mirror of git://sourceware.org/git/glibc.git
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Test that always-zero lseek does not cause fclose failure after fread.
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Copyright (C) 2025 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 <stdio.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/xstdio.h>
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int
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do_test (void)
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{
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for (int do_ftello = 0; do_ftello < 2; ++do_ftello)
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{
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FILE *fp = xfopen ("/dev/zero", "r");
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char buf[17];
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memset (buf, 0xcc, sizeof (buf));
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xfread (buf, 1, sizeof (buf), fp);
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static const char zeros[sizeof (buf)] = { 0 };
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TEST_COMPARE_BLOB (buf, sizeof (buf), zeros, sizeof (zeros));
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if (do_ftello)
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{
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errno = 0;
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TEST_COMPARE (ftello (fp), -1);
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TEST_COMPARE (errno, ESPIPE);
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}
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/* Do not use xfclose because it flushes first. */
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TEST_COMPARE (fclose (fp), 0);
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}
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return 0;
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}
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#include <support/test-driver.c>
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