From 15c91cbe68d002461d796799fc844c157ebca758 Mon Sep 17 00:00:00 2001
From: GoldFish2500 <goldfish25@inbox.lv>
Date: Fri, 12 Dec 2025 16:31:30 +0300
Subject: [PATCH] Fixed deref probably null pointer

Pointer "control" doesn't check before usage in Replace function. There may be dereference null pointer.
---
 deps/v8/src/compiler/graph-reducer.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/deps/v8/src/compiler/graph-reducer.cc b/deps/v8/src/compiler/graph-reducer.cc
index 0abbd11e5cb8b3..b13ef2f0622ba6 100644
--- a/deps/v8/src/compiler/graph-reducer.cc
+++ b/deps/v8/src/compiler/graph-reducer.cc
@@ -263,6 +263,7 @@ void GraphReducer::ReplaceWithValue(Node* node, Node* value, Node* effect,
     DCHECK(!user->IsDead());
     if (NodeProperties::IsControlEdge(edge)) {
       if (user->opcode() == IrOpcode::kIfSuccess) {
+        DCHECK_NOT_NULL(control);
         Replace(user, control);
       } else if (user->opcode() == IrOpcode::kIfException) {
         DCHECK_NOT_NULL(dead_);