From 59056937bff9b8e36d460391e770fa1fcfa032dd Mon Sep 17 00:00:00 2001
From: Ilija Tovilo <ilija.tovilo@me.com>
Date: Thu, 1 May 2025 16:08:05 +0200
Subject: [PATCH] Fix use-of-uninitialized-value with exception on deprecated
 const access

Closes GH-18478
---
 ext/opcache/jit/zend_jit_vm_helpers.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ext/opcache/jit/zend_jit_vm_helpers.c b/ext/opcache/jit/zend_jit_vm_helpers.c
index d39a5c44be8..4348fbd53ad 100644
--- a/ext/opcache/jit/zend_jit_vm_helpers.c
+++ b/ext/opcache/jit/zend_jit_vm_helpers.c
@@ -380,6 +380,7 @@ static zend_always_inline zend_constant* _zend_quick_get_constant(
 				zend_deprecated_constant(c, c->name);
 				CONST_UNPROTECT_RECURSION(c);
 				if (EG(exception)) {
+					ZVAL_UNDEF(EX_VAR(opline->result.var));
 					return NULL;
 				}
 			}