Motiejus Jakštys b3d106ec97 astgen: fix int_type signedness and struct layout
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>
2026-02-13 20:28:25 +00:00
2026-02-13 11:37:57 +02:00
fmt
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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.

Description
Replacing zig1.wasm with a C program (see stage0/).
Readme MIT 388 MiB
Languages
Zig 96.3%
C 2.7%
C++ 0.6%
Python 0.1%