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/* Test getline: ENOMEM on allocation failure.
Copyright (C) 2024 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/resource.h>
#include <support/check.h>
#include <support/test-driver.h>
/* Produce a stream of test data based on data in COOKIE (ignored),
storing up to SIZE bytes in BUF. */
static ssize_t
io_read (void *cookie, char *buf, size_t size)
{
memset (buf, 'x', size);
return size;
}
/* Set up a test stream with fopencookie. */
static FILE *
open_test_stream (void)
{
static cookie_io_functions_t io_funcs = { .read = io_read };
static int cookie;
FILE *fp = fopencookie (&cookie, "r", io_funcs);
TEST_VERIFY_EXIT (fp != NULL);
return fp;
}
int
do_test (void)
{
FILE *fp;
char *lineptr = NULL;
size_t size = 0;
ssize_t ret;
mtrace ();
/* Test ENOMEM (and error indicator for stream set) for memory
allocation failure. */
verbose_printf ("Testing memory allocation failure\n");
fp = open_test_stream ();
struct rlimit limit;
TEST_VERIFY_EXIT (getrlimit (RLIMIT_AS, &limit) == 0);
limit.rlim_cur = 32 * 1024 * 1024;
TEST_VERIFY_EXIT (setrlimit (RLIMIT_AS, &limit) == 0);
errno = 0;
ret = getline (&lineptr, &size, fp);
TEST_COMPARE (ret, -1);
TEST_COMPARE (errno, ENOMEM);
TEST_COMPARE (!!ferror (fp), 1);
TEST_COMPARE (feof (fp), 0);
free (lineptr);
fclose (fp);
return 0;
}
#include <support/test-driver.c>
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