecture that doesn't have a windows-gnu target in the available_libcs list, resinator would fail to detect the MinGW include directories.
Now, the custom option `/:target` is passed to `zig rc` which is intended for the COFF object file target, but can be re-used for the include directory target as well. For the include directory target, resinator will convert the MachineType to the relevant arch, or fail if there is no equivalent arch/no support for detecting the includes for the MachineType (currently 64-bit Itanium and EBC).
Fixes the `windows_resources` standalone test failing when the host is, for example, `riscv64-linux`.
Previously, resinator would use the host arch as the target arch when looking for windows-gnu include directories. However, Zig only thinks it can provide a libc for targets specified in the `std.zig.target.available_libcs` array, which only includes a few for windows-gnu. Therefore, when cross-compiling from a host architecture that doesn't have a windows-gnu target in the available_libcs list, resinator would fail to detect the MinGW include directories.
Now, the custom option `/:target` is passed to `zig rc` which is intended for the COFF object file target, but can be re-used for the include directory target as well. For the include directory target, resinator will convert the MachineType to the relevant arch, or fail if there is no equivalent arch/no support for detecting the includes for the MachineType (currently 64-bit Itanium and EBC).
Fixes the `windows_resources` standalone test failing when the host is, for example, `riscv64-linux`.
* Fix warning WasmMut_toC not all control paths return a value
This is a follow up to https://github.com/ziglang/zig/pull/24206 where
I had previously submitted different mechanisms to fix this warning.
This PR is a suggestion by Alex to return NULL instead and Andrew
confirmed this is his preference.
* c.darwin: define MSG for macos
* darwin: add series os name
* Update lib/std/c.zig
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
---------
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
Btrfs at least supports 16 EiB files (limited in practice to 8EiB by the
Linux VFS code which uses signed 64-bit offsets). So fix the fs.zig test
case to expect either a FileTooBig or success from truncating a file to
8EiB. And test that beyond that size the offset is interpreted as a
negative number.
Fixes#24242
musl and glibc both specify r0 as an output register because its value
may be overwritten by system calls. As with the updates for 64-bit
PowerPC in the previous commit, this commit brings Zig's syscall
functions for 32-bit PowerPC in line with musl and glibc by adding r0 to
the list of clobbers. (Listing r0 as both an input and a clobber is as
close as we can get to musl, which declares it as a "+r" read-write
output, since Zig doesn't support multiple outputs or the "+"
specifier.)
On powerpc64le Linux, the registers used for passing syscall parameters
(r4-r8, as well as r0 for the syscall number) are volatile, or
caller-saved. However, Zig's syscall wrappers for this architecture do
not include all such registers in the list of clobbers, leading the
compiler to assume these registers will maintain their values after the
syscall completes.
In practice, this resulted in a segfault when allocating memory with
`std.heap.SmpAllocator`, which calls `std.os.linux.sched_getaffinity`.
The third parameter to `sched_getaffinity` is a pointer to a `cpu_set_t`
and is stored in register r5. After the syscall, the code attempts to
access data in the `cpu_set_t`, but because the compiler doesn't realize
the value of r5 may have changed, it uses r5 as the memory address, which
in practice resulted in a memory access at address 0x8.
This commit adds all volatile registers to the list of clobbers.
This is not meant to be a long-term solution, but it's the easiest thing
to get working quickly at the moment. The main intention of this hack is
to allow more tests to be enabled. By the time the coff linker is far
enough along to be enabled by default, this will no longer be required.
e.g. `x86_64-windows.win10...win11_dt-gnu` -> `x86_64-windows-gnu`
When the OS version is the default this is redundant with checking the
default in the standard library.
* `futex2_waitv` always takes a 64-bit timespec. Perhaps the
`kernel_timespec` should be renamed `timespec64`? Its used in iouring,
too.
* Add `packed struct` for futex v2 flags and parameters.
* Add very basic "tests" for the futex v2 syscalls (just to ensure the
code compiles).
* Update the stale or broken comments. (I could also just delete these
they're not really documenting Zig-specific behavior.)
Given that the futex2 APIs are not used by Zig's library (they're a bit
too new), and the fact that these are very specialized syscalls, and they
currently provide no benefit over the existing v1 API, I wonder if instead
of fixing these up, we should just replace them with a stub that says 'use
a 3rd party library'.
This is necessary in two cases:
* On POSIX, the exe path (`argv[0]`) must contain a path separator
* Some programs might treat a file named e.g. `-foo` as a flag, which
can be avoided by passing `./-foo`
Rather than detecting these two cases, just always include the prefix;
there's no harm in it.
Also, if the cwd is specified, include it in the manifest. If the user
has set the cwd of a Run step, it is clearly because this affects the
behavior of the executable somehow, so that cwd path should be a part of
the step's manifest.
Resolves: #24216
Cmake by default adds the `/RTC1` compiler flag for debug builds.
However, this causes C code that conforms to the C standard and has
well-defined behavior to trap. Here I've updated CMAKE to use the more
lenient `/RTCs` by default which removes the uninitialized variable checks
but keeps the stack error checks.
* Use `packed struct` for flags arguments. So, instead of
`linux.FUTEX.WAIT` use `.{ .cmd = .WAIT, .private = true }`
* rename `futex_wait` and `futex_wake` which didn't actually specify
wait/wake, as `futex_3arg` and `futex_4arg` (as its the number
of parameters that is different, the `op` is whatever is specified.
* expose the full six-arg flavor of the syscall (for some of the advanced
ops), and add packed structs for their arguments.
* Use a `packed union` to support the 4th parameter which is sometimes a
`timespec` pointer, and sometimes a `u32`.
* Add tests that make sure the structure layout is correct and that the
basic argument passing is working (no actual futexes are contended).
Also add a standalone test which covers the `-fentry` case. It does this
by performing two reproducible compilations which are identical other
than having different entry points, and checking whether the emitted
binaries are identical (they should *not* be).
Resolves: #23869
`std.Build.Step.ConfigHeader` emits a *directory* containing a config
header under a given sub path, but there's no good way to actually
access that directory as a `LazyPath` in the configure phase. This is
silly; it's perfectly valid to refer to that directory, perhaps to
explicitly pass as a "-I" flag to a different toolchain invoked via a
`Step.Run`. So now, instead of the `GeneratedFile` being the actual
*file*, it should be that *directory*, i.e. `cache/o/<digest>`. We can
then easily get the *file* if needed just by using `LazyPath.path` to go
"deeper", which there is a helper function for.
The legacy `getOutput` function is now a deprecated alias for
`getOutputFile`, and `getOutputDir` is introduced.
`std.Build.Module.IncludeDir.appendZigProcessFlags` needed a fix after
this change, so I took the opportunity to refactor it a little. I was
looking at this function while working on ziglang/translate-c yesterday
and realised it could be expressed much more simply -- particularly
after the `ConfigHeader` change here.
I had to update the test `standalone/cmakedefine/` -- it turns out this
test was well and truly reaching into build system internals, and doing
horrible not-really-allowed stuff like overriding the `makeFn` of a
`TopLevelStep`. To top it all off, the test forgot to set
`b.default_step` to its "test" step, so the test never even ran. I've
refactored it to follow accepted practices and to actually, like, work.
This function is sometimes used to assume a canonical representation of
a path. However, when the `Path` referred to `root_dir` itself, this
function previously resolved `sub_path` to ".", which is incorrect; per
doc comments, it should set `sub_path` to "".
This fix ultimately didn't solve what I was trying to solve, though I'm
still PRing it, because it's still *correct*. The background to this
commit is quite interesting and worth briefly discussing.
I originally worked on this to try and fix a bug in the build system,
where if the root package (i.e. the one you `zig build`) depends on
package X which itself depends back on the root package (through a
`.path` dependency), invalid dependency modules are generated. I hit
this case working on ziglang/translate-c, which wants to depend on
"examples" (similar to the Zig compiler's "standalone" test cases) which
themselves depend back on the translate-c package. However, after this
patch just turned that error into another, I realised that this case
simply cannot work, because `std.Build` needs to eagerly execute build
scripts at `dependency` calls to learn which artifacts, modules, etc,
exist.
...at least, that's how the build system is currently designed. One can
imagine a world where `dependency` sort of "queues" the call, `artifact`
and `module` etc just pretend that the thing exists, and all configure
functions are called non-recursively by the runner. The downside is that
it becomes impossible to query state set by a dependency's configure
script. For instance, if a dependency exposes an artifact, it would
become impossible to get that artifact's resolved target in the
configure phase. However, as well as allowing recursive package imports
(which are certainly kinda nifty), it would also make lazy dependencies
far more useful! Right now, lazy dependencies only really work if you
use options (`std.Build.option`) to block their usage, since any call to
`lazyDependency` causes the dependency to be fetched. However, if we
made this change, lazy dependencies could be made far more versatile by
only fetching them *if the final step plan requires them*. I'm not 100%
sure if this is a good idea or not, but I might open an issue for it
soon.
There will be more call sites to `preparePanicId` as we transition away
from safety checks in Sema towards safety checked instructions; it's
silly for them to all have this clunky usage.
This safety check was completely broken; it triggered unchecked illegal
behavior *in order to implement the safety check*. You definitely can't
do that! Instead, we must explicitly check the boundaries. This is a
tiny bit fiddly, because we need to make sure we do floating-point
rounding in the correct direction, and also handle the fact that the
operation truncates so the boundary works differently for min vs max.
Instead of implementing this safety check in Sema, there are now
dedicated AIR instructions for safety-checked intfromfloat (two
instructions; which one is used depends on the float mode). Currently,
no backend directly implements them; instead, a `Legalize.Feature` is
added which expands the safety check, and this feature is enabled for
all backends we currently test, including the LLVM backend.
The `u0` case is still handled in Sema, because Sema needs to check for
that anyway due to the comptime-known result. The old safety check here
was also completely broken and has therefore been rewritten. In that
case, we just check for 'abs(input) < 1.0'.
I've added a bunch of test coverage for the boundary cases of
`@intFromFloat`, both for successes (in `test/behavior/cast.zig`) and
failures (in `test/cases/safety/`).
Resolves: #24161
These conversion routines accept a `round` argument to control how the
result is rounded and return whether the result is exact. Most callers
wanted this functionality and had hacks around it being missing.
Also delete `std.math.big.rational` because it was only being used for
float conversion, and using rationals for that is a lot more complex
than necessary. It also required an allocator, whereas the new integer
routines only need to be passed enough memory to store the result.
If you write an if expression in mem.doNotOptimizeAway like
doNotOptimizeAway(if (ix < 0x00100000) x / 0x1p120 else x + 0x1p120);,
FCSEL instruction is used on AArch64.
FCSEL instruction selects one of the two registers according to
the condition and copies its value.
In this example, `x / 0x1p120` and `x + 0x1p120` are expressions
that raise different floating-point exceptions.
However, since both are actually evaluated before the FCSEL
instruction, the exception not intended by the programmer may
also be raised.
