From a95b66f349244aefecc21a96d55418a63e2bf884 Mon Sep 17 00:00:00 2001
From: Mert Can Altin <mertgold60@gmail.com>
Date: Sun, 15 Mar 2026 23:06:25 +0300
Subject: [PATCH] src: use stack allocation in indexOf latin1 path

---
 benchmark/buffers/buffer-indexof.js |  2 +-
 src/node_buffer.cc                  | 10 +++-------
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/benchmark/buffers/buffer-indexof.js b/benchmark/buffers/buffer-indexof.js
index 52cc95ccb9cf7e..be6cc243a975da 100644
--- a/benchmark/buffers/buffer-indexof.js
+++ b/benchmark/buffers/buffer-indexof.js
@@ -19,7 +19,7 @@ const searchStrings = [
 
 const bench = common.createBenchmark(main, {
   search: searchStrings,
-  encoding: ['undefined', 'utf8', 'ucs2'],
+  encoding: ['undefined', 'utf8', 'ucs2', 'latin1'],
   type: ['buffer', 'string'],
   n: [5e4],
 }, {
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index e40a21288ee79d..acf4aff37c5a9c 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -1051,23 +1051,19 @@ void IndexOfString(const FunctionCallbackInfo<Value>& args) {
         offset,
         is_forward);
   } else if (enc == LATIN1) {
-    uint8_t* needle_data = node::UncheckedMalloc<uint8_t>(needle_length);
-    if (needle_data == nullptr) {
-      return args.GetReturnValue().Set(-1);
-    }
+    MaybeStackBuffer<uint8_t> needle_data(needle_length);
     StringBytes::Write(isolate,
-                       reinterpret_cast<char*>(needle_data),
+                       reinterpret_cast<char*>(needle_data.out()),
                        needle_length,
                        needle,
                        enc);
 
     result = nbytes::SearchString(reinterpret_cast<const uint8_t*>(haystack),
                                   haystack_length,
-                                  needle_data,
+                                  needle_data.out(),
                                   needle_length,
                                   offset,
                                   is_forward);
-    free(needle_data);
   }
 
   args.GetReturnValue().Set(