[Bug gcov-profile/49484] gcov crash if two(or more) forks happen at the same time

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49484

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-18 11:49:58 UTC ---
Created attachment 26363
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26363
draft patch

Draft patch that doesn't work because we do not unconditionally
provide __GTHREAD_MUTEX_INIT_FUNCTION.