Mercurial > gnulib
view tests/test-ftruncate.c @ 39186:c1c789fe74ad
spawn-pipe: Silence a clang warning.
Reported by Tim Rühsen <tim.ruehsen@gmx.de>.
* lib/spawn-pipe.c: Disable clang -Wconditional-uninitialized warnings
in this file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 15 Dec 2017 10:44:15 +0100 |
parents | a8586d5e30d2 |
children | 10eb9086bea0 |
line wrap: on
line source
/* Test truncating a file. Copyright (C) 2011-2017 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 <https://www.gnu.org/licenses/>. */ #include <config.h> #include <unistd.h> #include "signature.h" SIGNATURE_CHECK (ftruncate, int, (int, off_t)); #include <errno.h> #include <fcntl.h> #include "macros.h" int main (int argc, char *argv[]) { const char *filename = argv[1]; /* Test behaviour for invalid file descriptors. */ { errno = 0; ASSERT (ftruncate (-1, 0) == -1); ASSERT (errno == EBADF); } { close (99); errno = 0; ASSERT (ftruncate (99, 0) == -1); ASSERT (errno == EBADF); } /* Test behaviour for read-only file descriptors. */ { int fd = open (filename, O_RDONLY); ASSERT (fd >= 0); errno = 0; ASSERT (ftruncate (fd, 0) == -1); ASSERT (errno == EBADF || errno == EINVAL || errno == EACCES /* seen on mingw */ ); close (fd); } return 0; }