[Bug libstdc++/47354] bitmap_allocator free_list::_M_get never locks mutex

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47354

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-01-19 00:59:41 UTC ---
Great.