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

[laurent.alfonsi at st dot com]

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

--- Comment #7 from Laurent Aflonsi <laurent.alfonsi at st dot com> 2012-04-10 
15:28:07 UTC ---
Ping ? Here is the patch proposed.

============================
--- libstdc++-v3/src/mt_allocator.cc    2011/08/04 07:56:49    2064
+++ libstdc++-v3/src/mt_allocator.cc    2012/04/03 08:45:48    2551
@@ -47,7 +47,9 @@
       if (_M_thread_freelist_array)
     {
       __gthread_key_delete(_M_key);
+      _M_key = NULL;
       ::operator delete(static_cast<void*>(_M_thread_freelist_array));
+      _M_thread_freelist = NULL;
     }
     }
   };
@@ -639,7 +641,10 @@
         }
         }

-        __gthread_setspecific(freelist._M_key, (void*)_M_id);
+        if (freelist._M_key)
+          { 
+            __gthread_setspecific(freelist._M_key, (void*)_M_id);
+          }
       }
     return _M_id >= _M_options._M_max_threads ? 0 : _M_id;
       }
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