Fix SIGSEGV because HAS_SRAND didn't check wether the entry existed at

all

diff --git a/ext/standard/rand.c b/ext/standard/rand.c
index cddeca803db4c2809f6f2a20d4bb2118665bc296..108f58a9ad26723a3269c094ee441847008fc63a 100644 (file)
--- a/ext/standard/rand.c
+++ b/ext/standard/rand.c
@@ -36,7 +36,7 @@
 /* an ARRAY of POINTERS, not vice versa */
 php_randgen_entry *php_randgen_entries[PHP_RAND_NUMRANDS];
 
-#define PHP_HAS_SRAND(which)   (php_randgen_entries[which]->srand)
+#define PHP_HAS_SRAND(which)   (php_randgen_entries[which] && php_randgen_entries[which]->srand)
 #define PHP_SRAND(which,seed)  ((*(php_randgen_entries[which]->srand))(seed))
 #define PHP_RAND(which)                        ((*(php_randgen_entries[which]->rand))())
 #define PHP_RANDMAX(which)             (php_randgen_entries[which]->randmax)
@@ -48,6 +48,8 @@ PHP_MINIT_FUNCTION(rand)
 {
        PHP_MINIT(rand_sys)(INIT_FUNC_ARGS_PASSTHRU);
        PHP_MINIT(rand_mt)(INIT_FUNC_ARGS_PASSTHRU);
+       /* lcg not yet implemented */
+       php_randgen_entries[PHP_RAND_LCG] = NULL;
 }
 
 /* TODO: check that this function is called on the start of each script