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stage2: fix a couple off by one errors

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All stage2 tests are passing again in this branch.

Remaining checklist for this branch:
 * get the rest of the zig fmt test cases passing
   - re-enable the translate-c test case that is blocking on this
 * implement the 2 `@panic(TODO)`'s in parse.zig
 * use fn_proto not fn_decl for extern function declarations
This commit is contained in:
Andrew Kelley
2021-02-19 21:47:11 -07:00
parent 5b597a16c6
commit ed1e5cb3f6
3 changed files with 12 additions and 6 deletions
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2
lib/std/zig/ast.zig
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@@ -2566,8 +2566,10 @@ pub const Node = struct {
/// before the final rbrace.
struct_init_comma,
/// `lhs(rhs)`. rhs can be omitted.
/// main_token is the lparen.
call_one,
/// `lhs(rhs,)`. rhs can be omitted.
/// main_token is the lparen.
call_one_comma,
/// `async lhs(rhs)`. rhs can be omitted.
async_call_one,

4
src/astgen.zig
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@@ -901,7 +901,7 @@ fn labeledBlockExpr(
const token_tags = tree.tokens.items(.tag);
const lbrace = main_tokens[block_node];
const label_token = lbrace - 1;
const label_token = lbrace - 2;
assert(token_tags[label_token] == .identifier);
const src = token_starts[lbrace];
@@ -3072,7 +3072,7 @@ fn multilineStringLiteral(
// Count the number of bytes to allocate.
const len: usize = len: {
var tok_i = start;
var len: usize = 0;
var len: usize = end - start + 1;
while (tok_i <= end) : (tok_i += 1) {
// 2 for the '//' + 1 for '\n'
len += tree.tokenSlice(tok_i).len - 3;

12
test/stage2/test.zig
View File

@@ -1088,7 +1088,7 @@ pub fn addCases(ctx: *TestContext) !void {
\\ _ = foo;
\\}
\\extern var foo;
, &[_][]const u8{":4:1: error: unable to infer variable type"});
, &[_][]const u8{":4:8: error: unable to infer variable type"});
}
{
@@ -1194,12 +1194,12 @@ pub fn addCases(ctx: *TestContext) !void {
\\comptime {
\\ foo: while (true) {}
\\}
, &[_][]const u8{":2:5: error: unused while label"});
, &[_][]const u8{":2:5: error: unused while loop label"});
case.addError(
\\comptime {
\\ foo: for ("foo") |_| {}
\\}
, &[_][]const u8{":2:5: error: unused for label"});
, &[_][]const u8{":2:5: error: unused for loop label"});
case.addError(
\\comptime {
\\ blk: {blk: {}}
@@ -1294,6 +1294,10 @@ pub fn addCases(ctx: *TestContext) !void {
,
"",
);
// TODO this should be :8:21 not :8:19. we need to improve source locations
// to be relative to the containing Decl so that they can survive when the byte
// offset of a previous Decl changes. Here the change from 7 to 999 introduces
// +2 to the byte offset and makes the error location wrong by 2 bytes.
case.addError(
\\export fn _start() noreturn {
\\ const y = fibonacci(999);
@@ -1314,7 +1318,7 @@ pub fn addCases(ctx: *TestContext) !void {
\\ );
\\ unreachable;
\\}
, &[_][]const u8{":8:10: error: evaluation exceeded 1000 backwards branches"});
, &[_][]const u8{":8:19: error: evaluation exceeded 1000 backwards branches"});
}
{
var case = ctx.exe("orelse at comptime", linux_x64);