To prevent FCSEL instruction from being used here, this commit
splits doNotOptimizeAway in two.
and also rename `advancedPrint` to `bufferedPrint` in the zig init templates
These are left overs from my previous changes to zig init.
The new templating system removes LITNAME because the new restrictions on package names make it redundant with NAME, and the use of underscores for marking templated identifiers lets us template variable names while still keeping zig fmt happy.
Did you know that allocators reuse addresses? If not, then don't feel
bad, because apparently I don't either! This dumb mistake was probably
responsible for the CI failures on `master` yesterday.
I messed up atomic orderings on this variable because they changed in a
local refactor at some point. We need to always release on the store and
acquire on the loads so that a linker thread observing `.ready` sees the
stored MIR.
Because any `LazyPath` might be resolved to a relative path, it's
incorrect to pass that directly to a child process whose cwd might
differ. Instead, if the child has an overriden cwd, we need to convert
such paths to be relative to the child cwd using `std.fs.path.relative`.
File arguments added to `std.Build.Step.Run` with e.g. `addFileArg` are
not necessarily passed as absolute paths. It used to be the case that
they were as a consequence of an unnecessary path conversion done by the
frontend, but this no longer happens, at least not always, so these
tests were sometimes failing when run locally. Therefore, the standalone
tests must handle cwd-relative CLI paths correctly.
* Sema: allow binary operations and boolean not on vectors of bool
* langref: Clarify use of operators on vectors (`and` and `or` not allowed)
closes#24093
Looking at a compilation of 'test/behavior/x86_64/unary.zig' in
callgrind showed that a full 30% of the compiler runtime was spent in
this `stringToEnum` call, so optimizing it was low-hanging fruit.
We tried replacing it with nested `switch` statements using
`inline else`, but that generated too much code; it didn't emit huge
binaries or anything, but LLVM used a *ridiculous* amount of memory
compiling it in some cases. The core problem here is that only a small
subset of the cases are actually used (the rest fell through to an
"error" path), but that subset is computed at comptime, so we must rely
on the optimizer to eliminate the thousands of redundant cases. This
would be solved by #21507.
Instead, we pre-compute a lookup table at comptime. This table is pretty
big (I guess a couple hundred k?), but only the "valid" subset of
entries will be accessed in practice (unless a bug in the backend is
hit), so it's not too awful on the cache; and it performs much better
than the old `std.meta.stringToEnum` call.
Update the estimated total items for the codegen and link progress nodes
earlier. Rather than waiting for the main thread to dispatch the tasks,
we can add the item to the estimated total as soon as we queue the main
task. The only difference is we need to complete it even in error cases.
Without this cap, unlucky scheduling and/or details of what pipeline
stages perform best on the host machine could cause many gigabytes of
MIR to be stuck in the queue. At a certain point, pause the main thread
until some of the functions in flight have been processed.
This isn't really coherent to model as a `Feature`; this makes sense
because of zig1's specific environment. As such, I opted to check
`dev.env` directly.
Previously, `PerThread.populateTestFunctions` was analyzing the
`test_functions` declaration if it hadn't already been analyzed, so that
it could then populate it. However, the logic for doing this wasn't
actually correct, because it didn't trigger the necessary type
resolution. I could have tried to fix this, but there's actually a
simpler solution! If the `test_functions` declaration isn't referenced
or has a compile error, then we simply don't need to update it; either
it's unreferenced so its value doesn't matter, or we're going to get a
compile error anyway. Either way, we can just give up early. This avoids
doing semantic analysis after `performAllTheWork` finishes.
Also, get rid of the "Code Generation" progress node while updating the
test decl: this is a linking task.
The name of the ZCU object file emitted by the LLVM backend has been
changed in this branch from e.g. `foo.obj` to `foo_zcu.obj`. This is to
avoid name clashes. This commit just updates the stack trace tests which
started failing on windows because of the object name change.
The name of the ZCU object file emitted by the LLVM backend has been
changed in this branch from e.g. `foo.o` to `foo_zcu.o`. This is to
avoid name clashes. This commit just updates a link test which started
failing because the object name in a linker error changed.
glibc, freebsd, and netbsd all do caching manually, because of the fact
that they emit multiple files which they want to cache as a block.
Therefore, the individual sub-compilation on a cache miss should be
using `CacheMode.none` so that we can specify the output paths for each
sub-compilation as being in the shared output directory.
* "Flush" nodes ("LLVM Emit Object", "ELF Flush") appear under "Linking"
* "Code Generation" disappears when all analysis and codegen is done
* We only show one node under "Semantic Analysis" to accurately convey
that analysis isn't happening in parallel, but rather that we're
pausing one task to do another
Previously, various doc comments heavily disagreed with the
implementation on both what lives where on the filesystem at what time,
and how that was represented in code. Notably, the combination of emit
paths outside the cache and `disable_lld_caching` created a kind of
ad-hoc "cache disable" mechanism -- which didn't actually *work* very
well, 'most everything still ended up in this cache. There was also a
long-standing issue where building using the LLVM backend would put a
random object file in your cwd.
This commit reworks how emit paths are specified in
`Compilation.CreateOptions`, how they are represented internally, and
how the cache usage is specified.
There are now 3 options for `Compilation.CacheMode`:
* `.none`: do not use the cache. The paths we have to emit to are
relative to the compiler cwd (they're either user-specified, or
defaults inferred from the root name). If we create any temporary
files (e.g. the ZCU object when using the LLVM backend) they are
emitted to a directory in `local_cache/tmp/`, which is deleted once
the update finishes.
* `.whole`: cache the compilation based on all inputs, including file
contents. All emit paths are computed by the compiler (and will be
stored as relative to the local cache directory); it is a CLI error to
specify an explicit emit path. Artifacts (including temporary files)
are written to a directory under `local_cache/tmp/`, which is later
renamed to an appropriate `local_cache/o/`. The caller (who is using
`--listen`; e.g. the build system) learns the name of this directory,
and can get the artifacts from it.
* `.incremental`: similar to `.whole`, but Zig source file contents, and
anything else which incremental compilation can handle changes for, is
not included in the cache manifest. We don't need to do the dance
where the output directory is initially in `tmp/`, because our digest
is computed entirely from CLI inputs.
To be clear, the difference between `CacheMode.whole` and
`CacheMode.incremental` is unchanged. `CacheMode.none` is new
(previously it was sort of poorly imitated with `CacheMode.whole`). The
defined behavior for temporary/intermediate files is new.
`.none` is used for direct CLI invocations like `zig build-exe foo.zig`.
The other cache modes are reserved for `--listen`, and the cache mode in
use is currently just based on the presence of the `-fincremental` flag.
There are two cases in which `CacheMode.whole` is used despite there
being no `--listen` flag: `zig test` and `zig run`. Unless an explicit
`-femit-bin=xxx` argument is passed on the CLI, these subcommands will
use `CacheMode.whole`, so that they can put the output somewhere without
polluting the cwd (plus, caching is potentially more useful for direct
usage of these subcommands).
Users of `--listen` (such as the build system) can now use
`std.zig.EmitArtifact.cacheName` to find out what an output will be
named. This avoids having to synchronize logic between the compiler and
all users of `--listen`.
It turns out that LLD caching hasn't been in use for a while. On master,
it is currently only enabled when you compile via the build system,
passing `-fincremental`, using LLD (and so LLVM if there's a ZCU). That
case never happens, because `-fincremental` is only useful when you're
using a backend *other* than the LLVM backend. My previous commits
accidentally re-enabled this logic in some cases, exposing bugs; that
ultimately led to this realisation. So, let's just delete that logic --
less LLVM-related cruft to maintain.
Unfortunately, the self-hosted SPIR-V backend is quite tightly coupled
with the self-hosted SPIR-V linker through its `Object` concept (which
is much like `llvm.Object`). Reworking this would be too much work for
this branch. So, for now, I have introduced a special case (similar to
the LLVM backend's special case) to the codegen logic when using this
backend. We will want to delete this special case at some point, but it
need not block this work.
My original goal here was just to get the self-hosted Wasm backend
compiling again after the pipeline change, but it turned out that from
there it was pretty simple to entirely eliminate the shared state
between `codegen.wasm` and `link.Wasm`. As such, this commit not only
fixes the backend, but makes it the second backend (after CBE) to
support the new 1:N:1 threading model.
As of this commit, every backend other than self-hosted Wasm and
self-hosted SPIR-V compiles and (at least somewhat) functions again.
Those two backends are currently disabled with panics.
Note that `Zcu.Feature.separate_thread` is *not* enabled for the fixed
backends. Avoiding linker references from codegen is a non-trivial task,
and can be done after this branch.
The idea here is that instead of the linker calling into codegen,
instead codegen should run before we touch the linker, and after MIR is
produced, it is sent to the linker. Aside from simplifying the call
graph (by preventing N linkers from each calling into M codegen
backends!), this has the huge benefit that it is possible to
parallellize codegen separately from linking. The threading model can
look like this:
* 1 semantic analysis thread, which generates AIR
* N codegen threads, which process AIR into MIR
* 1 linker thread, which emits MIR to the binary
The codegen threads are also responsible for `Air.Legalize` and
`Air.Liveness`; it's more efficient to do this work here instead of
blocking the main thread for this trivially parallel task.
I have repurposed the `Zcu.Feature.separate_thread` backend feature to
indicate support for this 1:N:1 threading pattern. This commit makes the
C backend support this feature, since it was relatively easy to divorce
from `link.C`: it just required eliminating some shared buffers. Other
backends don't currently support this feature. In fact, they don't even
compile -- the next few commits will fix them back up.
Similar to the previous commit, this commit untangles LLD integration
from the self-hosted linkers. Despite the big network of functions which
were involved, it turns out what was going on here is quite simple. The
LLD linking logic is actually very self-contained; it requires a few
flags from the `link.File.OpenOptions`, but that's really about it. We
don't need any of the mutable state on `Elf`/`Coff`/`Wasm`, for
instance. There was some legacy code trying to handle support for using
self-hosted codegen with LLD, but that's not a supported use case, so
I've just stripped it out.
For now, I've just pasted the logic for linking the 3 targets we
currently support using LLD for into this new linker implementation,
`link.Lld`; however, it's almost certainly possible to combine some of
the logic and simplify this file a bit. But to be honest, it's not
actually that bad right now.
This commit ends up eliminating the distinction between `flush` and
`flushZcu` (formerly `flushModule`) in linkers, where the latter
previously meant something along the lines of "flush, but if you're
going to be linking with LLD, just flush the ZCU object file, don't
actually link"?. The distinction here doesn't seem like it was properly
defined, and most linkers seem to treat them as essentially identical
anyway. Regardless, all calls to `flushZcu` are gone now, so it's
deleted -- one `flush` to rule them all!
