macho: Pass sections by pointer when slicing names#12175
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andrewrk merged 1 commit intoziglang:masterfrom Jul 20, 2022
Merged
macho: Pass sections by pointer when slicing names#12175andrewrk merged 1 commit intoziglang:masterfrom
andrewrk merged 1 commit intoziglang:masterfrom
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We were accidentally returning a pointer to stack memory, because these arguments were passed by value. It's just an accident that stage 1 was passing these by reference, so things were alright until stage 3.
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Nice find! I think an important language goal will be having safety for this kind of problem. Possibly by changing aliasing rules and possibly by doing something along the lines of #3180 (comment). |
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Big +1 I have some other crazy ideas in the space I want to try out at some point - Looking forward to the experimental phase. |
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Thought these were fishy in the debug(link) logs:
Turns out, we were accidentally returning a pointer to a parameter - Stage 1 just happened to pass the parameter by reference.
stage3/bin/zig build-exe test3.zig -target x86_64-macos-noneworks on my machine now.One more stepping stone for #12111