diff --git a/poppler/strtok_r.cpp b/poppler/strtok_r.cpp
index 1d5b31c..900bc8c 100644
@@ -17,6 +17,29 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+/* Copyright (C) 1991,93,96,97,99,2000,2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Based on strlen implementation by Torbjorn Granlund (email@example.com),
+ with help from Dan Sahlin (firstname.lastname@example.org) and
+ commentary by Jim Blandy (email@example.com);
+ adaptation to memchr suggested by Dick Karpinski (firstname.lastname@example.org),
+ and implemented by Roland McGrath (email@example.com).
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */