[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 #11 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-04-12 16:29:32 UTC ---
In mainline, for x86_64-linux, the below patchlet indeed avoids the valgrind
errors and passes make check, make check-performance.

Index: src/c++98/mt_allocator.cc
===================================================================
--- src/c++98/mt_allocator.cc    (revision 186374)
+++ src/c++98/mt_allocator.cc    (working copy)
@@ -48,6 +48,7 @@
     {
       __gthread_key_delete(_M_key);
       ::operator delete(static_cast<void*>(_M_thread_freelist_array));
+      _M_thread_freelist = 0;
     }
     }
   };