diff options
| -rw-r--r-- | Zend/zend_builtin_functions.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Zend/zend_builtin_functions.c b/Zend/zend_builtin_functions.c index 0447917e7e..ba53261077 100644 --- a/Zend/zend_builtin_functions.c +++ b/Zend/zend_builtin_functions.c @@ -616,6 +616,9 @@ static void is_a_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool only_subclass) } else { if (only_subclass) { instance_ce = Z_OBJCE_PP(obj)->parent; + if (!instance_ce) { + RETURN_FALSE; + } } else { instance_ce = Z_OBJCE_PP(obj); } |