The end result of this commit and the preceding one is that LLVM and LLD
fit into the pipeline much more sanely:
* If we're using LLVM for the ZCU, that state is on `zcu.llvm_object`
* If we're using LLD to link, then the `link.File` is a `link.Lld`
* Calls to "ZCU link functions" (e.g. `updateNav`) lower to calls to the
LLVM object if it's available, or otherwise to the `link.File` if it's
available (neither is available under `-fno-emit-bin`)
* After everything is done, linking is finalized by calling `flush` on
the `link.File`; for `link.Lld` this invokes LLD, for other linkers it
flushes self-hosted linker state
There's one messy thing remaining, and that's how self-hosted function
codegen in a ZCU works; right now, we process AIR with a call sequence
something like this:
* `link.doTask`
* `Zcu.PerThread.linkerUpdateFunc`
* `link.File.updateFunc`
* `link.Elf.updateFunc`
* `link.Elf.ZigObject.updateFunc`
* `codegen.generateFunction`
* `arch.x86_64.CodeGen.generate`
So, we start in the linker, take a scenic detour through `Zcu`, go back
to the linker, into its implementation, and then... right back out, into
code which is generic over the linker implementation, and then dispatch
on the *backend* instead! Of course, within `arch.x86_64.CodeGen`, there
are some more places which switch on the `link` implementation being
used. This is all pretty silly... so it shall be my next target.
The main goal of this commit is to make it easier to decouple codegen
from the linkers by being able to do LLVM codegen without going through
the `link.File`; however, this ended up being a nice refactor anyway.
Previously, every linker stored an optional `llvm.Object`, which was
populated when using LLVM for the ZCU *and* linking an output binary;
and `Zcu` also stored an optional `llvm.Object`, which was used only
when we needed LLVM for the ZCU (e.g. for `-femit-llvm-bc`) but were not
emitting a binary.
This situation was incredibly silly. It meant there were N+1 places the
LLVM object might be instead of just 1, and it meant that every linker
had to start a bunch of methods by checking for an LLVM object, and just
dispatching to the corresponding method on *it* instead if it was not
`null`.
Instead, we now always store the LLVM object on the `Zcu` -- which makes
sense, because it corresponds to the object emitted by, well, the Zig
Compilation Unit! The linkers now mostly don't make reference to LLVM.
`Compilation` makes sure to emit the LLVM object if necessary before
calling `flush`, so it is ready for the linker. Also, all of the
`link.File` methods which act on the ZCU -- like `updateNav` -- now
check for the LLVM object in `link.zig` instead of in every single
individual linker implementation. Notably, the change to LLVM emit
improves this rather ludicrous call chain in the `-fllvm -flld` case:
* Compilation.flush
* link.File.flush
* link.Elf.flush
* link.Elf.linkWithLLD
* link.Elf.flushModule
* link.emitLlvmObject
* Compilation.emitLlvmObject
* llvm.Object.emit
Replacing it with this one:
* Compilation.flush
* llvm.Object.emit
...although we do currently still end up in `link.Elf.linkWithLLD` to do
the actual linking. The logic for invoking LLD should probably also be
unified at least somewhat; I haven't done that in this commit.
* The `codegen_nav`, `codegen_func`, `codegen_type` tasks are renamed to
`link_nav`, `link_func`, and `link_type`, to more accurately reflect
their purpose of sending data to the *linker*. Currently, `link_func`
remains responsible for codegen; this will change in an upcoming
commit.
* Don't go on a pointless detour through `PerThread` when linking ZCU
functions/`Nav`s; so, the `linkerUpdateNav` etc logic now lives in
`link.zig`. Currently, `linkerUpdateFunc` is an exception, because it
has broader responsibilities including codegen, but this will be
solved in an upcoming commit.
I'm not convinced that some of the possibilities that these regexes allowed are real. I've literally never seen or heard of "armhfel", nor of "thumb" ever showing up in `uname -m`, etc.
* trailing whitespace
* langref: undefined _is_ materialized in all safe modes
I am also not super happy about the clause that immediately follows. I
_believe_ what we want to say here is that, simultaneously:
* undefined is guaranteed to be matrerialized in in all safe modes.
A Zig implementation that elides `ptr.* = undefined` in ReleaseSafe
mode would be a non-conforming implementation.
* A Zig program that relies on undefined being materialized is buggy.
But I don't think it's the time to engage this level of language-lawering!
Currently, Zig semantically loads an array as a temporary when indexing
it. This means it cannot be guaranteed that only the requested element
is loaded; in particular, our self-hosted backends do not elide the load
of the full array, so this test case was crashing on self-hosted.
Representing this with a `GenZir` field is incredibly bug-prone.
Instead, just pass this data directly to the relevant expression in the
very few places which actually provide a name strategy.
Resolves: #22798
Note that `openLoadArchive` already has linker script support.
With this change I get a failure parsing a real archive in the self
hosted elf linker, rather than the previous behavior of getting an error
while trying to parse a pseudo archive that is actually a load script.
The addition of FreeBSD and NetBSD targets to the test matrix in #24013 seems to
be causing timeouts under load. We might need to exclude some of those from CI,
but start by bumping the timeout so we can get a sense of how much more time is
actually needed.
To my knowledge, the only platforms that actually *require* PIE are Fuchsia and
Android, and the latter *only* when building a dynamically-linked executable.
OpenBSD and macOS both strongly encourage using PIE by default, but it isn't
technically required. So for the latter platforms, we enable it by default but
don't enforce it.
Also, importantly, if we're building an object file or a static library, and the
user hasn't explicitly told us whether to build PIE or non-PIE code (and the
target doesn't require PIE), we should *not* default to PIE. Doing so produces
code that cannot be linked into non-PIE output. In other words, building an
object file or a static library as PIE is an optimization only to be done when
the user knows that it'll end up in a PIE executable in the end.
Closes#21837.
Linking it by default means that we produce binaries that, effectively, only run
on systems which have the Windows SDK installed because ucrtbased.dll is not
redistributable, and the Windows SDK is what actually installs ucrtbased.dll
into %SYSTEM32%. The resulting binaries also can't run under Wine because Wine
does not provide ucrtbased.dll.
It is also inconsistent with our behavior for *-windows-gnu where we always link
ucrtbase.dll. See #23983, #24019, and #24053 for more details.
So just use ucrtbase.dll regardless of mode. With this change, we can also drop
the implicit definition of the _DEBUG macro in zig cc, which has in some cases
been problematic for users.
Users who want to opt into the old behavior can do so, both for *-windows-msvc
and *-windows-gnu, by explicitly passing -lucrtbased and -D_DEBUG. We might
consider adding a more ergonomic flag like -fdebug-crt to the zig build-* family
of commands in the future.
Closes#24052.
We have no control over memory usage on arbitrary systems in the wild. But we
would still like to get the warnings so we can adjust the values based on
observations in the official ZSF CI.
Closes#23254.
Closes#23638.
This commit introduces a new flag to generate a new Zig project using
`zig init` without comments for users who are already familiar with the
Zig build system.
Additionally, the generated files are now different. Previously we would
generate a set of files that defined a static library and an executable,
which real-life experience has shown to cause confusion to newcomers.
The new template generates one Zig module and one executable both in
order to accommodate the two most common use cases, but also to suggest
that a library could use a CLI tool (e.g. a parser library could use a
CLI tool that provides syntax checking) and vice-versa a CLI tool might
want to expose its core functionality as a Zig module.
All references to C interoperability are removed from the template under
the assumption that if you're tall enough to do C interop, you're also
tall enough to find your way around the build system. Experienced users
will still be able to use the current template and adapt it with minimal
changes in order to perform more advanced operations. As an example, one
only needs to change `b.addExecutable` to `b.addLibrary` to switch from
generating an executable to a dynamic (or static) library.
For instance, the file 'cases/compile_errors/undeclared_identifier.zig'
now corresponds to test name 'compile_errors.undeclared_identifier'.
This is useful because you can now filter based on the case dirname
using `-Dtest-filter`.
`castTruncatedData` was a poorly worded error (all shrinking casts
"truncate bits", it's just that we assume those bits to be zext/sext of
the other bits!), and `negativeToUnsigned` was a pointless distinction
which forced the compiler to emit worse code (since two separate safety
checks were required for casting e.g. 'i32' to 'u16') and wasn't even
implemented correctly. This commit combines those safety panics into one
function, `integerOutOfBounds`. The name maybe isn't perfect, but that's
not hugely important; what matters is the new default message, which is
clearer than the old ones: "integer does not fit in destination type".
Runtime `@shuffle` has two cases which backends generally want to handle
differently for efficiency:
* One runtime vector operand; some result elements may be comptime-known
* Two runtime vector operands; some result elements may be undefined
The latter case happens if both vectors given to `@shuffle` are
runtime-known and they are both used (i.e. the mask refers to them).
Otherwise, if the result is not entirely comptime-known, we are in the
former case. `Sema` now diffentiates these two cases in the AIR so that
backends can easily handle them however they want to. Note that this
*doesn't* really involve Sema doing any more work than it would
otherwise need to, so there's not really a negative here!
Most existing backends have their lowerings for `@shuffle` migrated in
this commit. The LLVM backend uses new lowerings suggested by Jacob as
ones which it will handle effectively. The x86_64 backend has not yet
been migrated; for now there's a panic in there. Jacob will implement
that before this is merged anywhere.
This adds 4 `Legalize.Feature`s:
* `expand_intcast_safe`
* `expand_add_safe`
* `expand_sub_safe`
* `expand_mul_safe`
These do pretty much what they say on the tin. This logic was previously
in Sema, used when `Zcu.Feature.safety_checked_instructions` was not
supported by the backend. That `Zcu.Feature` has been removed in favour
of this legalization.
We don't seem to be getting non-deterministic hangs since 4f3b59f, and e28b402
cut the run times significantly on top of that. Runs now seem to take around 1-2
hours, so the default timeout should be plenty.
This defines a WinMain() function that can be potentially problematic when it
isn't wanted. If we add back support for this library in the future, it should
be built separately from mingw32.lib and on demand.
These are almost entirely identical, with these exceptions:
* lib/libc/include/csky-linux-{gnueabi,gnueabihf}
* gnu/{lib-names,stubs}.h will need manual patching for float ABI.
* lib/libc/include/{powerpc-linux-{gnueabi,gnueabihf},{powerpc64,powerpc64le}-linux-gnu}
* bits/long-double.h will need manual patching for long double ABI.
std tests are temporarily disabled for arm-freebsd-eabihf due to #23949.
I omitted x86-freebsd-none and powerpc-freebsd-none because these will be
dropped in FreeBSD 15.0 anyway, so there's no point in us spending resources on
those now.
There's not really any point in targeting *-windows-(gnu,msvc) when not linking
libc, so add entries for *-windows-(gnu,msvc) that actually link libc, and
change the old non-libc entries to *-windows-none.
Also add missing aarch64-windows-(none,msvc) and thumb-windows-(none,msvc)
entries. thumb-windows-gnu is disabled for now due to #24016.
Each target can opt into different sets of legalize features.
By performing these transformations before liveness, instructions
that become unreferenced will have up-to-date liveness information.
