[Bug target/125312] [16/17 Regression] x86_64-w64-mingw32: weak_ptr::lock() / shared_from_this() multi-thread stress fails

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125312

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #8)
> On IRC Liu Hao found the problem.

And Pekka Seppänen made the initial connection to the atomic builtin configure
changes.