Fix GH-10292 1st param of mt_srand() has UNKNOWN default on PHP <8.3

Closes GH-10429

Author: kocsismate

NEWS

@@ -5,6 +5,10 @@ PHP                                                                        NEWS
 - Core:
   . Fixed incorrect check condition in ZEND_YIELD. (nielsdos)
 
+- Standard:
+  . Fixed bug GH-10292 (Made the default value of the first param of srand() and
+    mt_srand() unknown). (kocsismate)
+
 02 Feb 2023, PHP 8.1.15
 
 - Apache:

ext/standard/basic_functions.stub.php

@@ -1548,10 +1548,10 @@ function quoted_printable_encode(string $string): string {}
 
 /* mt_rand.c */
 
-function mt_srand(int $seed = 0, int $mode = MT_RAND_MT19937): void {}
+function mt_srand(int $seed = UNKNOWN, int $mode = MT_RAND_MT19937): void {}
 
 /** @alias mt_srand */
-function srand(int $seed = 0, int $mode = MT_RAND_MT19937): void {}
+function srand(int $seed = UNKNOWN, int $mode = MT_RAND_MT19937): void {}
 
 function rand(int $min = UNKNOWN, int $max = UNKNOWN): int {}
 

ext/standard/basic_functions_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 87ed2b04b9b46ce3df78d6f9d6d62bd6b2ae8fe5 */
+ * Stub hash: eb6a3a2e3cf8f62e768d5d4968606438819e6cf0 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_set_time_limit, 0, 1, _IS_BOOL, 0)
 	ZEND_ARG_TYPE_INFO(0, seconds, IS_LONG, 0)
@@ -1813,7 +1813,7 @@ ZEND_END_ARG_INFO()
 #define arginfo_quoted_printable_encode arginfo_base64_encode
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_mt_srand, 0, 0, IS_VOID, 0)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, seed, IS_LONG, 0, "0")
+	ZEND_ARG_TYPE_INFO(0, seed, IS_LONG, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, mode, IS_LONG, 0, "MT_RAND_MT19937")
 ZEND_END_ARG_INFO()
 

ext/standard/tests/general_functions/rand.phpt

@@ -13,10 +13,21 @@ var_dump(rand(0,3));
 
 var_dump(srand());
 var_dump(srand(-1));
+try {
+    srand(mode: MT_RAND_MT19937);
+} catch (Error $e) {
+    echo $e->getMessage() . "\n";
+}
 
 var_dump(mt_srand());
 var_dump(mt_srand(-1));
 
+try {
+    mt_srand(mode: MT_RAND_MT19937);
+} catch (Error $e) {
+    echo $e->getMessage() . "\n";
+}
+
 var_dump(getrandmax());
 
 var_dump(mt_getrandmax());
@@ -32,8 +43,10 @@ int(%i)
 int(%d)
 NULL
 NULL
+srand(): Argument #1 ($seed) must be passed explicitly, because the default value is not known
 NULL
 NULL
+mt_srand(): Argument #1 ($seed) must be passed explicitly, because the default value is not known
 int(%d)
 int(%d)
 Done