[Bug c++/127320] [15/16/17 Regression] coroutine frame refcount (_Coro_frame_refcount) is updated non-atomically by ramp and actor; races when the handle is resumed on another thread from await_suspend

[saxonp at nvidia dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127320

--- Comment #1 from Saxon Parker <saxonp at nvidia dot com> ---
Created attachment 65559
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65559&action=edit
refcount_leak_counter.cpp