1 /* Test of fbufmode() function.
2 Copyright (C) 2007-2012 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. */
27 #define TESTFILE "t-fbufmode.tmp"
29 /* ISO C99 disallows more than one setvbuf call on a given stream,
30 and HP-UX 11 and musl libc indeed don't support such use of setvbuf.
31 Therefore allocate a new stream for each possible mode value. */
38 /* Open it for reading. */
39 fp = fopen (TESTFILE, "r");
44 ASSERT (setvbuf (fp, NULL, _IONBF, 0) == 0);
45 ASSERT (fbufmode (fp) == _IONBF);
49 ASSERT (setvbuf (fp, buf, _IOLBF, 5) == 0);
50 /* mingw's setvbuf implements _IOLBF the same way as _IOFBF. */
51 ASSERT (fbufmode (fp) == _IOLBF
52 || fbufmode (fp) == _IOFBF);
56 ASSERT (setvbuf (fp, buf, _IOFBF, 5) == 0);
57 ASSERT (fbufmode (fp) == _IOFBF);
74 /* Create a file with some contents. */
78 fp = fopen (TESTFILE, "w");
81 if (fwrite ("foobarsh", 1, 8, fp) < 8)
87 ret = test_mode (_IONBF);
91 ret = test_mode (_IOLBF);
95 ret = test_mode (_IOFBF);
105 fprintf (stderr, "Skipping test: file operations failed.\n");