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-rw-r--r--Zend/zend_API.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 106f493440..71f3a504ff 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -2118,6 +2118,9 @@ ZEND_API zend_bool zend_is_callable_ex(zval *callable, uint check_flags, char **
zend_function *fptr_local;
zval **zobj_ptr_local;
+ if (callable_name) {
+ *callable_name = NULL;
+ }
if (callable_name_len == NULL) {
callable_name_len = &callable_name_len_local;
}