Mercurial > gnulib
view lib/fdopen.c @ 40215:88b18d82fa61
crypto/des: Fix undefined behaviour.
* lib/des.c (READ_64BIT_DATA): Cast bytes to 'unsigned int', to avoid
shift operations on 'int'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 22:21:25 +0100 |
parents | b06060465f09 |
children |
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/* Open a stream with a given file descriptor. 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> /* Specification. */ #include <stdio.h> #include <errno.h> #if HAVE_MSVC_INVALID_PARAMETER_HANDLER # include "msvc-inval.h" #endif #undef fdopen #if HAVE_MSVC_INVALID_PARAMETER_HANDLER static FILE * fdopen_nothrow (int fd, const char *mode) { FILE *result; TRY_MSVC_INVAL { result = fdopen (fd, mode); } CATCH_MSVC_INVAL { result = NULL; } DONE_MSVC_INVAL; return result; } #else # define fdopen_nothrow fdopen #endif FILE * rpl_fdopen (int fd, const char *mode) { int saved_errno = errno; FILE *fp; errno = 0; fp = fdopen_nothrow (fd, mode); if (fp == NULL) { if (errno == 0) errno = EBADF; } else errno = saved_errno; return fp; }