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glibc/stdio-common/test-vfprintf.c
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/* Tests of *printf for very large strings. | |
Copyright (C) 2000-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by Ulrich Drepper <drepper@redhat.com>, 2000. | |
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 <locale.h> | |
#include <mcheck.h> | |
#include <stdint.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#include <unistd.h> | |
#include <sys/stat.h> | |
#include <libc-internal.h> | |
const char *locs[] = | |
{ | |
"C", "de_DE.ISO-8859-1", "de_DE.UTF-8", "ja_JP.EUC-JP" | |
}; | |
#define nlocs (sizeof (locs) / sizeof (locs[0])) | |
char large[50000]; | |
static int | |
do_test (void) | |
{ | |
char buf[25]; | |
size_t i; | |
int res = 0; | |
int fd; | |
mtrace (); | |
strcpy (buf, "/tmp/test-vfprintfXXXXXX"); | |
fd = mkstemp (buf); | |
if (fd == -1) | |
{ | |
printf ("cannot open temporary file: %m\n"); | |
exit (1); | |
} | |
unlink (buf); | |
for (i = 0; i < nlocs; ++i) | |
{ | |
FILE *fp; | |
struct stat st; | |
int fd2; | |
setlocale (LC_ALL, locs[i]); | |
memset (large, '\1', sizeof (large)); | |
large[sizeof (large) - 1] = '\0'; | |
fd2 = dup (fd); | |
if (fd2 == -1) | |
{ | |
printf ("cannot dup for locale %s: %m\n", | |
setlocale (LC_ALL, NULL)); | |
exit (1); | |
} | |
if (ftruncate (fd2, 0) != 0) | |
{ | |
printf ("cannot truncate file for locale %s: %m\n", | |
setlocale (LC_ALL, NULL)); | |
exit (1); | |
} | |
fp = fdopen (fd2, "a"); | |
if (fp == NULL) | |
{ | |
printf ("cannot create FILE for locale %s: %m\n", | |
setlocale (LC_ALL, NULL)); | |
exit (1); | |
} | |
fprintf (fp, "%s", large); | |
fprintf (fp, "%.*s", 30000, large); | |
large[20000] = '\0'; | |
/* We're testing a large format string here and need to generate it | |
to avoid this source file being ridiculous. So disable the warning | |
about a generated format string. */ | |
DIAG_PUSH_NEEDS_COMMENT; | |
DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat-security"); | |
fprintf (fp, large); | |
DIAG_POP_NEEDS_COMMENT; | |
fprintf (fp, "%-1.300000000s", "hello"); | |
if (fflush (fp) != 0 || ferror (fp) != 0 || fclose (fp) != 0) | |
{ | |
printf ("write error for locale %s: %m\n", | |
setlocale (LC_ALL, NULL)); | |
exit (1); | |
} | |
if (fstat (fd, &st) != 0) | |
{ | |
printf ("cannot stat for locale %s: %m\n", | |
setlocale (LC_ALL, NULL)); | |
exit (1); | |
} | |
else if (st.st_size != 50000 + 30000 + 19999 + 5) | |
{ | |
printf ("file size incorrect for locale %s: %jd instead of %jd\n", | |
setlocale (LC_ALL, NULL), | |
(intmax_t) st.st_size, | |
(intmax_t) 50000 + 30000 + 19999 + 5); | |
res = 1; | |
} | |
else | |
printf ("locale %s OK\n", setlocale (LC_ALL, NULL)); | |
} | |
close (fd); | |
return res; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |