normal	2017-03-17 09:55:50 +0900 (Fri, 17 Mar 2017)

  New Revision: 57996

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57996

  Log:
    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

  Modified files:
    trunk/file.c
Index: file.c
===================================================================
--- file.c	(revision 57995)
+++ file.c	(revision 57996)
@@ -6134,7 +6134,7 @@ Init_File(void) https://github.com/ruby/ruby/blob/trunk/file.c#L6134
     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);

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