[Bug libfortran/66756] libgfortran: ThreadSanitizer: lock-order-inversion

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66756

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |---
           Severity|normal                      |enhancement

--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Well, if it is indeed a serious problem, we can re-open
as an enhancement request.

Unfortunately, I don't know if it is possible to shut up the
thread sanitizer somehow.

A possiblity would be to lock the unit only after the global
lock has been released, and possibly keep around the global
lock for longer. If we still are in the process of opening the
file in the original thread, then there should be no problem
(at least I hope so...)