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79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/* Test getline: ENOMEM on allocation failure.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <mcheck.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/resource.h>
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#include <support/check.h>
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#include <support/test-driver.h>
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/* Produce a stream of test data based on data in COOKIE (ignored),
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storing up to SIZE bytes in BUF. */
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static ssize_t
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io_read (void *cookie, char *buf, size_t size)
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{
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memset (buf, 'x', size);
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return size;
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}
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/* Set up a test stream with fopencookie. */
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static FILE *
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open_test_stream (void)
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{
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static cookie_io_functions_t io_funcs = { .read = io_read };
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static int cookie;
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FILE *fp = fopencookie (&cookie, "r", io_funcs);
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TEST_VERIFY_EXIT (fp != NULL);
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return fp;
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}
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int
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do_test (void)
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{
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FILE *fp;
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char *lineptr = NULL;
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size_t size = 0;
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ssize_t ret;
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mtrace ();
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/* Test ENOMEM (and error indicator for stream set) for memory
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allocation failure. */
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verbose_printf ("Testing memory allocation failure\n");
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fp = open_test_stream ();
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struct rlimit limit;
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TEST_VERIFY_EXIT (getrlimit (RLIMIT_AS, &limit) == 0);
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limit.rlim_cur = 32 * 1024 * 1024;
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TEST_VERIFY_EXIT (setrlimit (RLIMIT_AS, &limit) == 0);
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errno = 0;
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ret = getline (&lineptr, &size, fp);
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TEST_COMPARE (ret, -1);
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TEST_COMPARE (errno, ENOMEM);
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TEST_COMPARE (!!ferror (fp), 1);
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TEST_COMPARE (feof (fp), 0);
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free (lineptr);
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fclose (fp);
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return 0;
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}
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#include <support/test-driver.c>
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