This is equivalent to `array_elem_val`, and doing that conversion in
Sema (seems reasonable since it's just a simple branch) is much easier
for the self-hosted x86_64 backend then actually handling this case.
Because we don't pass -fqemu and -fwasmtime on aarch64-linux, we're just
spending a bunch of time compiling all these module tests only to not even run
them. x86_64-linux already covers both compiling and running them.
Pointers to thread-local variables do not have their addresses known
until runtime, so it is nonsensical for them to be comptime-known. There
was logic in the compiler which was essentially attempting to treat them
as not being comptime-known despite the pointer being an interned value.
This was a bit of a mess, the check was frequent enough to actually show
up in compiler profiles, and it was very awkward for backends to deal
with, because they had to grapple with the fact that a "constant" they
were lowering might actually require runtime operations.
So, instead, do not consider these pointers to be comptime-known in
*any* way. Never intern such a pointer; instead, when the address of a
threadlocal is taken, emit an AIR instruction which computes the pointer
at runtime. This avoids lots of special handling for TLVs across
basically all codegen backends; of all somewhat-functional backends, the
only one which wasn't improved by this change was the LLVM backend,
because LLVM pretends this complexity around threadlocals doesn't exist.
This change simplifies Sema and codegen, avoids a potential source of
bugs, and potentially improves Sema performance very slightly by
avoiding a non-trivial check on a hot path.
In the case where a declaration has no type annotation, the interaction
between resolution of `nav_ty` and `nav_val` is a little fiddly because
of the fact that resolving `nav_val` actually implicitly resolves the
type as well. This means `nav_ty` never gets an opporunity to mark its
dependency on the `nav_val`. So, `ensureNavValUpToDate` needs to be the
one to do it. It can't do it too early, though; otherwise, our marking
of dependees as out-of-date/up-to-date will go wrong.
Resolves: #23959
In a compiler built with debug extensions, pass `--debug-incremental` to
spawn the "incremental debug server". This is a TCP server exposing a
REPL which allows querying a bunch of compiler state, some of which is
stored only when that flag is passed. Eventually, this will probably
move into `std.zig.Server`/`std.zig.Client`, but this is easier to work
with right now. The easiest way to interact with the server is `telnet`.
Reduced number of runners from 9 to 6.
This number is the total physical memory (251G) divided by the number of
runners we have active (6).
see previous commit 5b9e528bc5
GitHub have introduced an absolutely baffling feature where users can
use Copilot to take their simple explanation of a bug, and reword it
into a multi-paragraph monologue with no interesting details and added
false information, while also potentially ignoring issue templates.
So far, GitHub has not provided a way to block this feature at the
repository or organisation level, so for now, this is the only way to
prevent users from filing LLM-generated slop.
Related: https://github.com/orgs/community/discussions/159749
The doc comment here agreed with the implementation, but not with *any*
`Step` which populates a `GeneratedFile`, where they are treated as
cwd-relative. This is the obvious correct choice, because these paths
usually come from joining onto a cache root, and those are cwd-relative
if not absolute.
This was a pre-existing bug, but #23836 caused it to trigger more often,
because the compiler now commonly passes the local cache directory to
the build runner process as a relative path where it was previously an
absolute path.
Resolves: #23954
37a9a4e accidentally turned paths `b/[hash]/` into `b[hash]/` in the
global cache. This doesn't technically break anything, but it pollutes
the global cache directory. Sorry about that one!
This was an unintentional regression in 23c8175 which meant that
backwards-incompatible ZIR changes would have caused compiler crashes if
old caches were present.
Right now, if you override the build root with `--build-root`, then
`Run` steps can fail to execute because of incorrect path handling in
the compiler: `std.process.Child` gets a cwd-relative path, but also has
its cwd set to the build root. The latter behavior is really weird; it
doesn't match my expectations, nor does it match how we spawn child
`zig` processes. So, this commit makes the child process inherit the
build runner's cwd, as `LazyPath.getPath2` *expects* it to.
After investigating, this behavior dates all the way back to 2017; it
was introduced in 4543413. So, there isn't any clear/documented reason
for this; it should be safe to revert, since under the modern `LazyPath`
system it is strictly a bug AFAICT.
* libc: implement common `abs` for various integer sizes
* libc: move imaxabs to inttypes.zig and don't use cInclude
* libc: delete `fabs` c implementations because already implemented in compiler_rt
* libc: export functions depending on the target libc
Previously all the functions that were exported were handled equally,
though some may exist and some not inside the same file. Moving the
checks inside the file allows handling different functions differently
* remove empty ifs in inttypes
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
* remove empty ifs in stdlib
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
* libc: use `@abs` for the absolute value calculation
---------
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
Nothing interesting here; literally just the bare minimum so I can work on this
on and off in a branch without worrying about merge conflicts in the non-backend
code.
I only wanted to fix a bug originally, but this logic was kind of a
rat's nest. But now... okay, it still *is*, but it's now a slightly more
navigable nest, with cute little signs occasionally, painted by adorable
rats desparately trying to follow the specification.
Hopefully #3806 comes along at some point to simplify this logic a
little.
Resolves: #23139
This prevents symbols from these libraries from polluting the dynamic symbol
tables of binaries built with Zig. The downside is that we no longer deduplicate
the symbols at run time due to weak linkage.
Closes#7935.
Closes#13303.
Closes#19342.
This commit makes some big changes to how we track state for Zig source
files. In particular, it changes:
* How `File` tracks its path on-disk
* How AstGen discovers files
* How file-level errors are tracked
* How `builtin.zig` files and modules are created
The original motivation here was to address incremental compilation bugs
with the handling of files, such as #22696. To fix this, a few changes
are necessary.
Just like declarations may become unreferenced on an incremental update,
meaning we suppress analysis errors associated with them, it is also
possible for all imports of a file to be removed on an incremental
update, in which case file-level errors for that file should be
suppressed. As such, after AstGen, the compiler must traverse files
(starting from analysis roots) and discover the set of "live files" for
this update.
Additionally, the compiler's previous handling of retryable file errors
was not very good; the source location the error was reported as was
based only on the first discovered import of that file. This source
location also disappeared on future incremental updates. So, as a part
of the file traversal above, we also need to figure out the source
locations of imports which errors should be reported against.
Another observation I made is that the "file exists in multiple modules"
error was not implemented in a particularly good way (I get to say that
because I wrote it!). It was subject to races, where the order in which
different imports of a file were discovered affects both how errors are
printed, and which module the file is arbitrarily assigned, with the
latter in turn affecting which other files are considered for import.
The thing I realised here is that while the AstGen worker pool is
running, we cannot know for sure which module(s) a file is in; we could
always discover an import later which changes the answer.
So, here's how the AstGen workers have changed. We initially ensure that
`zcu.import_table` contains the root files for all modules in this Zcu,
even if we don't know any imports for them yet. Then, the AstGen
workers do not need to be aware of modules. Instead, they simply ignore
module imports, and only spin off more workers when they see a by-path
import.
During AstGen, we can't use module-root-relative paths, since we don't
know which modules files are in; but we don't want to unnecessarily use
absolute files either, because those are non-portable and can make
`error.NameTooLong` more likely. As such, I have introduced a new
abstraction, `Compilation.Path`. This type is a way of representing a
filesystem path which has a *canonical form*. The path is represented
relative to one of a few special directories: the lib directory, the
global cache directory, or the local cache directory. As a fallback, we
use absolute (or cwd-relative on WASI) paths. This is kind of similar to
`std.Build.Cache.Path` with a pre-defined list of possible
`std.Build.Cache.Directory`, but has stricter canonicalization rules
based on path resolution to make sure deduplicating files works
properly. A `Compilation.Path` can be trivially converted to a
`std.Build.Cache.Path` from a `Compilation`, but is smaller, has a
canonical form, and has a digest which will be consistent across
different compiler processes with the same lib and cache directories
(important when we serialize incremental compilation state in the
future). `Zcu.File` and `Zcu.EmbedFile` both contain a
`Compilation.Path`, which is used to access the file on-disk;
module-relative sub paths are used quite rarely (`EmbedFile` doesn't
even have one now for simplicity).
After the AstGen workers all complete, we know that any file which might
be imported is definitely in `import_table` and up-to-date. So, we
perform a single-threaded graph traversal; similar to what
`resolveReferences` plays for `AnalUnit`s, but for files instead. We
figure out which files are alive, and which module each file is in. If a
file turns out to be in multiple modules, we set a field on `Zcu` to
indicate this error. If a file is in a different module to a prior
update, we set a flag instructing `updateZirRefs` to invalidate all
dependencies on the file. This traversal also discovers "import errors";
these are errors associated with a specific `@import`. With Zig's
current design, there is only one possible error here: "import outside
of module root". This must be identified during this traversal instead
of during AstGen, because it depends on which module the file is in. I
tried also representing "module not found" errors in this same way, but
it turns out to be much more useful to report those in Sema, because of
use cases like optional dependencies where a module import is behind a
comptime-known build option.
For simplicity, `failed_files` now just maps to `?[]u8`, since the
source location is always the whole file. In fact, this allows removing
`LazySrcLoc.Offset.entire_file` completely, slightly simplifying some
error reporting logic. File-level errors are now directly built in the
`std.zig.ErrorBundle.Wip`. If the payload is not `null`, it is the
message for a retryable error (i.e. an error loading the source file),
and will be reported with a "file imported here" note pointing to the
import site discovered during the single-threaded file traversal.
The last piece of fallout here is how `Builtin` works. Rather than
constructing "builtin" modules when creating `Package.Module`s, they are
now constructed on-the-fly by `Zcu`. The map `Zcu.builtin_modules` maps
from digests to `*Package.Module`s. These digests are abstract hashes of
the `Builtin` value; i.e. all of the options which are placed into
"builtin.zig". During the file traversal, we populate `builtin_modules`
as needed, so that when we see this imports in Sema, we just grab the
relevant entry from this map. This eliminates a bunch of awkward state
tracking during construction of the module graph. It's also now clearer
exactly what options the builtin module has, since previously it
inherited some options arbitrarily from the first-created module with
that "builtin" module!
The user-visible effects of this commit are:
* retryable file errors are now consistently reported against the whole
file, with a note pointing to a live import of that file
* some theoretical bugs where imports are wrongly considered distinct
(when the import path moves out of the cwd and then back in) are fixed
* some consistency issues with how file-level errors are reported are
fixed; these errors will now always be printed in the same order
regardless of how the AstGen pass assigns file indices
* incremental updates do not print retryable file errors differently
between updates or depending on file structure/contents
* incremental updates support files changing modules
* incremental updates support files becoming unreferenced
Resolves: #22696
This function was broken, because it took ownership of the buffer on
error *sometimes*, in a way which the caller could not tell. Rather than
trying to be clever, it's easier to just follow the same interface as
all other `addFilePost` methods, and not take ownership of the path.
This is a breaking change. The next commits will apply it to the
compiler, which is the only user of this function in the ziglang/zig
repository.
