[Bug libgomp/58378] Protect libgomp against child process hanging after a Unix fork()

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58378

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Having a pthread_atfork child hook that would do freeing of memory, or
pthread_mutex_init etc. would only make invalid any OpenMP program using fork,
even those that use it correctly.