From d33853ac3357eb8829eac62d91325e22475cbc91 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Sun, 12 Jan 2025 13:15:27 -0800
Subject: [PATCH] util: inspect: do not crash on an Error with a regex `name`

See #56570
---
 lib/internal/util/inspect.js       |  2 +-
 test/parallel/test-util-inspect.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/internal/util/inspect.js b/lib/internal/util/inspect.js
index cc76bbeed9bc11..9224f0956b1342 100644
--- a/lib/internal/util/inspect.js
+++ b/lib/internal/util/inspect.js
@@ -1354,7 +1354,7 @@ function removeDuplicateErrorKeys(ctx, keys, err, stack) {
     for (const name of ['name', 'message', 'stack']) {
       const index = ArrayPrototypeIndexOf(keys, name);
       // Only hide the property in case it's part of the original stack
-      if (index !== -1 && StringPrototypeIncludes(stack, err[name])) {
+      if (index !== -1 && StringPrototypeIncludes(stack, String(err[name]))) {
         ArrayPrototypeSplice(keys, index, 1);
       }
     }
diff --git a/test/parallel/test-util-inspect.js b/test/parallel/test-util-inspect.js
index 94064d9491894c..4b4497293d5675 100644
--- a/test/parallel/test-util-inspect.js
+++ b/test/parallel/test-util-inspect.js
@@ -3426,3 +3426,14 @@ assert.strictEqual(
     Object.defineProperty(BuiltinPrototype, 'constructor', desc);
   }
 }
+
+{
+  const error = new Error();
+  const re = /a/g;
+  error.name = re;
+  assert.strictEqual(error.name, re);
+  assert.strictEqual(
+    util.inspect(error),
+    error.stack,
+  );
+}