diff options
Diffstat (limited to 'string/strcpy.c')
-rw-r--r-- | string/strcpy.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/string/strcpy.c b/string/strcpy.c new file mode 100644 index 0000000000..c736a60762 --- /dev/null +++ b/string/strcpy.c @@ -0,0 +1,50 @@ +/* Copyright (C) 1991, 1997, 2000, 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stddef.h> +#include <string.h> +#include <memcopy.h> +#include <bp-checks.h> + +#undef strcpy + +/* Copy SRC to DEST. */ +char * +strcpy (dest, src) + char *dest; + const char *src; +{ + reg_char c; + char *__unbounded s = (char *__unbounded) CHECK_BOUNDS_LOW (src); + const ptrdiff_t off = CHECK_BOUNDS_LOW (dest) - s - 1; + size_t n; + + do + { + c = *s++; + s[off] = c; + } + while (c != '\0'); + + n = s - src; + (void) CHECK_BOUNDS_HIGH (src + n); + (void) CHECK_BOUNDS_HIGH (dest + n); + + return dest; +} +libc_hidden_builtin_def (strcpy) |