1 /* Test case for strncmp inside a transactionally executing RTM region.
2 Copyright (C) 2021-2022 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 #include <stdint.h>
20 #include <tst-string-rtm.h>
21
22 #ifdef WIDE
23 # define CHAR wchar_t
24 # define MEMSET wmemset
25 # define STRNCMP wcsncmp
26 # define TEST_NAME "wcsncmp"
27 #else /* !WIDE */
28 # define CHAR char
29 # define MEMSET memset
30 # ifndef STRNCMP
31 # define STRNCMP strncmp
32 # define TEST_NAME "strncmp"
33 # endif
34 #endif /* !WIDE */
35
36
37
38 #define LOOP 3000
39 #define STRING_SIZE 1024
40 CHAR string1[STRING_SIZE];
41 CHAR string2[STRING_SIZE];
42
43 __attribute__ ((noinline, noclone))
44 static int
prepare(void)45 prepare (void)
46 {
47 MEMSET (string1, 'a', STRING_SIZE - 1);
48 MEMSET (string2, 'a', STRING_SIZE - 1);
49 if (STRNCMP (string1, string2, STRING_SIZE) == 0)
50 return EXIT_SUCCESS;
51 else
52 return EXIT_FAILURE;
53 }
54
55 __attribute__ ((noinline, noclone))
56 static int
function(void)57 function (void)
58 {
59 if (STRNCMP (string1, string2, STRING_SIZE) == 0)
60 return 0;
61 else
62 return 1;
63 }
64
65 __attribute__ ((noinline, noclone))
66 static int
function_overflow(void)67 function_overflow (void)
68 {
69 if (STRNCMP (string1, string2, SIZE_MAX) == 0)
70 return 0;
71 else
72 return 1;
73 }
74
75 __attribute__ ((noinline, noclone))
76 static int
function_overflow2(void)77 function_overflow2 (void)
78 {
79 if (STRNCMP (string1, string2, SIZE_MAX >> 4) == 0)
80 return 0;
81 else
82 return 1;
83 }
84
85 static int
do_test(void)86 do_test (void)
87 {
88 int status = do_test_1 (TEST_NAME, LOOP, prepare, function);
89 if (status != EXIT_SUCCESS)
90 return status;
91 status = do_test_1 (TEST_NAME, LOOP, prepare, function_overflow);
92 if (status != EXIT_SUCCESS)
93 return status;
94 status = do_test_1 (TEST_NAME, LOOP, prepare, function_overflow2);
95 if (status != EXIT_SUCCESS)
96 return status;
97 return status;
98 }
99