1 /* Test strncmp with size_t in the lower 32 bits of 64-bit register.
2 Copyright (C) 2019-2022 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 #ifdef WIDE
20 # define TEST_NAME "wcsncmp"
21 #else
22 # define TEST_NAME "strncmp"
23 #endif
24
25 #include "test-size_t.h"
26
27 #ifdef WIDE
28 # include <wchar.h>
29
30 # define STRNCMP wcsncmp
31 # define STRNCPY wcsncpy
32 # define CHAR wchar_t
33 #else
34 # define STRNCMP strncmp
35 # define STRNCPY strncpy
36 # define CHAR char
37 #endif
38
39 IMPL (STRNCMP, 1)
40
41 typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
42
43
44 static int
45 __attribute__ ((noinline, noclone))
do_strncmp(parameter_t a,parameter_t b)46 do_strncmp (parameter_t a, parameter_t b)
47 {
48 return CALL (&b, a.p, b.p, a.len);
49 }
50
51 static int
test_main(void)52 test_main (void)
53 {
54 test_init ();
55
56 size_t size = page_size / sizeof (CHAR);
57 parameter_t dest = { { size }, buf1 };
58 parameter_t src = { { 0 }, buf2 };
59
60 STRNCPY ((CHAR *) buf1, (const CHAR *) buf2, size);
61
62 int ret = 0;
63 FOR_EACH_IMPL (impl, 0)
64 {
65 src.fn = impl->fn;
66 int res = do_strncmp (dest, src);
67 if (res)
68 {
69 error (0, 0, "Wrong result in function %s: %i != 0",
70 impl->name, res);
71 ret = 1;
72 }
73 }
74
75 return ret ? EXIT_FAILURE : EXIT_SUCCESS;
76 }
77
78 #include <support/test-driver.c>
79