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author | Dan Willemsen <dwillemsen@google.com> | 2019-02-18 13:40:03 -0800 |
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committer | Dan Willemsen <dwillemsen@google.com> | 2019-02-18 13:40:03 -0800 |
commit | ea2b8a1c079d9184f53277f95a4d52c3c5a9f019 (patch) | |
tree | 5ec9aa82542909ecfc0859277d941528857a59b7 /tests/test-ftello4.c | |
parent | cfddd4f332465a447e87b4c1523fb2b9133e7afd (diff) | |
download | m4-ea2b8a1c079d9184f53277f95a4d52c3c5a9f019.tar.gz |
Add 1.4.18 tarball contentsupstream
Test: none
Change-Id: Id75707b7a41aaaaf33046cf541bcb19ecb4d5851
Diffstat (limited to 'tests/test-ftello4.c')
-rw-r--r-- | tests/test-ftello4.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/tests/test-ftello4.c b/tests/test-ftello4.c new file mode 100644 index 0000000..1f94ef6 --- /dev/null +++ b/tests/test-ftello4.c @@ -0,0 +1,70 @@ +/* Test of ftello() function. + Copyright (C) 2011-2016 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +#include <stdio.h> + +#include <errno.h> +#include <unistd.h> + +#include "macros.h" + +int +main (int argc, char **argv) +{ + const char *filename = argv[1]; + + /* Test that ftello() sets errno if someone else closes the stream + fd behind the back of stdio. */ + { + FILE *fp = fopen (filename, "r"); + ASSERT (fp != NULL); + setvbuf (fp, NULL, _IONBF, 0); + ASSERT (close (fileno (fp)) == 0); + errno = 0; + ASSERT (ftello (fp) == (off_t)-1); + ASSERT (errno == EBADF); + fclose (fp); + } + + /* Test that ftello() sets errno if the stream was constructed with + an invalid file descriptor. */ + { + FILE *fp = fdopen (-1, "w"); + if (fp != NULL) + { + errno = 0; + ASSERT (ftello (fp) == (off_t)-1); + ASSERT (errno == EBADF); + fclose (fp); + } + } + { + FILE *fp; + close (99); + fp = fdopen (99, "w"); + if (fp != NULL) + { + errno = 0; + ASSERT (ftello (fp) == (off_t)-1); + ASSERT (errno == EBADF); + fclose (fp); + } + } + + return 0; +} |