Motiejus Jakštys
c525da4553
- 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>
About
zig0 aspires to be an interpreter of zig 0.15.1 written in C.
This is written with help from LLM:
- Lexer:
- Datastructures 100% human.
- Helper functions 100% human.
- Lexing functions 50/50 human/bot.
- Parser:
- Datastructures 100% human.
- Helper functions 50/50.
- Parser functions 5/95 human/bot.
- AstGen: TBD.
Testing
Quick test:
zig build fmt test
Full test and static analysis with all supported compilers and valgrind (run before commit, takes a while):
zig build -Dvalgrind
Debugging tips
Test runs infinitely? Build the test program executable:
$ zig build test -Dno-exec
And then run it, capturing the stack trace:
gdb -batch \
-ex "python import threading; threading.Timer(1.0, lambda: gdb.post_event(lambda: gdb.execute('interrupt'))).start()" \
-ex run \
-ex "bt full" \
-ex quit \
zig-out/bin/test
You are welcome to replace -ex "bt full" with anything other of interest.