From 13d14c6a9cbb7b9dca7e06b8ccd10bf4c47520bb Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Thu, 12 Feb 2026 18:22:37 +0900
Subject: Freeze `File.ftype` results

It is unlikely to modify these result strings.
---
 file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/file.c b/file.c
index 70c3892986..193dbea10d 100644
--- a/file.c
+++ b/file.c
@@ -2412,7 +2412,7 @@ rb_file_ftype(mode_t mode)
         t = "unknown";
     }
 
-    return rb_usascii_str_new2(t);
+    return rb_fstring_cstr(t);
 }
 
 /*
-- 
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