New upstream version 1.0upstream/1.0

1 files changed, 10 insertions, 18 deletions

diff --git a/lib/unistr/u-cpy.h b/lib/unistr/u-cpy.h
index 1bbb1f0c..f0b3bc85 100644
--- a/lib/unistr/u-cpy.h
+++ b/lib/unistr/u-cpy.h
@@ -1,25 +1,16 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2018 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
-   This program is free software: you can redistribute it and/or
-   modify it under the terms of either:
+   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.
 
-     * the GNU Lesser General Public License as published by the Free
-       Software Foundation; either version 3 of the License, or (at your
-       option) any later version.
-
-   or
-
-     * the GNU General Public License as published by the Free
-       Software Foundation; either version 2 of the License, or (at your
-       option) any later version.
-
-   or both in parallel, as here.
-   This program is distributed in the hope that it will be useful,
+   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.
+   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/>.  */
@@ -35,7 +26,8 @@ FUNC (UNIT *dest, const UNIT *src, size_t n)
   for (; n > 0; n--)
     *destptr++ = *src++;
 #else
-  memcpy ((char *) dest, (const char *) src, n * sizeof (UNIT));
+  if (n > 0)
+    memcpy ((char *) dest, (const char *) src, n * sizeof (UNIT));
 #endif
   return dest;
 }