Fixed bug #75514 mt_rand returns value outside [$min,$max]+ on 32-bit

Author: remicollet

ext/standard/mt_rand.c

@@ -260,15 +260,15 @@ PHPAPI zend_long php_mt_rand_range(zend_long min, zend_long max)
  * rand() allows min > max, mt_rand does not */
 PHPAPI zend_long php_mt_rand_common(zend_long min, zend_long max)
 {
-	zend_long n;
+	uint32_t n;
 
 	if (BG(mt_rand_mode) == MT_RAND_MT19937) {
 		return php_mt_rand_range(min, max);
 	}
 
 	/* Legacy mode deliberately not inside php_mt_rand_range()
 	 * to prevent other functions being affected */
-	n = (zend_long)php_mt_rand() >> 1;
+	n = php_mt_rand() >> 1;
 	RAND_RANGE_BADSCALING(n, min, max, PHP_MT_RAND_MAX);
 
 	return n;

ext/standard/tests/math/bug75514.phpt

@@ -0,0 +1,12 @@
+--TEST--
+Bug #75514 mt_rand returns value outside [$min,$max]
+--FILE--
+<?php
+mt_srand(0, MT_RAND_PHP);
+var_dump(mt_rand(0,999999999), mt_rand(0,999));
+?>
+===Done===
+--EXPECT--
+int(448865905)
+int(592)
+===Done===