mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
|
/* Regression test for 20632.
|
||
|
|
Copyright (C) 2024 Free Software Foundation, Inc.
|
||
|
|
Copyright The GNU Toolchain Authors.
|
||
|
|
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
|
||
|
|
<https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <support/check.h>
|
||
|
|
#include <support/xunistd.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#ifndef WIDE
|
||
|
|
# define TEST_NAME "fputs-unbuffered-full"
|
||
|
|
# define CHAR char
|
||
|
|
# define FPUTS fputs
|
||
|
|
# define TEXT "0123456789ABCDEF"
|
||
|
|
#else
|
||
|
|
# include <wchar.h>
|
||
|
|
# define TEST_NAME "fputws-unbuffered-full"
|
||
|
|
# define CHAR wchar_t
|
||
|
|
# define FPUTS fputws
|
||
|
|
# define TEXT L"0123456789ABCDEF"
|
||
|
|
#endif /* WIDE */
|
||
|
|
|
||
|
|
|
||
|
|
static int
|
||
|
|
do_test (void)
|
||
|
|
{
|
||
|
|
/* Open an unbuffered stream to /dev/full. */
|
||
|
|
FILE *fp = fopen ("/dev/full", "w");
|
||
|
|
TEST_VERIFY_EXIT (fp != NULL);
|
||
|
|
int ret = setvbuf (fp, NULL, _IONBF, 0);
|
||
|
|
TEST_VERIFY_EXIT (ret == 0);
|
||
|
|
|
||
|
|
/* Output a long string. */
|
||
|
|
const int sz = 4096;
|
||
|
|
CHAR *buff = calloc (sz+1, sizeof *buff);
|
||
|
|
for (int i=0; i < sz; i++)
|
||
|
|
buff[i] = (CHAR) 'x';
|
||
|
|
buff[sz] = (CHAR) '\0';
|
||
|
|
errno = 0;
|
||
|
|
ret = FPUTS (buff, fp);
|
||
|
|
TEST_VERIFY (ret == EOF);
|
||
|
|
TEST_VERIFY (errno == ENOSPC);
|
||
|
|
free (buff);
|
||
|
|
|
||
|
|
/* Output shorter strings. */
|
||
|
|
for (int i=0; i < 1024; i++)
|
||
|
|
{
|
||
|
|
errno = 0;
|
||
|
|
ret = FPUTS (TEXT, fp);
|
||
|
|
TEST_VERIFY (ret == EOF);
|
||
|
|
TEST_VERIFY (errno == ENOSPC);
|
||
|
|
|
||
|
|
/* Call malloc, triggering a crash if its
|
||
|
|
function pointers have been overwritten. */
|
||
|
|
void *volatile ptr = malloc (1);
|
||
|
|
free (ptr);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#include <support/test-driver.c>
|