diff -uNr php-5.2.13/ext/gmp/gmp.c php-5.2.13.orig//ext/gmp/gmp.c
--- php-5.2.13/ext/gmp/gmp.c	2010-07-27 11:39:15.000000000 +0200
+++ php-5.2.13.orig//ext/gmp/gmp.c	2010-07-27 11:37:40.000000000 +0200
@@ -1396,7 +1396,7 @@
 
 		GMPG(rand_initialized) = 1;
 	}
-	mpz_urandomb(*gmpnum_result, GMPG(rand_state), GMP_ABS (limiter) * __GMP_BITS_PER_MP_LIMB);
+	mpz_urandomb(*gmpnum_result, GMPG(rand_state), GMP_ABS (limiter) * GMP_LIMB_BITS);
 
 	ZEND_REGISTER_RESOURCE(return_value, gmpnum_result, le_gmp);
 }