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910a835d | 1 | /* Test for memory leak with large width (BZ#25691). |
6d7e8eda | 2 | Copyright (C) 2020-2023 Free Software Foundation, Inc. |
910a835d AZ |
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 <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <wchar.h> | |
23 | #include <stdint.h> | |
24 | #include <locale.h> | |
25 | ||
26 | #include <mcheck.h> | |
27 | #include <support/check.h> | |
28 | #include <support/support.h> | |
29 | ||
30 | static int | |
31 | do_test (void) | |
32 | { | |
33 | mtrace (); | |
34 | ||
35 | /* For 's' conversion specifier with 'l' modifier the array must be | |
36 | converted to multibyte characters up to the precision specific | |
37 | value. */ | |
38 | { | |
39 | /* The input size value is to force a heap allocation on temporary | |
40 | buffer (in the old implementation). */ | |
41 | const size_t winputsize = 64 * 1024 + 1; | |
42 | wchar_t *winput = xmalloc (winputsize * sizeof (wchar_t)); | |
43 | wmemset (winput, L'a', winputsize - 1); | |
44 | winput[winputsize - 1] = L'\0'; | |
45 | ||
46 | char result[9]; | |
47 | const char expected[] = "aaaaaaaa"; | |
48 | int ret; | |
49 | ||
50 | ret = snprintf (result, sizeof (result), "%.65537ls", winput); | |
51 | TEST_COMPARE (ret, winputsize - 1); | |
52 | TEST_COMPARE_BLOB (result, sizeof (result), expected, sizeof (expected)); | |
53 | ||
54 | ret = snprintf (result, sizeof (result), "%ls", winput); | |
55 | TEST_COMPARE (ret, winputsize - 1); | |
56 | TEST_COMPARE_BLOB (result, sizeof (result), expected, sizeof (expected)); | |
57 | ||
58 | free (winput); | |
59 | } | |
60 | ||
61 | /* For 's' converstion specifier the array is interpreted as a multibyte | |
62 | character sequence and converted to wide characters up to the precision | |
63 | specific value. */ | |
64 | { | |
65 | /* The input size value is to force a heap allocation on temporary | |
66 | buffer (in the old implementation). */ | |
67 | const size_t mbssize = 32 * 1024; | |
68 | char *mbs = xmalloc (mbssize); | |
69 | memset (mbs, 'a', mbssize - 1); | |
70 | mbs[mbssize - 1] = '\0'; | |
71 | ||
72 | const size_t expectedsize = 32 * 1024; | |
73 | wchar_t *expected = xmalloc (expectedsize * sizeof (wchar_t)); | |
74 | wmemset (expected, L'a', expectedsize - 1); | |
75 | expected[expectedsize-1] = L'\0'; | |
76 | ||
77 | const size_t resultsize = mbssize * sizeof (wchar_t); | |
78 | wchar_t *result = xmalloc (resultsize); | |
79 | int ret; | |
80 | ||
81 | ret = swprintf (result, resultsize, L"%.65537s", mbs); | |
82 | TEST_COMPARE (ret, mbssize - 1); | |
83 | TEST_COMPARE_BLOB (result, (ret + 1) * sizeof (wchar_t), | |
84 | expected, expectedsize * sizeof (wchar_t)); | |
85 | ||
86 | ret = swprintf (result, resultsize, L"%1$.65537s", mbs); | |
87 | TEST_COMPARE (ret, mbssize - 1); | |
88 | TEST_COMPARE_BLOB (result, (ret + 1) * sizeof (wchar_t), | |
89 | expected, expectedsize * sizeof (wchar_t)); | |
90 | ||
91 | /* Same test, but with an invalid multibyte sequence. */ | |
92 | mbs[mbssize - 2] = 0xff; | |
93 | ||
94 | ret = swprintf (result, resultsize, L"%.65537s", mbs); | |
95 | TEST_COMPARE (ret, -1); | |
96 | ||
97 | ret = swprintf (result, resultsize, L"%1$.65537s", mbs); | |
98 | TEST_COMPARE (ret, -1); | |
99 | ||
100 | free (mbs); | |
101 | free (result); | |
102 | free (expected); | |
103 | } | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
108 | #include <support/test-driver.c> |