[Bug sanitizer/95137] Sanitizers seem to be missing support for coroutines

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95137

--- Comment #30 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Rafael Avila de Espindola from comment #29)
> Created attachment 48771 [details]
> Testcase without lambda coroutines
> 
> I modified the testcase to also build with clang and not depend on async
> lambdas. This still reproduces the problem with gcc with undefined behaviour
> sanitizer, but works with with clang and sanitizers and gcc with valgrind.

thanks, I think I have a fix for this locally - but not ready to post just yet.