1 files changed, 18 insertions, 0 deletions

diff --git a/gl/xsize.c b/gl/xsize.c
index 4b4914c2..b3d73a2d 100644
--- a/gl/xsize.c
+++ b/gl/xsize.c
@@ -1,3 +1,21 @@
+/* Checked size_t computations.
+
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+   This file 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.
+
+   This file 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #include <config.h>
+
 #define XSIZE_INLINE _GL_EXTERN_INLINE
 #include "xsize.h"