From 312ac7f0a1d973cf846187ac2119a86901f115ea Mon Sep 17 00:00:00 2001
From: normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 17 Mar 2017 00:55:50 +0000
Subject: [PATCH] deduplicate File::NULL string

"/dev/null" is a common sight for pre-1.9.3-compatible code
targeting *nix systems, so deduplicate it here, as well.

* file.c (Init_File): use fstring for File::NULL

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57996 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/file.c b/file.c
index 8bca84283d..c576c85c0a 100644
--- a/file.c
+++ b/file.c
@@ -6134,7 +6134,7 @@ Init_File(void)
     rb_define_const(rb_mFConst, "LOCK_NB", INT2FIX(LOCK_NB));
 
     /* Name of the null device */
-    rb_define_const(rb_mFConst, "NULL", rb_obj_freeze(rb_usascii_str_new2(null_device)));
+    rb_define_const(rb_mFConst, "NULL", rb_fstring_cstr(null_device));
 
     rb_define_method(rb_cFile, "path",  rb_file_path, 0);
     rb_define_method(rb_cFile, "to_path",  rb_file_path, 0);