mirror of
https://sourceware.org/git/glibc.git
synced 2025-04-19 01:04:13 +03:00
7b47b3dd21
This is required so that fclose, when trying to seek to the right position after filling the input buffer, does not fail with EINVAL. This fclose code path only ignores ESPIPE errors. Reported by Petr Pisar on <https://bugzilla.redhat.com/show_bug.cgi?id=2358265>. Fixes commit be6818be31e756398e45f70e2819d78be0961223 ("Make fclose seek input file to right offset (bug 12724)"). Reviewed-by: Frédéric Bérat <fberat@redhat.com>
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Test that always-zero lseek does not cause fclose failure after fread.
|
|
Copyright (C) 2025 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 <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <support/check.h>
|
|
#include <support/xstdio.h>
|
|
|
|
int
|
|
do_test (void)
|
|
{
|
|
for (int do_ftello = 0; do_ftello < 2; ++do_ftello)
|
|
{
|
|
FILE *fp = xfopen ("/dev/zero", "r");
|
|
char buf[17];
|
|
memset (buf, 0xcc, sizeof (buf));
|
|
xfread (buf, 1, sizeof (buf), fp);
|
|
static const char zeros[sizeof (buf)] = { 0 };
|
|
TEST_COMPARE_BLOB (buf, sizeof (buf), zeros, sizeof (zeros));
|
|
if (do_ftello)
|
|
{
|
|
errno = 0;
|
|
TEST_COMPARE (ftello (fp), -1);
|
|
TEST_COMPARE (errno, ESPIPE);
|
|
}
|
|
/* Do not use xfclose because it flushes first. */
|
|
TEST_COMPARE (fclose (fp), 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|