fix #30543

diff --git a/Zend/zend_execute_API.c b/Zend/zend_execute_API.c
index 5a8f380de858616827a731262ff6019c847a2132..ac029eafba1488b202419aa859af7cb3f53a1bf2 100644 (file)
--- a/Zend/zend_execute_API.c
+++ b/Zend/zend_execute_API.c
@@ -886,6 +886,10 @@ ZEND_API int zend_lookup_class(char *name, int name_length, zend_class_entry ***
        zval *exception;
        char dummy = 1;
        
+       if (name == NULL) {
+               return FAILURE;
+       }
+
        lc_name = do_alloca(name_length + 1);
        zend_str_tolower_copy(lc_name, name, name_length);