--- src/lmathlib.c.orig	Mon Jan 12 14:06:55 2015
+++ src/lmathlib.c	Mon Jan 12 14:07:08 2015
@@ -26,11 +26,11 @@
 #if !defined(l_rand)		/* { */
 #if defined(LUA_USE_POSIX)
 #define l_rand()	random()
-#define l_srand(x)	srandom(x)
+#define l_srand(x)	srandom_deterministic(x)
 #define L_RANDMAX	2147483647	/* (2^31 - 1), following POSIX */
 #else
 #define l_rand()	rand()
-#define l_srand(x)	srand(x)
+#define l_srand(x)	srand_deterministic(x)
 #define L_RANDMAX	RAND_MAX
 #endif
 #endif				/* } */