Promote warning to exception in unserialize()

Author: kocsismate

ext/standard/tests/serialize/max_depth.phpt

@@ -8,8 +8,17 @@ function create_nested_data($depth, $prefix, $suffix, $inner = 'i:0;') {
 }
 
 echo "Invalid max_depth:\n";
-var_dump(unserialize('i:0;', ['max_depth' => 'foo']));
-var_dump(unserialize('i:0;', ['max_depth' => -1]));
+try {
+    unserialize('i:0;', ['max_depth' => 'foo']);
+} catch (TypeError $exception) {
+    echo $exception->getMessage() . "\n";
+}
+
+try {
+    unserialize('i:0;', ['max_depth' => -1]);
+} catch (ValueError $exception) {
+    echo $exception->getMessage() . "\n";
+}
 
 echo "Array:\n";
 var_dump(unserialize(
@@ -95,12 +104,8 @@ var_dump(is_array(unserialize(
 ?>
 --EXPECTF--
 Invalid max_depth:
-
-Warning: unserialize(): max_depth should be int in %s on line %d
-bool(false)
-
-Warning: unserialize(): max_depth cannot be negative in %s on line %d
-bool(false)
+max_depth should be int
+max_depth cannot be negative
 Array:
 bool(true)
 

ext/standard/var.c

@@ -1003,7 +1003,7 @@ static void php_var_serialize_intern(smart_str *buf, zval *struc, php_serialize_
 
 				if (ce != PHP_IC_ENTRY && zend_hash_str_exists(&ce->function_table, "__sleep", sizeof("__sleep")-1)) {
 					zval retval, tmp;
-					
+
 					Z_ADDREF_P(struc);
 					ZVAL_OBJ(&tmp, Z_OBJ_P(struc));
 
@@ -1138,7 +1138,7 @@ PHPAPI void php_var_serialize_destroy(php_serialize_data_t d) {
 	}
 }
 
-/* {{{ proto string serialize(mixed variable)
+/* {{{ proto string|null serialize(mixed variable)
    Returns a string representation of variable (which can later be unserialized) */
 PHP_FUNCTION(serialize)
 {
@@ -1156,7 +1156,7 @@ PHP_FUNCTION(serialize)
 
 	if (EG(exception)) {
 		smart_str_free(&buf);
-		RETURN_FALSE;
+		return;
 	}
 
 	if (buf.s) {
@@ -1231,13 +1231,11 @@ PHP_FUNCTION(unserialize)
 		max_depth = zend_hash_str_find_deref(Z_ARRVAL_P(options), "max_depth", sizeof("max_depth") - 1);
 		if (max_depth) {
 			if (Z_TYPE_P(max_depth) != IS_LONG) {
-				php_error_docref(NULL, E_WARNING, "max_depth should be int");
-				RETVAL_FALSE;
+				zend_type_error("max_depth should be int");
 				goto cleanup;
 			}
 			if (Z_LVAL_P(max_depth) < 0) {
-				php_error_docref(NULL, E_WARNING, "max_depth cannot be negative");
-				RETVAL_FALSE;
+				zend_value_error("max_depth cannot be negative");
 				goto cleanup;
 			}