Mercurial > gnulib
view tests/test-isatty.c @ 17364:7524d97ae56f
stdalign: port to stricter ISO C11
ISO C11 says that _Alignof's operand must be a parenthesized type.
Problem reported by Eli Zaretskii in
<http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>.
* doc/posix-headers/stdalign.texi (stdalign.h): Document this.
* m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Fri, 29 Mar 2013 19:47:13 -0700 |
parents | 3a09cc104f4c |
children | 344018b6e5d7 |
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/* Test isatty() function. Copyright (C) 2011-2013 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 <unistd.h> #include "signature.h" SIGNATURE_CHECK (isatty, int, (int)); #include <errno.h> #include <fcntl.h> #include "macros.h" /* The name of the "always silent" device. */ #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__ /* Native Windows API. */ # define DEV_NULL "NUL" #else /* Unix API. */ # define DEV_NULL "/dev/null" #endif int main (void) { const char *file = "test-isatty.txt"; /* Test behaviour for invalid file descriptors. */ { errno = 0; ASSERT (isatty (-1) == 0); ASSERT (errno == EBADF || errno == 0 /* seen on IRIX 6.5, Solaris 10 */ ); } { close (99); errno = 0; ASSERT (isatty (99) == 0); ASSERT (errno == EBADF || errno == 0 /* seen on IRIX 6.5, Solaris 10 */ ); } /* Test behaviour for regular files. */ { int fd; fd = open (file, O_WRONLY|O_CREAT|O_TRUNC, 0644); ASSERT (0 <= fd); ASSERT (write (fd, "hello", 5) == 5); ASSERT (close (fd) == 0); fd = open (file, O_RDONLY); ASSERT (0 <= fd); ASSERT (! isatty (fd)); ASSERT (close (fd) == 0); } /* Test behaviour for pipes. */ { int fd[2]; ASSERT (pipe (fd) == 0); ASSERT (! isatty (fd[0])); ASSERT (! isatty (fd[1])); ASSERT (close (fd[0]) == 0); ASSERT (close (fd[1]) == 0); } /* Test behaviour for /dev/null. */ { int fd; fd = open (DEV_NULL, O_RDONLY); ASSERT (0 <= fd); ASSERT (! isatty (fd)); ASSERT (close (fd) == 0); } ASSERT (unlink (file) == 0); return 0; }