@@ -5454,9 +5454,9 @@ static zend_always_inline uint32_t zend_get_arg_offset_by_name(
54545454 if (EXPECTED (fbc -> type == ZEND_USER_FUNCTION )
54555455 || EXPECTED (fbc -> common .fn_flags & ZEND_ACC_USER_ARG_INFO )) {
54565456 for (uint32_t i = 0 ; i < num_args ; i ++ ) {
5457- zend_arg_info * arg_info = & fbc -> op_array .arg_info [i ];
5457+ zend_arg_info * arg_info = & fbc -> common .arg_info [i ];
54585458 if (zend_string_equals (arg_name , arg_info -> name )) {
5459- if (!fbc -> op_array .refcount || !(fbc -> op_array .fn_flags & ZEND_ACC_CLOSURE )) {
5459+ if (fbc -> type == ZEND_USER_FUNCTION && ( !fbc -> op_array .refcount || !(fbc -> op_array .fn_flags & ZEND_ACC_CLOSURE ) )) {
54605460 * cache_slot = unique_id ;
54615461 * (uintptr_t * )(cache_slot + 1 ) = i ;
54625462 }
@@ -5477,7 +5477,10 @@ static zend_always_inline uint32_t zend_get_arg_offset_by_name(
54775477 }
54785478
54795479 if (fbc -> common .fn_flags & ZEND_ACC_VARIADIC ) {
5480- if (fbc -> type == ZEND_INTERNAL_FUNCTION || !fbc -> op_array .refcount || !(fbc -> op_array .fn_flags & ZEND_ACC_CLOSURE )) {
5480+ if ((fbc -> type == ZEND_USER_FUNCTION
5481+ && (!fbc -> op_array .refcount || !(fbc -> op_array .fn_flags & ZEND_ACC_CLOSURE )))
5482+ || (fbc -> type == ZEND_INTERNAL_FUNCTION
5483+ && !(fbc -> common .fn_flags & ZEND_ACC_USER_ARG_INFO ))) {
54815484 * cache_slot = unique_id ;
54825485 * (uintptr_t * )(cache_slot + 1 ) = fbc -> common .num_args ;
54835486 }
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