This code applies to ~any POSIX OS where we don't link libc. For example, it'll
be useful for FreeBSD and NetBSD.
As part of this, move std.os.linux.pie to std.pie since there's really nothing
Linux-specific about what that file is doing.
* sysident_assym.h was manually expanded.
* The ELF_NOTE_MARCH_DESC and ELF_NOTE_MARCH_DESCSZ macros will be defined
by the compiler.
* Legacy .init/.fini stuff was removed.
* GCJ nonsense was removed.
* mips64/mips64el on NetBSD are soft float; we have no support for this yet.
* powerpc64 does not appear to be a thing.
* riscv32/riscv64 have not seen official releases yet.
We want the latest unversioned inclusion that fits the target version. This
theoretically matters because it might have a different global vs weak linkage
compared to an older inclusion.
Evaluate all child processes in the temporary directory, and use
`std.fs.path.relative` to make every other path relative to that child
cwd instead of our cwd.
Resolves: #22119
It's incorrect to ever set `include_reference_trace` here, because the
compiler has already given or not given reference traces depending on
the `-freference-trace` option propagated to the compiler process by
`std.Build.Step.Compile`.
Perhaps in future we could make the compiler always return the reference
trace when communicating over the compiler protocol; that'd be more
versatile than the current behavior, because the build runner could, for
instance, show a reference trace on-demand without having to even invoke
the compiler. That seems really useful, since the reference trace is
*often* unnecessary noise, but *sometimes* essential. However, we don't
live in that world right now, so passing the option here doesn't make
sense.
Resolves: #23415
To an average user, it may be unclear why these notes are not just in
the reference trace; that's because they are more important, because
they are inline calls through which comptime values may propagate. There
are now 3 possible wordings for this note:
* "called at comptime here"
* "called inline here"
* "generic function instantiated here"
An alternative could be these wordings:
* "while analyzing comptime call here"
* "while analyzing inline call here"
* "while analyzing generic instantiation here"
I'm not sure which is better -- but this commit is certainly better than
status quo.
Inline calls which happened in the erroring `AnalUnit` still show as
error notes, because they tend to make very important context (e.g. to
see how comptime values propagate through them). However, "earlier"
inline calls are still useful to see to understand how something is
being referenced, so we should include them in the reference trace.
When `-freference-trace` is not passed, we want to show exactly one
reference trace. Previously, we set the reference trace root in `Sema`
iff there were no other failed analyses. However, this results in an
arbitrary error being the one with the reference trace after error
sorting. It is also incompatible with incremental compilation, where
some errors might be unreferenced. Instead, set the field on all
analysis errors, and decide in `Compilation.getAllErrorsAlloc` which
reference trace[s] to actually show.
Error messages never contain periods or grave accents.
Get rid of the periods and use apostrophes instead in
probably the only two error messages that had them.
* ucontext_t ptr is 8-byte aligned instead of 16-byte aligned which @alignCast() expects
* Retrieve pc address from ucontext_t since unwind_state is null
* Work around __mcontext_data being written incorrectly by the kernel
These symbols are defined in the statically-linked startup code. The real
libc.so.7 contains strong references to them, so they need to be put into the
dynamic symbol table.
Textual PTX is just assembly language like any other. And if we do ever add
support for emitting PTX object files after reverse engineering the bytecode
format, we'd be emitting ELF files like the CUDA toolchain. So there's really no
need for a special ObjectFormat tag here, nor linker code that treats it as a
distinct format.
* NT_FREEBSD_ABI_TAG was manually adjusted from using a hardcoded value to using
__FreeBSD_version which will be defined by the compiler.
* GCJ stuff was removed.
* HAVE_CTORS definitions were removed.
* Introduce common `bzero` libc implementation.
* Update test name according to review
Co-authored-by: Linus Groh <mail@linusgroh.de>
* address code review
- import common implementation when musl or wasi is included
- don't use `c_builtins`, use `@memset`
* bzero calling conv to .c
* Apply review
Co-authored-by: Veikka Tuominen <git@vexu.eu>
---------
Co-authored-by: Linus Groh <mail@linusgroh.de>
Co-authored-by: Veikka Tuominen <git@vexu.eu>
For C code the macros SIGRTMIN and SIGRTMAX provide these values. In
practice what looks like a constant is actually provided by a libc call.
So the Zig implementations are explicitly function calls.
glibc (and Musl) export a run-time minimum "real-time" signal number,
based on how many signals are reserved for internal implementation details
(generally threading). In practice, on Linux, sigrtmin() is 35 on glibc
with the older LinuxThread and 34 with the newer NPTL-based
implementation. Musl always returns 35. The maximum "real-time" signal
number is NSIG - 1 (64 on most Linux kernels, but 128 on MIPS).
When not linking a C Library, Zig can report the full range of "rt"
signals (none are reserved by Zig).
Fixes#21189
If clang encountered bad imports, the depfile will not be generated. It
doesn't make sense to warn the user in this case. In fact,
`FileNotFound` is never worth warning about here; it just means that
the file we were deleting to save space isn't there in the first place!
If the missing file actually affected the compilation (e.g. another
process raced to delete it for some reason) we would already error in
the normal code path which reads these files, so we can safely omit the
warning in the `FileNotFound` case always, only warning when the file
might still exist.
To see what this fixes, create the following file...
```c
#include <nonexist>
```
...and run `zig build-obj` on it. Before this commit, you will get a
redundant warning; after this commit, that warning is gone.
Most of these are gated by -Dtest-extra-targets because:
* We don't really have CI resources to spare at the moment.
* They're relatively niche if you're not on a musl distro.
* And the few musl distros that exist don't support all these targets.
* Quite a few of them are broken and need investigating.
x86_64-linux-musl and aarch64-linux-musl are not gated as they're the most
common targets that people will be running dynamic musl on, so we'll want to
have some bare minimum coverage of those.
It remains 1 everywhere else.
Also remove some code that allowed setting the libc++ ABI version on the
Compilation since there are no current plans to actually expose this in the CLI.
* When storing a zero-bit type, we should short-circuit almost
immediately. Zero-bit stores do not need to do any work.
* The bit size computation for arrays is incorrect; the `abiSize` will
already be appropriately aligned, but the logic to do so here
incorrectly assumes that zero-bit types have an alignment of 0. They
don't; their alignment is 1.
Resolves: #21202Resolves: #21508Resolves: #23307
There were several bugs with the synchronization here; most notably an
ABA problem which was causing #21663. I fixed that and some other
issues, and took the opportunity to get rid of the `.seq_cst` orderings
from this file. I'm at least relatively sure my new orderings are correct.
Co-authored-by: achan1989 <achan1989@gmail.com>
Resolves: #21663
This is generally ill-advised, but can be useful in some niche situations where
the caveats don't apply. It might also be useful when providing a libc.txt that
points to Eyra.
I changed to `wasm/abi.zig`, this design is certainly better than the previous one. Still there is some conflict of interest between llvm and self-hosted backend, better design will appear when abi tests will be tested with self-hosted.
Resolves: #23304Resolves: #23305
Dunno why the MIPS signal numbers are different, or why Zig had them
already special cased, but wrong.
We have the technology to test these constants. We should use it.
All the existing code that manipulates `ucontext_t` expects there to be a
glibc-compatible sigmask (1024-bit). The `ucontext_t` struct need to be
cleaned up so the glibc-dependent format is only used when linking
glibc/musl library, but that is a more involved change.
In practice, no Zig code looks at the sigset field contents, so it just
needs to be the right size.
By returning an initialized sigset (instead of taking the set as an output
parameter), these functions can be used to directly initialize the `mask`
parameter of a `Sigaction` instance.
When linking a libc, Zig should defer to the C library for sigset
operations. The pre-filled constants signal sets (empty_sigset,
filled_sigset) are not compatible with C library initialization, so remove
them and use the runtime `sigemptyset` and `sigfillset` methods to
initialize any sigset.
Unify the C library sigset_t and Linux native sigset_t and the accessor
operations.
Add tests that the various sigset_t operations are working. And clean up
existing tests a bit.
The kernel ABI sigset_t is smaller than the glibc one. Define the
right-sized sigset_t and fixup the sigaction() wrapper to leverage it.
The Sigaction wrapper here is not an ABI, so relax it (drop the "extern"
and the "restorer" fields), the existing `k_sigaction` is the ABI
sigaction struct.
Linux defines `sigset_t` with a c_ulong, so it can be 32-bit or 64-bit,
depending on the platform. This can make a difference on big-endian
systems.
Patch up `ucontext_t` so that this change doesn't impact its layout.
AFAICT, its currently the glibc layout.
Export the sigset_t ops (sigaddset, etc) from the C library. Don't rely
on the linux.zig defintions (which will be defined to use the kernel ABI).
Move Darwin sigset and NSIG declarations into darwin.zig. Remove
extraneous (?) sigaddset. The C library sigaddset can reject some signals
being added, so need to defer to it.
* Indexing zero-bit types should not produce AIR indexing instructions
* Getting a runtime-known element pointer from a many-pointer should
check that the many-pointer is not comptime-only
Resolves: #23405
`writeCValue` already emits a cast; including another here is, in fact,
invalid, and emits errors under MSVC. Probably this code was originally
added to work around the incorrect `.Initializer` location which was
fixed in the previous commit.
The last Intel Quark MCU was released in 2015. Quark was announced to be EOL in
2019, and stopped shipping entirely in 2022.
The OS tag was only meaningful for Intel's weird fork of Linux 3.8.7 with a
special ABI that differs from the regular i386 System V ABI; beyond that, the
CPU itself is just a plain old P54C (i586). We of course keep support for the
CPU itself, just not Intel's Linux fork.
These backends are completely unusable at the moment; they can produce neither
assembly files nor object files. So give a nicer error when users try to use
them.
Aside from adding comments to document the logic in `Cache.Manifest.hit`
better, this commit fixes two serious bugs.
The first, spotted by Andrew, is that when upgrading from a shared to an
exclusive lock on the manifest file, we do not seek it back to the
start. This is a simple fix.
The second is more subtle, and has to do with the computation of file
digests. Broadly speaking, the goal of the main loop in `hit` is to
iterate the files listed in the manifest file, and check if they've
changed, based on stat and a file hash. While doing this, the
`bin_digest` field of `std.Build.Cache.File`, which is initially
`undefined`, is populated for all files, either straight from the
manifest (if the stat matches) or recomputed from the file on-disk. This
file digest is then used to update `man.hash.hasher`, which is building
the final hash used as, for instance, the output directory name when the
compiler emits into the cache directory. When `hit` returns a cache
miss, it is expected that `man.hash.hasher` includes the digests of all
"initial files"; that is, those which have been already added with e.g.
