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-rw-r--r--posix/getopt1.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/posix/getopt1.c b/posix/getopt1.c
index b967d24f57..a1fab22817 100644
--- a/posix/getopt1.c
+++ b/posix/getopt1.c
@@ -1,6 +1,7 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
    Copyright (C) 1987-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
+   This file is part of the GNU C Library and is also part of gnulib.
+   Patches to this file should be submitted to both projects.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public