https://github.com/emeryberger/Heap-Layers/commit/60f7ace6152badd411b1fc566a2b58dc737a8372

--- src/heaplayers/wrappers/gnuwrapper.cpp	2012-06-12 05:53:26.000000000 +0200
+++ src/heaplayers/wrappers/gnuwrapper.cpp.oden	2012-09-25 09:45:37.570069441 +0200
@@ -65,7 +65,14 @@ extern "C" {
   static void * (*old_realloc_hook)(void *ptr, size_t size, const void *caller);
   static void * (*old_memalign_hook)(size_t alignment, size_t size, const void *caller);
 
-  void (* __malloc_initialize_hook) (void) = my_init_hook;
+// From GNU libc 2.14 this macro is defined, to declare
+// hook variables as volatile. Define it as empty for
+// older glibc versions
+#ifndef __MALLOC_HOOK_VOLATILE
+ #define __MALLOC_HOOK_VOLATILE
+#endif
+
+  void (*__MALLOC_HOOK_VOLATILE __malloc_initialize_hook) (void) = my_init_hook;
 
   static void my_init_hook (void) {
     // Store the old hooks.