[Bug libstdc++/52604] mt allocator crashes on multi-threaded

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52604

--- Comment #16 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-13 
10:29:02 UTC ---
Yes, please go ahead, mainline only for now (PR remains open) with Jon's fix to
the ChangeLog and also, between parentheses (__freelist::~__freelist).