`addFilePath`, but not those which will later be added with
`addFilePost` (even though the manifest file has told us about some such
files). Previously, `hit` was using the `unhit` function to do this in a
few cases. However, this is incorrect, because `hit` assumes that all
files already have their `bin_digest` field populated; this function is
only valid to call *after* `hit` returns. Instead, we need to actually
compute the hashes which haven't yet been populated. Even if this logic
has been working, there was still a bug here, because we called `unhit`
when upgrading from a shared to an exclusive lock, writing the
(potentially `undefined`) file digests, but the loop itself writes the
file digests *again*! All in all, the hashing logic here was actually
incredibly broken.
I've taken the opportunity to restructure this section of the code into
what I think is a more readable format. A new function,
`hitWithCurrentLock`, uses the open manifest file to try and find a
cache hit. It returns a tagged union which, in the miss case, tells the
caller (`hit`) how many files already have their hash populated. This
avoids redundant work recomputing the same hash multiple times in
situations where the lock needs upgrading. This also eliminates the
outer loop from `hit`, which was a little confusing because it iterated
no more than twice!
The bugs fixed here could manifest in several different ways depending
on how contended file locks were satisfied. Most notably, on a cache
miss, the Zig compiler might have written the compilation output to the
incorrect directory (because it incorrectly constructed a hash using
`undefined` or repeated file digests), resulting in all future hits on
this manifest causing `error.FileNotFound`. This is #23110. I have been
able to reproduce #23110 on `master`, and have not been able to after
this commit, so I am relatively sure this commit resolves that issue.
Resolves: #23110
This allows emitting object files for s390x-zos (GOFF) and powerpc(64)-aix
(XCOFF).
Note that GOFF emission in LLVM is still being worked on upstream for LLVM 21;
the resulting object files are useless right now. Also, -fstrip is required, or
LLVM will SIGSEGV during DWARF emission.
* Accept -fsanitize-c=trap|full in addition to the existing form.
* Accept -f(no-)sanitize-trap=undefined in zig cc.
* Change type of std.Build.Module.sanitize_c to std.zig.SanitizeC.
* Add some missing Compilation.Config fields to the cache.
Closes#23216.
* This has not seen meaningful development for about a decade.
* The Linux kernel port was never upstreamed.
* The glibc port was never upstreamed.
* GCC 15.1 recently deprecated support it.
It may still make sense to support an ILP32 ABI on AArch64 more broadly (which
we already have the Abi.ilp32 tag for), but, to the extent that it even existed
in any "official" sense, the *GNU* ILP32 ABI is certainly dead.
This is fairly straightforward; the actual compiler changes are limited
to the CLI, since `Compilation` already supports this combination.
A new `std.Build` API is introduced to allow representing this. By
passing the `emit_object` option to `std.Build.addTest`, you get a
`Step.Compile` which emits an object file; you can then use that as you
would any other object, such as either installing it for external use,
or linking it into another step.
A standalone test is added to cover the build system API. It builds a
test into an object, and links it into a final executable, which it then
runs.
Using this build system mechanism prevents the build system from
noticing that you're running a `zig test`, so the build runner and test
runner do not communicate over stdio. However, that's okay, because the
real-world use cases for this feature don't want to do that anyway!
Resolves: #23374
Compile log output is now separated based on the `AnalUnit` which
perfomred the `@compileLog` call, so that we can omit the output for
unreferenced ("dead") units. The units are also sorted when collecting
the `ErrorBundle`, so that compile logs are always printed in a
consistent order, like compile errors are. This is important not only
for incremental compilation, but also for parallel analysis.
Resolves: #23609
* Fix compile error in Fuzzer web-ui
The error was:
```
error: expected type '?mem.Alignment', found 'comptime_int'
```
* Apply suggestions from code review
`.of` call is shorter and clearer
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
---------
Co-authored-by: Alex Rønne Petersen <alex@alexrp.com>
Before:
❯ zig cc main.c -target x86_64-linux-musl && musl-ldd ./a.out
musl-ldd: ./a.out: Not a valid dynamic program
❯ zig cc main.c -target x86_64-linux-musl -static && musl-ldd ./a.out
musl-ldd: ./a.out: Not a valid dynamic program
❯ zig cc main.c -target x86_64-linux-musl -dynamic && musl-ldd ./a.out
musl-ldd: ./a.out: Not a valid dynamic program
After:
❯ zig cc main.c -target x86_64-linux-musl && musl-ldd ./a.out
musl-ldd: ./a.out: Not a valid dynamic program
❯ zig cc main.c -target x86_64-linux-musl -static && musl-ldd ./a.out
musl-ldd: ./a.out: Not a valid dynamic program
❯ zig cc main.c -target x86_64-linux-musl -dynamic && musl-ldd ./a.out
/lib/ld-musl-x86_64.so.1 (0x72c10019e000)
libc.so => /lib/ld-musl-x86_64.so.1 (0x72c10019e000)
Closes#11909.
They are, themselves, static libraries even if the resulting artifact strictly
speaking requires dynamic linking to the corresponding system DLLs to run. Note,
though, that there's no libc-provided dynamic linker on Windows like on POSIX,
so this isn't particularly problematic.
This matches x86_64-w64-mingw32-gcc behavior.
std.crypto: add constant-time codecs
Add constant-time hex/base64 codecs designed to process cryptographic
secrets, adapted from libsodium's implementations.
Introduce a `crypto.codecs` namespace for crypto-related encoders and
decoders. Move ASN.1 codecs to this namespace.
This will also naturally accommodate the proposed PEM codecs.
This lays the groundwork for #2879. This library will be built and linked when a
static libc is going to be linked into the compilation. Currently, that means
musl, wasi-libc, and MinGW-w64. As a demonstration, this commit removes the musl
C code for a few string functions and implements them in libzigc. This means
that those libzigc functions are now load-bearing for musl and wasi-libc.
Note that if a function has an implementation in compiler-rt already, libzigc
should not implement it. Instead, as we recently did for memcpy/memmove, we
should delete the libc copy and rely on the compiler-rt implementation.
I repurposed the existing "universal libc" code to do this. That code hadn't
seen development beyond basic string functions in years, and was only usable-ish
on freestanding. I think that if we want to seriously pursue the idea of Zig
providing a freestanding libc, we should do so only after defining clear goals
(and non-goals) for it. See also #22240 for a similar case.
The code was using u32 and usize interchangably, which doesn't work on
64-bit systems. This:
`pub const sigset_t = [1024 / 32]u32;`
is not consistent with this:
`const shift = @as(u5, @intCast(s & (usize_bits - 1)));`
However, normal signal numbers are less than 31, so the bad math doesn't matter much. Also, despite support for 1024 signals in the set, only setting signals between 1 and NSIG (which is mostly 65, but sometimes 128) is defined. The existing tests only exercised signal numbers in the first 31 bits so they didn't trip over this:
The C library `sigaddset` will return `EINVAL` if given an out of bounds signal number. I made the Zig code just silently ignore any out of bounds signal numbers.
Moved all the `sigset` related declarations next to each in the source, too.
The `filled_sigset` seems non-standard to me. I think it is meant to be used like `empty_sigset`, but it only contains 31 set signals, which seems wrong (should be 64 or 128, aka `NSIG`). It's also unused. The oddly named but similar `all_mask` is used (by posix.zig) but sets all 1024 bits (which I understood to be undefined behavior but seems to work just fine). For comparison the musl `sigfillset` fills in 65 bits or 128 bits.
* Oops, I accidentally disabled most of them.
* Cleanup some workarounds for now closed issues.
* Test binary operations with more scalar integer types.
Linux kernel syscalls expect to be given the number of bits of sigset that
they're built for, not the full 1024-bit sigsets that glibc supports.
I audited the other syscalls in here that use `sigset_t` and they're all
using `NSIG / 8`.
Fixes#12715
Translate-c didn't properly account for C macro functions having parameter names that are C keywords. So something like `#define FOO(float) ((float) + 10)` would've been interpreted as casting `+10` to a `float` type, instead of adding `10` to the parameter `float`.
An example of a real-world macro function like this is SDL3's `SDL_DEFINE_AUDIO_FORMAT` from `SDL_audio.h`, which uses `signed` as a parameter.
This started failing in LLVM 20:
test
+- test-stack-traces
+- check error union switch with call operand (ReleaseSafe llvm) failure
error:
========= expected this stdout: =========
error: TheSkyIsFalling
source.zig:3:5: [address] in [function]
return error.TheSkyIsFalling;
^
========= but found: ====================
error: TheSkyIsFalling
source.zig:13:27: [address] in [function]
error.NonFatal => return,
^
We build zig2.c and compiler_rt.c with -O0 but then proceed to link with -O3.
So zig2.o and compiler_rt.o will have references to ubsan-rt symbols, but the
-O3 causes the compiler to not link ubsan-rt. We don't actually need the safety
here, so just explicitly disable ubsan.
These started failing with LLVM 20 for unclear reasons:
test-std
└─ run test std-mips64-linux.4.19...6.13.4-gnuabi64.2.28-mips64r2-Debug-libc 2798/2878 passed, 2 failed, 78 skipped
error: 'posix.test.test.link with relative paths' failed: expected 2, found 0
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/testing.zig:103:17: 0x1d9e5bf in expectEqualInner__anon_47031 (test)
return error.TestExpectedEqual;
^
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/posix/test.zig:311:9: 0x3650f57 in test.link with relative paths (test)
try testing.expectEqual(@as(@TypeOf(nstat.nlink), 2), nstat.nlink);
^
error: 'posix.test.test.linkat with different directories' failed: expected 2, found 0
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/testing.zig:103:17: 0x1d9e5bf in expectEqualInner__anon_47031 (test)
return error.TestExpectedEqual;
^
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/posix/test.zig:355:9: 0x3653377 in test.linkat with different directories (test)
try testing.expectEqual(@as(@TypeOf(nstat.nlink), 2), nstat.nlink);
^
error: while executing test 'zig.system.darwin.macos.test.detect', the following test command failed:
qemu-mips64 -L /opt/glibc/mips64-linux-gnu-n64 /home/alexrp/Source/ziglang/zig-llvm20/.zig-cache/o/22a8c3762ea56ae3a674fa9ad15f6657/test --seed=0xa1dbb43c --cache-dir=/home/alexrp/Source/ziglang/zig-llvm20/.zig-cache --listen=-
test-std
└─ run test std-mips64-linux.4.19...6.13.4-gnuabi64.2.28-mips64r2-Debug-libc 2798/2878 passed, 1 failed, 79 skipped
error: 'posix.test.test.linkat with different directories' failed: expected 2, found 0
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/testing.zig:103:17: 0x1d9e22f in expectEqualInner__anon_47031 (test)
return error.TestExpectedEqual;
^
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/posix/test.zig:356:9: 0x3650b47 in test.linkat with different directories (test)
try testing.expectEqual(@as(@TypeOf(nstat.nlink), 2), nstat.nlink);
^
error: while executing test 'zig.system.darwin.macos.test.detect', the following test command failed:
qemu-mips64 -L /opt/glibc/mips64-linux-gnu-n64 /home/alexrp/Source/ziglang/zig-llvm20/.zig-cache/o/22a8c3762ea56ae3a674fa9ad15f6657/test --seed=0xa1dbb43c --cache-dir=/home/alexrp/Source/ziglang/zig-llvm20/.zig-cache --listen=-
Unfortunately, neither GDB nor LLDB want to play nice with qemu-mips64(el) at
the moment, so I can't easily debug these failures.
