/* Copyright (C) 1991-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. 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, see <http://www.gnu.org/licenses/>. */ #include <string.h> #undef strncpy #ifndef STRNCPY #define STRNCPY strncpy #endif char * STRNCPY (char *s1, const char *s2, size_t n) { size_t size = __strnlen (s2, n); if (size != n) memset (s1 + size, '\0', n - size); return memcpy (s1, s2, size); } libc_hidden_builtin_def (strncpy)