1 /* Test of fbufmode() function.
2 Copyright (C) 2007 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
26 #define ASSERT(expr) \
31 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
37 #define TESTFILE "t-fbufmode.tmp"
45 /* Create a file with some contents. */
46 fp = fopen (TESTFILE, "w");
49 if (fwrite ("foobarsh", 1, 8, fp) < 8)
54 /* Open it for reading. */
55 fp = fopen (TESTFILE, "r");
57 if (setvbuf (fp, NULL, _IONBF, 0))
59 ASSERT (fbufmode (fp) == _IONBF);
61 /* This setvbuf call can fail, e.g. on HP-UX 11. */
62 if (setvbuf (fp, buf, _IOLBF, 5) == 0)
64 /* mingw's setvbuf implements _IOLBF the same way as _IOFBF. */
65 ASSERT (fbufmode (fp) == _IOLBF
66 || fbufmode (fp) == _IOFBF);
69 /* This setvbuf call can fail, e.g. on HP-UX 11. */
70 if (setvbuf (fp, buf, _IOFBF, 5) == 0)
72 ASSERT (fbufmode (fp) == _IOFBF);
80 fprintf (stderr, "Skipping test: file operations failed.\n");