1 /* Test and measure stpcpy checking functions.
2 Copyright (C) 1999-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #define STRCPY_RESULT(dst, len) ((dst) + (len))
20 #define TEST_MAIN
21 #define TEST_NAME "stpcpy_chk"
22 #include "../string/test-string.h"
23
24 extern void __attribute__ ((noreturn)) __chk_fail (void);
25 char *simple_stpcpy_chk (char *, const char *, size_t);
26 extern char *normal_stpcpy (char *, const char *, size_t)
27 __asm ("stpcpy");
28 extern char *__stpcpy_chk (char *, const char *, size_t);
29
30 IMPL (simple_stpcpy_chk, 0)
31 IMPL (normal_stpcpy, 1)
32 IMPL (__stpcpy_chk, 2)
33
34 char *
simple_stpcpy_chk(char * dst,const char * src,size_t len)35 simple_stpcpy_chk (char *dst, const char *src, size_t len)
36 {
37 if (! len)
38 __chk_fail ();
39 while ((*dst++ = *src++) != '\0')
40 if (--len == 0)
41 __chk_fail ();
42 return dst - 1;
43 }
44
45 #include "test-strcpy_chk.c"
46