Re: [Gc] Address Sanitizer reports stack underflow

* Ivan Maidanski:

> AddressSanitizer, MemorySanitizer are supported now by bdwgc (master
> branch) if compiled by clang. This commit fixed the issues outlined by
> Florian -
> https://github.com/ivmai/bdwgc/commit/ce75cf115b8739632fd54bf4a64745749ab=
13299
> =A0
>
> UnexpectedBehaviorSanittizer is also supported by bdwgc (both gcc and cla=
ng).

Thanks for working on this, Ivan.