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65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
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/* Test for open_memstream BZ #21037.
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Copyright (C) 2018 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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<http://www.gnu.org/licenses/>. */
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#include "tst-memstream.h"
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static void
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mcheck_abort (enum mcheck_status ev)
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{
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printf ("mecheck failed with status %d\n", (int) ev);
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exit (1);
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}
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static int
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do_test (void)
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{
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mcheck_pedantic (mcheck_abort);
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/* Check if freopen proper fflush the stream. */
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{
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CHAR_T old[] = W("old");
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CHAR_T *buf = old;
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size_t size;
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FILE *fp = OPEN_MEMSTREAM (&buf, &size);
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TEST_VERIFY_EXIT (fp != NULL);
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FPUTS (W("new"), fp);
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/* The stream buffer pointer should be updated with only a fflush or
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fclose. */
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TEST_COMPARE (STRCMP (buf, old), 0);
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/* The old stream should be fflush the stream, even for an invalid
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streams. */
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FILE *nfp = freopen ("invalid-file", "r", fp);
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TEST_VERIFY_EXIT (nfp == NULL);
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TEST_VERIFY (STRCMP (buf, W("new")) == 0);
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TEST_COMPARE_BLOB (buf, STRLEN (buf) * sizeof (CHAR_T),
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W("new"), STRLEN (W("new")) * sizeof (CHAR_T));
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TEST_COMPARE (fclose (fp), 0);
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free (buf);
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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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