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

[rafael at espindo dot la]

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

Rafael Avila de Espindola <rafael at espindo dot la> changed:

           What    |Removed                     |Added
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  Attachment #48723|0                           |1
        is obsolete|                            |

--- Comment #29 from Rafael Avila de Espindola <rafael at espindo dot la> ---
Created attachment 48771
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48771&action=edit
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.