Mercurial > gnulib
view tests/test-posix_spawn_file_actions_addopen.c @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children | 5d9b82ca550a |
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/* Test posix_spawn_file_actions_addopen() function. Copyright (C) 2011-2019 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 <spawn.h> #include "signature.h" SIGNATURE_CHECK (posix_spawn_file_actions_addopen, int, (posix_spawn_file_actions_t *, int, const char *, int, mode_t)); #include <errno.h> #include <fcntl.h> #include <limits.h> #include <unistd.h> #include "macros.h" /* Return a file descriptor that is too big to use. Prefer the smallest such fd, except use OPEN_MAX if it is defined and is greater than getdtablesize (), as that's how OS X works. */ static int big_fd (void) { int fd = getdtablesize (); #ifdef OPEN_MAX if (fd < OPEN_MAX) fd = OPEN_MAX; #endif return fd; } int main (void) { posix_spawn_file_actions_t actions; ASSERT (posix_spawn_file_actions_init (&actions) == 0); /* Test behaviour for invalid file descriptors. */ { errno = 0; ASSERT (posix_spawn_file_actions_addopen (&actions, -1, "foo", 0, O_RDONLY) == EBADF); } { int bad_fd = big_fd (); errno = 0; ASSERT (posix_spawn_file_actions_addopen (&actions, bad_fd, "foo", 0, O_RDONLY) == EBADF); } return 0; }