Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
  Clarify that preg_match_all() cannot return null

Author: nikic

ext/pcre/php_pcre.c

@@ -1206,7 +1206,7 @@ PHPAPI void php_pcre_match_impl(pcre_cache_entry *pce, zend_string *subject_str,
 	if (subpats != NULL) {
 		subpats = zend_try_array_init(subpats);
 		if (!subpats) {
-			return;
+			RETURN_THROWS();
 		}
 	}
 

ext/pcre/php_pcre.stub.php

@@ -6,7 +6,7 @@
 function preg_match(string $pattern, string $subject, &$matches = null, int $flags = 0, int $offset = 0): int|false {}
 
 /** @param array $matches */
-function preg_match_all(string $pattern, string $subject, &$matches = null, int $flags = 0, int $offset = 0): int|false|null {}
+function preg_match_all(string $pattern, string $subject, &$matches = null, int $flags = 0, int $offset = 0): int|false {}
 
 /**
  * @param int $count

ext/pcre/php_pcre_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 62ab532c890b5421bfe8b784c803829cf71a1423 */
+ * Stub hash: bc6f31ac17d4f5d1a60dd3dad5f671058f40a224 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_preg_match, 0, 2, MAY_BE_LONG|MAY_BE_FALSE)
 	ZEND_ARG_TYPE_INFO(0, pattern, IS_STRING, 0)
@@ -9,13 +9,7 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_preg_match, 0, 2, MAY_BE_LONG|MA
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, offset, IS_LONG, 0, "0")
 ZEND_END_ARG_INFO()
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_preg_match_all, 0, 2, MAY_BE_LONG|MAY_BE_FALSE|MAY_BE_NULL)
-	ZEND_ARG_TYPE_INFO(0, pattern, IS_STRING, 0)
-	ZEND_ARG_TYPE_INFO(0, subject, IS_STRING, 0)
-	ZEND_ARG_INFO_WITH_DEFAULT_VALUE(1, matches, "null")
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, flags, IS_LONG, 0, "0")
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, offset, IS_LONG, 0, "0")
-ZEND_END_ARG_INFO()
+#define arginfo_preg_match_all arginfo_preg_match
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_preg_replace, 0, 3, MAY_BE_STRING|MAY_BE_ARRAY|MAY_BE_NULL)
 	ZEND_ARG_TYPE_MASK(0, pattern, MAY_BE_STRING|MAY_BE_ARRAY, NULL)