LLVM 20 started tail-calling it in some of our test cases, resulting in:
error: AndMyCarIsOutOfGas
/home/alexrp/Source/ziglang/zig-llvm20/repro.zig:2:5: 0x103ef9d in main (repro)
return error.TheSkyIsFalling;
^
/home/alexrp/Source/ziglang/zig-llvm20/repro.zig:6:5: 0x103efa5 in main (repro)
return error.AndMyCarIsOutOfGas;
^
/home/alexrp/Source/ziglang/zig-llvm20/lib/std/start.zig:656:37: 0x103ee83 in posixCallMainAndExit (repro)
const result = root.main() catch |err| {
^
instead of the expected:
error: AndMyCarIsOutOfGas
/home/alexrp/Source/ziglang/zig-llvm20/repro.zig:2:5: 0x103f00d in main (repro)
return error.TheSkyIsFalling;
^
/home/alexrp/Source/ziglang/zig-llvm20/repro.zig:6:5: 0x103f015 in main (repro)
return error.AndMyCarIsOutOfGas;
^
/home/alexrp/Source/ziglang/zig-llvm20/repro.zig:11:9: 0x103f01d in main (repro)
try bar();
^
Also fix a bunch of cases where we didn't toggle features off if the relevant
leaf isn't available, and switch XCR0 checks to a packed struct.
Closes#23385.
I'm not actually aware of any distro where the name is wine64, so just use wine
in all cases. As part of this, I also fixed the architecture checks to match
reality.
Closes#23411.
* If a function prototype is declarated inside a function, do not
translate it to a top-level extern function declaration. Similar to
extern local variable, just wrapped it into a block-local struct.
* Add a new extern_local_fn tag of aro_translate_c node for present
extern local function declaration.
* When a function body has a C function prototype declaration, it adds
an extern local function declaration. Subsequent function references
will look for this function declaration.
`wasm2c` uses an interesting mechanism to "fake" the existence of cache
directories. However, `wasi_snapshot_preview1_fd_seek` was not correctly
integrated with this system, so previously crashed when run on a file in
a cache directory due to trying to call `fseek` on a `FILE *` which was
`NULL`.
* When saving bigint limbs, we gave the iovec the wrong length, meaning
bigint data (and the following string and compile error data) was corrupted.
* When updating a stale ZOIR cache, we failed to truncate the file, so
just wrote more bytes onto the end of the stale cache.
This is actually completely well-defined. The resulting slice always has
0 elements. The only disallowed case is casting *to* a slice of a
zero-bit type, because in that case, you cna't figure out how many
destination elements to use (and there's *no* valid destination length
if the source slice corresponds to more than 0 bits).
When decoding the literals section of a compressed block, the length of
the regenerated size of the literals must be checked against the buffer
literals are decoded into.
`--fetch` flag now has additional optional parameter, which specifies
how lazy dependencies should be fetched:
* `needed` — lazy dependencies are fetched only if they are required
for current build configuration to work. Default and works same
as old `--fetch` flag.
* `all` — lazy dependencies are always fetched. If `--system` flag
is used after that, it's guaranteed that **any** build configuration
will not require additional download of dependencies during build.
Helpful for distro packagers and CI systems:
https://www.github.com/ziglang/zig/issues/14597#issuecomment-1426827495
If none is passed, behaviour is same as if `needed` was passed.
Signed-off-by: Eric Joldasov <bratishkaerik@landless-city.net>
We already do these on the x86_64-linux machines. They're fairly costly, and it
seems very unlikely to me that they'll uncover issues that wouldn't be uncovered
on x86_64-linux.
This change fixes false-positive cache hits for run steps that get run
with different sets of environment variables due the the environment map
being excluded from the cache hash.
Context:
- https://blog.rust-lang.org/2024/09/04/cve-2024-43402.html
- https://github.com/rust-lang/rust/pull/129962
Note that the Rust test case for this checks that it executes the batch file successfully with the proper mitigation in place, while the Zig test case expects a FileNotFound error. This is because of a PATHEXT optimization that Zig does, and that Rust doesn't do because Rust doesn't do PATHEXT appending (it only appends .exe specifically). See the added comment for more details.
Add a test for std.fs.File's `setEndPos` (which is a simple wrapper around
`std.posix.ftruncate`) to exercise some success and failure paths.
Explicitly check that the `ftruncate` length isn't negative when
interpreted as a signed value. This avoids having to decode overloaded
`EINVAL` errors.
Add errno handling to Windows path to map INVALID_PARAMETER to FileTooBig.
Fixes#22960
Adds a CreateProcessFlags packed struct for all the possible flags to
CreateProcessW on windows. In addition, propagates the existing
`start_suspended` option in std.process.Child which was previously only
used on Darwin. Also adds a `create_no_window` option to std.process.Child
which is a commonly used flag for launching console executables on
windows without causing a new console window to "pop up".
This PR consistently maps .ACCES into AccessDenied and .PERM into
PermissionDenied. AccessDenied is returned if the file mode bit
(user/group/other rwx bits) disallow access (errno was `EACCES`).
PermissionDenied is returned if something else denies access (errno was
`EPERM`) (immutable bit, SELinux, capabilities, etc). This somewhat
subtle distinction is a POSIX thing.
Most of the change is updating std.posix Error Sets to contain both
errors, and then propagating the pair up through caller Error Sets.
Fixes#16782
Use error.AccessDenied for permissions (rights) failures on Wasi
(`EACCES`) and error.PermissionDenied (`EPERM`) for systemic failures.
And pass-through underlying Wasi errors (PermissionDenied or AccessDenied)
without mapping.
Windows defines an `ACCESS_DENIED` error code. There is no
PERMISSION_DENIED (or its equivalent) which seems to only exist on POSIX
systems. Fix a couple Windows calls code to return `error.AccessDenied`
for `ACCESS_DENIED` and to stop mapping AccessDenied into
PermissionDenied.
The "musl" part of the Zig target triples `wasm32-wasi-musl` and
`wasm32-emscripten-musl` refers to the libc, not really the ABI.
For WASM, most LLVM-based tooling uses `wasm32-wasi`, which is
normalized into `wasm32-unknown-wasi`, with an implicit `-unknown` and
without `-musl`.
Similarly, Emscripten uses `wasm32-unknown-emscripten` without `-musl`.
By using `-unknown` instead of `-musl` we get better compatibility with
external tooling.
While it is not allowed for a function coercion to change whether a
function is generic, it *is* okay to make existing concrete parameters
of a generic function also generic, or vice versa. Either of these cases
implies that the result is a generic function, so comptime type checks
will happen when the function is ultimately called.
Resolves: #21099
Emscripten currently implements `emscripten_return_address()` by calling
out into JavaScript and parsing a stack trace, which introduces
significant overhead that we would prefer to avoid in release builds.
This is especially problematic for allocators because the generic parts
of `std.mem.Allocator` make frequent use of `@returnAddress`, even
though very few allocator implementations even observe the return
address, which makes allocators nigh unusable for performance-critical
applications like games if the compiler is unable to devirtualize the
allocator calls.
Both sliceTo and indexOfScalarPos use SIMD when available to speed up the search. On my x86_64 machine, this leads to getenvW being around 2-3x faster overall.
Additionally, any future improvements to sliceTo/indexOfScalarPos will benefit getenvW.
Too many bugs have been found with `truncate` at this point, so it was
rewritten from scratch.
Based on the doc comment, the utility of `convertToTwosComplement` over
`r.truncate(a, .unsigned, bit_count)` is unclear and it has a subtle
behavior difference that is almost certainly a bug, so it was deleted.
This code previously added 4 NUL code units, but that was likely due to a misinterpretation of this part of the CreateProcess documentation:
> A Unicode environment block is terminated by four zero bytes: two for the last string, two more to terminate the block.
(four zero *bytes* means *two* zero code units)
Additionally, the second zero code unit is only actually needed when the environment is empty due to a quirk of the CreateProcess implementation. In the case of a non-empty environment, there always ends up being two trailing NUL code units since one will come after the last environment variable in the block.
[Incremental provided buffer
consumption](https://github.com/axboe/liburing/wiki/What's-new-with-io_uring-in-6.11-and-6.12#incremental-provided-buffer-consumption)
support is added in kernel 6.12.
IoUring.BufferGroup will now use incremental consumption whenever
kernel supports it.
Before, provided buffers are wholly consumed when picked. Each cqe
points to the different buffer. With this, cqe points to the part of the
buffer. Multiple cqe's can reuse same buffer.
Appropriate sizing of buffers becomes less important.
There are slight changes in BufferGroup interface (it now needs to track
current receive point for each buffer). Init requires allocator
instead of buffers slice, it will allocate buffers slice and head
pointers slice. Get and put now requires cqe becasue there we have
information will the buffer be reused.
ring.cmd_sock is generic socket operation. Two most common uses are
setsockopt and getsockopt. This provides same interface as posix
versions of this methods.
libring has also [sqe_set_flags](https://man7.org/linux/man-pages/man3/io_uring_sqe_set_flags.3.html)
method. Adding that in our io_uring_sqe. Adding sqe.link_next method for setting most common flag.
consttest_filters=b.option([]const[]constu8,"test-filter","Skip tests that do not match any filter")orelse&[0][]constu8{};
consttest_target_filters=b.option([]const[]constu8,"test-target-filter","Skip tests whose target triple do not match any filter")orelse&[0][]constu8{};
consttest_slow_targets=b.option(bool,"test-slow-targets","Enable running module tests for targets that have a slow compiler backend")orelsefalse;
consttest_extra_targets=b.option(bool,"test-extra-targets","Enable running module tests for additional targets")orelsefalse;
Error Return Traces are enabled by default in {#link|Debug#} and {#link|ReleaseSafe#} builds and disabled by default in {#link|ReleaseFast#} and {#link|ReleaseSmall#} builds.
Error Return Traces are enabled by default in {#link|Debug#} builds and disabled by default in {#link|ReleaseFast#}, {#link|ReleaseSafe#} and {#link|ReleaseSmall#} builds.
</p>
<p>
There are a few ways to activate this error return tracing feature:
This is usually <code>src/main.zig</code> but depends on what file is built.
<li>{#syntax#}@import("builtin"){#endsyntax#} - Target-specific information. The command <code>zig build-exe --show-builtin</code> outputs the source to stdout for reference.</li>
<li>{#syntax#}@import("root"){#endsyntax#} - Alias for the root module. In typical project structures, this means it refers back to <code>src/main.zig</code>.
