[Bug libstdc++/52839] double free or corruption running tr1/.../default_weaktoshared.exe

[amodra at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52839

--- Comment #13 from Alan Modra <amodra at gmail dot com> 2012-04-04 23:02:34 UTC ---
Huh, so glibc has a powerpc specific pthread_once, and that one has a different
bug.  Lack of lwsync before atomic_increment (once_control);