- fix #49274, filter_var does not accept object without a toString implementation

ext/filter/filter.c

@@ -379,6 +379,19 @@ static void php_zval_filter(zval **value, long filter, long flags, zval *options
 	if (copy) {
 		SEPARATE_ZVAL(value);
 	}
+
+	/* #49274, fatal error with object without a toString method
+	  Fails nicely instead of getting a recovarable fatal error. */
+	if (Z_TYPE_PP(value) == IS_OBJECT) {
+		zend_class_entry *ce;
+
+		ce = Z_OBJCE_PP(value);
+		if (!ce->__tostring) {
+			ZVAL_FALSE(*value);
+			return;
+		}
+	}
+
 	/* Here be strings */
 	convert_to_string(*value);
 

ext/filter/tests/bug49274.phpt

@@ -0,0 +1,10 @@
+--TEST--
+#49274, fatal error when an object does not implement toString
+--SKIPIF--
+<?php if (!extension_loaded("filter")) die("skip"); ?>
+--FILE--
+<?php
+var_dump(filter_var(new stdClass, FILTER_VALIDATE_EMAIL));
+?>
+--EXPECTF--	
+bool(false)