<li>If a call to {#syntax#}@import{#endsyntax#} is analyzed, the file being imported is analyzed.</li>
<li>If a type (including a file) is analyzed, all {#syntax#}comptime{#endsyntax#}, {#syntax#}usingnamespace{#endsyntax#}, and {#syntax#}export{#endsyntax#} declarations within it are analyzed.</li>
<li>If a type (including a file) is analyzed, all {#syntax#}comptime{#endsyntax#} and {#syntax#}export{#endsyntax#} declarations within it are analyzed.</li>
<li>If a type (including a file) is analyzed, and the compilation is for a {#link|test|Zig Test#}, and the module the type is within is the root module of the compilation, then all {#syntax#}test{#endsyntax#} declarations within it are also analyzed.</li>
<li>If a reference to a named declaration (i.e. a usage of it) is analyzed, the declaration being referenced is analyzed. Declarations are order-independent, so this reference may be above or below the declaration being referenced, or even in another file entirely.</li>
</ul>
@@ -7346,29 +7322,6 @@ fn readU32Be() u32 {}
</ul>
</td>
</tr>
<tr>
<thscope="row">
<pre>{#syntax#}async{#endsyntax#}</pre>
</th>
<td>
{#syntax#}async{#endsyntax#} can be used before a function call to get a pointer to the function's frame when it suspends.
<ul>
<li>See also {#link|Async Functions#}</li>
</ul>
</td>
</tr>
<tr>
<thscope="row">
<pre>{#syntax#}await{#endsyntax#}</pre>
</th>
<td>
{#syntax#}await{#endsyntax#} can be used to suspend the current function until the frame provided after the {#syntax#}await{#endsyntax#} completes.
{#syntax#}await{#endsyntax#} copies the value returned from the target function's frame to the caller.
<ul>
<li>See also {#link|Async Functions#}</li>
</ul>
</td>
</tr>
<tr>
<thscope="row">
<pre>{#syntax#}break{#endsyntax#}</pre>
@@ -7786,18 +7739,6 @@ fn readU32Be() u32 {}
</ul>
</td>
</tr>
<tr>
<thscope="row">
<pre>{#syntax#}usingnamespace{#endsyntax#}</pre>
</th>
<td>
{#syntax#}usingnamespace{#endsyntax#} is a top-level declaration that imports all the public declarations of the operand,
which must be a struct, union, or enum, into the current scope.
<spanclass="tooltip-content">Sum across all threads of the time spent in this pipeline component</span>
</th>
<thscope="col"class="tooltip">Real Time
<spanclass="tooltip-content">Wall-clock time elapsed between the start and end of this compilation phase</span>
</th>
<thscope="col">Compilation Phase</th>
</tr>
</thead>
<tbody>
<tr>
<thscope="row"class="tooltip">Parsing
<spanclass="tooltip-content"><code>tokenize</code> converts a file of Zig source code into a sequence of tokens, which are then processed by <code>Parse</code> into an Abstract Syntax Tree (AST).</span>
<spanclass="tooltip-content">Tokenization, parsing, and lowering of Zig source files to a high-level IR.<br><br>Starting from module roots, every file theoretically accessible through a chain of <code>@import</code> calls is processed. Individual source files are processed serially, but different files are processed in parallel by a thread pool.<br><br>The results of this phase of compilation are cached on disk per source file, meaning the time spent here is typically only relevant to "clean" builds.</span>
</th>
</tr>
<tr>
<thscope="row"class="tooltip">AST Lowering
<spanclass="tooltip-content"><code>AstGen</code> converts a file's AST into a high-level SSA IR named Zig Intermediate Representation (ZIR). The resulting ZIR code is cached on disk to avoid, for instance, re-lowering all source files in the Zig standard library each time the compiler is invoked.</span>
</th>
<td><slotname="cpu-time-astgen"></slot></td>
</tr>
<tr>
<thscope="row"class="tooltip">Semantic Analysis
<spanclass="tooltip-content"><code>Sema</code> interprets ZIR to perform type checking, compile-time code execution, and type resolution, collectively termed "semantic analysis". When a runtime function body is analyzed, it emits Analyzed Intermediate Representation (AIR) code to be sent to the next pipeline component. Semantic analysis is currently entirely single-threaded.</span>
<spanclass="tooltip-content">Semantic analysis, code generation, and linking, at the granularity of individual declarations (as opposed to whole source files).<br><br>These components are run in parallel with one another. Semantic analysis is almost always the bottleneck, as it is complex and currently can only run single-threaded.<br><br>This phase completes when a work queue empties, but semantic analysis may add work by one declaration referencing another.<br><br>This is the main phase of compilation, typically taking significantly longer than File Lower (even in a clean build).</span>
</th>
</tr>
<tr>
<thscope="row"class="tooltip">Code Generation
<spanclass="tooltip-content"><code>CodeGen</code> converts AIR from <code>Sema</code> into machine instructions in the form of Machine Intermediate Representation (MIR). This work is usually highly parallel, since in most cases, arbitrarily many functions can be run through <code>CodeGen</code> simultaneously.</span>
</th>
<td><slotname="cpu-time-codegen"></slot></td>
</tr>
<tr>
<thscope="row"class="tooltip">Linking
<spanclass="tooltip-content"><code>link</code> converts MIR from <code>CodeGen</code>, as well as global constants and variables from <code>Sema</code>, and places them in the output binary. MIR is converted to a finished sequence of real instruction bytes.<br><br>When using the LLVM backend, most of this work is instead deferred to the "LLVM Emit" phase.</span>
</th>
<td><slotname="cpu-time-link"></slot></td>
</tr>
<trclass="llvm-only">
<thclass="empty-cell"></th>
<tdclass="empty-cell"></td>
<td><slotname="real-time-llvm-emit"></slot></td>
<thscope="row"class="tooltip">LLVM Emit
<spanclass="tooltip-content"><b>Only applicable when using the LLVM backend.</b><br><br>Conversion of generated LLVM bitcode to an object file, including any optimization passes.<br><br>When using LLVM, this phase of compilation is typically the slowest by a significant margin. Unfortunately, the Zig compiler implementation has essentially no control over it.</span>
</th>
</tr>
<tr>
<thclass="empty-cell"></th>
<tdclass="empty-cell"></td>
<td><slotname="real-time-link-flush"></slot></td>
<thscope="row"class="tooltip">Linker Flush
<spanclass="tooltip-content">Finalizing the emitted binary, and ensuring it is fully written to disk.<br><br>When using LLD, this phase represents the entire linker invocation. Otherwise, the amount of work performed here is dependent on details of Zig's linker implementation for the particular output format, but typically aims to be fairly minimal.</span>
</th>
</tr>
</tbody>
</table>
<detailsclass="section">
<summary>Files</summary>
<tableclass="time-stats">
<thead>
<tr>
<thscope="col">File</th>
<thscope="col">Semantic Analysis</th>
<thscope="col">Code Generation</th>
<thscope="col">Linking</th>
<thscope="col">Total</th>
</tr>
</thead>
<!-- HTML does not allow placing a 'slot' inside of a 'tbody' for backwards-compatibility
reasons, so we unfortunately must template on the `id` here. -->
<tbodyid="fileTableBody"></tbody>
</table>
</details>
<detailsclass="section">
<summary>Declarations</summary>
<tableclass="time-stats">
<thead>
<tr>
<thscope="col">File</th>
<thscope="col">Declaration</th>
<thscope="col"class="tooltip">Analysis Count
<spanclass="tooltip-content">The number of times the compiler analyzed some part of this declaration. If this is a function, <code>inline</code> and <code>comptime</code> calls to it are <i>not</i> included here. Typically, this value is approximately equal to the number of instances of a generic declaration.</span>
</th>
<thscope="col">Semantic Analysis</th>
<thscope="col">Code Generation</th>
<thscope="col">Linking</th>
<thscope="col">Total</th>
</tr>
</thead>
<!-- HTML does not allow placing a 'slot' inside of a 'tbody' for backwards-compatibility
reasons, so we unfortunately must template on the `id` here. -->
if(watch)fatal("using '--webui' and '--watch' together is not yet supported; consider omitting '--watch' in favour of the web UI \"Rebuild\" button",.{});
if(builtin.single_threaded)fatal("'--webui' is not yet supported on single-threaded hosts",.{});
}
conststderr:std.fs.File=.stderr();
constttyconf=get_tty_conf(color,stderr);
switch(ttyconf){
.no_color=>trygraph.env_map.put("NO_COLOR","1"),
@@ -353,7 +380,7 @@ pub fn main() !void {
.data=buffer.items,
.flags=.{.exclusive=true},
})catch|err|{
fatal("unable to write configuration results to '{}{s}': {s}",.{
fatal("unable to write configuration results to '{f}{s}': {s}",.{
.err,.warning=>trywriter.print("expected '<filename>', found '{s}' (resource type '{s}' can't use raw data)",.{self.fmtToken(source),self.extra.resource.nameForErrorDisplay()}),
.note=>trywriter.print("if '{s}' is intended to be a filename, it must be specified as a quoted string literal",.{self.fmtToken(source)}),
.err,.warning=>trywriter.print("expected '<filename>', found '{f}' (resource type '{s}' can't use raw data)",.{self.fmtToken(source),self.extra.resource.nameForErrorDisplay()}),
.note=>trywriter.print("if '{f}' is intended to be a filename, it must be specified as a quoted string literal",.{self.fmtToken(source)}),
.hint=>return,
},
.id_must_be_ordinal=>{
trywriter.print("id of resource type '{s}' must be an ordinal (u16), got '{s}'",.{self.extra.resource.nameForErrorDisplay(),self.fmtToken(source)});
trywriter.print("id of resource type '{s}' must be an ordinal (u16), got '{f}'",.{self.extra.resource.nameForErrorDisplay(),self.fmtToken(source)});
},
.name_or_id_not_allowed=>{
trywriter.print("name or id is not allowed for resource type '{s}'",.{self.extra.resource.nameForErrorDisplay()});
returnwriter.print("string with id {d} (0x{X}) already defined for language {}",.{self.extra.string_and_language.id,self.extra.string_and_language.id,language});
returnwriter.print("string with id {d} (0x{X}) already defined for language {f}",.{self.extra.string_and_language.id,self.extra.string_and_language.id,language});
},
.note=>returnwriter.print("previous definition of string with id {d} (0x{X}) here",.{self.extra.string_and_language.id,self.extra.string_and_language.id}),
trywriter.print("unable to open file '{s}': {s}",.{strings[self.extra.file_open_error.filename_string_index],@tagName(self.extra.file_open_error.err)});
tryerror_handler.emitMessage(self.arena,.err,"automatic include path detection is not supported for target '{s}'",.{@tagName(self.target_machine_type)});
},
error.MsvcIncludesNotFound=>{
tryerror_handler.emitMessage(self.arena,.err,"MSVC include paths could not be automatically detected",.{});
},
error.MingwIncludesNotFound=>{
tryerror_handler.emitMessage(self.arena,.err,"MinGW include paths could not be automatically detected",.{});
},
}
tryerror_handler.emitMessage(self.arena,.note,"to disable auto includes, use the option /:auto-includes none",.{});
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