--- ruby-enterprise-1.8.7-2012.02/source/distro/google-perftools-1.7/src/tcmalloc.cc	2012-02-19 15:09:11.000000000 +0100
+++ ruby-enterprise-1.8.7-2012.02/source/distro/google-perftools-1.7/src/tcmalloc.cc	2012-07-05 13:34:17.677491684 +0200
@@ -1669,5 +1669,5 @@
   MallocHook::InvokeNewHook(result, size);
   return result;
 }
-void *(*__memalign_hook)(size_t, size_t, const void *) = MemalignOverride;
+void *(* volatile __memalign_hook)(size_t, size_t, const void *) = MemalignOverride;
 #endif  // #ifndef TCMALLOC_FOR_DEBUGALLOCATION