This is the in-house patch which changes the build option DUMP_CORE to prevent Samba
to dump the core on internal error conditions (i.e. # of groups > NGROUP_MAX).
...see the original comment which remains in code.
--- a/source3/include/local.h 2014-06-22 23:03:27.000000000 -0700
+++ samba-3.6.24/source3/include/local.h 2014-10-29 10:00:48.268346403 -0700
@@ -142,7 +142,7 @@
/* do you want to dump core (carefully!) when an internal error is
encountered? Samba will be careful to make the core file only
accessible to root */
-#define DUMP_CORE 1
+#define DUMP_CORE 0
/* shall we support browse requests via a FIFO to nmbd? */
#define ENABLE_FIFO 1