std_heap = mmalloc_get_default_md();
xbt_assert(std_heap != NULL);
-#if defined HAVE_GNU_LD && !defined MMALLOC_WANT_OVERRIDE_LEGACY
+#if 0 && defined HAVE_GNU_LD && !defined MMALLOC_WANT_OVERRIDE_LEGACY
/* use the system malloc for the model-checker data */
mc_heap = NULL;
#else