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glibc/libio/tst-ftell-partial-wide.c
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/* Verify that ftell does not go into an infinite loop when a conversion fails | |
due to insufficient space in the buffer. | |
Copyright (C) 2014-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <wchar.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <locale.h> | |
#include <errno.h> | |
#include <unistd.h> | |
static int do_test (void); | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" | |
/* Arbitrary number large enough so that the target buffer during conversion is | |
not large enough. */ | |
#define STRING_SIZE (1400) | |
#define NSTRINGS (2) | |
static int | |
do_test (void) | |
{ | |
FILE *fp = NULL; | |
wchar_t *inputs[NSTRINGS] = {NULL}; | |
int ret = 1; | |
if (setlocale (LC_ALL, "en_US.UTF-8") == NULL) | |
{ | |
printf ("Cannot set en_US.UTF-8 locale.\n"); | |
goto out; | |
} | |
/* Generate input from one character, chosen because it has an odd number of | |
bytes in UTF-8, making it easier to reproduce the problem: | |
NAME Hiragana letter GO | |
CHAR ご | |
UTF-8 E38194 | |
UCS 3054 | |
MARC-8 692434 */ | |
wchar_t seed = L'ご'; | |
for (int i = 0; i < NSTRINGS; i++) | |
{ | |
inputs[i] = malloc (STRING_SIZE * sizeof (wchar_t)); | |
if (inputs[i] == NULL) | |
{ | |
printf ("Failed to allocate memory for inputs: %m\n"); | |
goto out; | |
} | |
wmemset (inputs[i], seed, STRING_SIZE - 1); | |
inputs[i][STRING_SIZE - 1] = L'\0'; | |
} | |
char *filename; | |
int fd = create_temp_file ("tst-fseek-wide-partial.out", &filename); | |
if (fd == -1) | |
{ | |
printf ("create_temp_file: %m\n"); | |
goto out; | |
} | |
fp = fdopen (fd, "w+"); | |
if (fp == NULL) | |
{ | |
printf ("fopen: %m\n"); | |
close (fd); | |
goto out; | |
} | |
for (int i = 0; i < NSTRINGS; i++) | |
{ | |
printf ("offset: %ld\n", ftell (fp)); | |
if (fputws (inputs[i], fp) == -1) | |
{ | |
perror ("fputws"); | |
goto out; | |
} | |
} | |
ret = 0; | |
out: | |
if (fp != NULL) | |
fclose (fp); | |
for (int i = 0; i < NSTRINGS; i++) | |
free (inputs[i]); | |
return ret; | |
} |