[Bug fortran/93599] [9/10 regression] Bug in fortran asynchronous I/O wait function

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93599

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Created attachment 47800
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47800&action=edit
Possible fix

Here is something that Nicolas and I came up with.  The theory is that
pthread_cond_wait can get a spurious interrupt once in a blue moon which
previosly led to the macro becoming a no-op.

I have tested this to around 8 Million invocations of the test program, but
this is not a guarantee...

Incidentially, this also appears to fix the issue that helgrind reported.
It passes regression testing.

Is there a reasonable way to test this further?