From 4247cd305b4f6d79912caaaf105faad324d3bc83 Mon Sep 17 00:00:00 2001
From: semimikoh <123785695+semimikoh@users.noreply.github.com>
Date: Wed, 29 Apr 2026 01:49:29 +0900
Subject: [PATCH] src: fix crash in GetErrorSource() for invalid using syntax
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Signed-off-by: semimikoh <ejffjeosms@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/62770
Fixes: https://github.com/nodejs/node/issues/62767
Refs: https://github.com/tc39/test262
Reviewed-By: René <contact.9a5d6388@renegade334.me.uk>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
---
 src/node_errors.cc | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/node_errors.cc b/src/node_errors.cc
index a2ece94b938..74326496132 100644
--- a/src/node_errors.cc
+++ b/src/node_errors.cc
@@ -150,8 +150,7 @@ static std::string GetErrorSource(Isolate* isolate,
                          : 0;
   int start = message->GetStartColumn();
   int end = message->GetEndColumn();
-  if (start >= script_start) {
-    CHECK_GE(end, start);
+  if (start >= script_start && end >= script_start) {
     start -= script_start;
     end -= script_start;
   }
@@ -161,8 +160,7 @@ static std::string GetErrorSource(Isolate* isolate,
   CHECK_GT(buf.size(), 0);
   *added_exception_line = true;
 
-  if (start > end ||
-      start < 0 ||
+  if (start > end || start < 0 || end < 0 ||
       static_cast<size_t>(end) > sourceline.size()) {
     return buf;
   }