]>
Commit | Line | Data |
---|---|---|
df675f99 SP |
1 | /* Verify that ftell does not go into an infinite loop when a conversion fails |
2 | due to insufficient space in the buffer. | |
04277e02 | 3 | Copyright (C) 2014-2019 Free Software Foundation, Inc. |
df675f99 SP |
4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
18 | <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include <wchar.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <locale.h> | |
25 | #include <errno.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | static int do_test (void); | |
29 | #define TEST_FUNCTION do_test () | |
30 | #include "../test-skeleton.c" | |
31 | ||
32 | /* Arbitrary number large enough so that the target buffer during conversion is | |
33 | not large enough. */ | |
34 | #define STRING_SIZE (1400) | |
35 | #define NSTRINGS (2) | |
36 | ||
37 | static int | |
38 | do_test (void) | |
39 | { | |
40 | FILE *fp = NULL; | |
41 | wchar_t *inputs[NSTRINGS] = {NULL}; | |
42 | int ret = 1; | |
43 | ||
44 | if (setlocale (LC_ALL, "en_US.UTF-8") == NULL) | |
45 | { | |
46 | printf ("Cannot set en_US.UTF-8 locale.\n"); | |
47 | goto out; | |
48 | } | |
49 | ||
50 | ||
51 | /* Generate input from one character, chosen because it has an odd number of | |
52 | bytes in UTF-8, making it easier to reproduce the problem: | |
53 | ||
54 | NAME Hiragana letter GO | |
55 | CHAR ご | |
56 | UTF-8 E38194 | |
57 | UCS 3054 | |
58 | MARC-8 692434 */ | |
59 | wchar_t seed = L'ご'; | |
60 | for (int i = 0; i < NSTRINGS; i++) | |
61 | { | |
62 | inputs[i] = malloc (STRING_SIZE * sizeof (wchar_t)); | |
63 | if (inputs[i] == NULL) | |
64 | { | |
65 | printf ("Failed to allocate memory for inputs: %m\n"); | |
66 | goto out; | |
67 | } | |
68 | wmemset (inputs[i], seed, STRING_SIZE - 1); | |
69 | inputs[i][STRING_SIZE - 1] = L'\0'; | |
70 | } | |
71 | ||
72 | char *filename; | |
73 | int fd = create_temp_file ("tst-fseek-wide-partial.out", &filename); | |
74 | ||
75 | if (fd == -1) | |
76 | { | |
77 | printf ("create_temp_file: %m\n"); | |
78 | goto out; | |
79 | } | |
80 | ||
81 | fp = fdopen (fd, "w+"); | |
82 | if (fp == NULL) | |
83 | { | |
84 | printf ("fopen: %m\n"); | |
85 | close (fd); | |
86 | goto out; | |
87 | } | |
88 | ||
89 | for (int i = 0; i < NSTRINGS; i++) | |
90 | { | |
91 | printf ("offset: %ld\n", ftell (fp)); | |
92 | if (fputws (inputs[i], fp) == -1) | |
93 | { | |
94 | perror ("fputws"); | |
95 | goto out; | |
96 | } | |
97 | } | |
98 | ret = 0; | |
99 | ||
100 | out: | |
101 | if (fp != NULL) | |
102 | fclose (fp); | |
103 | for (int i = 0; i < NSTRINGS; i++) | |
104 | free (inputs[i]); | |
105 | ||
106 | return ret; | |
107 | } |