Re: feature/asan-gc-poisoning: Better memory checks using AddressSanitizer

[Eli Zaretskii]

> From: Vibhav Pant <vibhavp@gmail.com>
> Date: Sun, 18 Dec 2022 01:38:33 +0530
> 
> Unless there are any objections, I plan to merge this branch into master 
> today. 

No objections, but please make the ASAN_POISON_* functions macros that
expand either to corresponding asan_poison_* functions or to nothing,
depending on whether GC_ASAN_POISON_* is defined.  That's because I'd
like to avoid unnecessary overhead of a function call in a "normal"
build without optimizations.

Thanks.