Mercurial > gnulib
view lib/safe-write.h @ 40214:452ab00796c7
Fix undefined behaviour.
* lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to
'unsigned int', to avoid shift operations on 'int'.
* lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size.
* tests/test-count-leading-zeros.c (main): Use a random number that has
as many bits as TYPE, not only 2*15 or 2*31 bits.
* tests/test-count-trailing-zeros.c (main): Likewise.
* tests/test-count-one-bits.c (main): Likewise.
* tests/test-memmem.c: Don't include "null-ptr.h".
(main): Use zerosize_ptr() instead of null_ptr().
* modules/memmem-tests (Files): Remove tests/null-ptr.h.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 20:32:25 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* An interface to write() that retries after interrupts. Copyright (C) 2002, 2009-2019 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/>. */ /* Some system calls may be interrupted and fail with errno = EINTR in the following situations: - The process is stopped and restarted (signal SIGSTOP and SIGCONT, user types Ctrl-Z) on some platforms: Mac OS X. - The process receives a signal for which a signal handler was installed with sigaction() with an sa_flags field that does not contain SA_RESTART. - The process receives a signal for which a signal handler was installed with signal() and for which no call to siginterrupt(sig,0) was done, on some platforms: AIX, HP-UX, IRIX, OSF/1, Solaris. This module provides a wrapper around write() that handles EINTR. */ #include <stddef.h> #define SAFE_WRITE_ERROR ((size_t) -1) /* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted. Return the actual number of bytes written, zero for EOF, or SAFE_WRITE_ERROR upon error. */ extern size_t safe_write (int fd, const void *buf, size_t count);