int
pipe2 (int fd[2], int flags)
{
+ /* Mingw _pipe() corrupts fd on failure; also, if we succeed at
+ creating the pipe but later fail at changing fcntl, we want
+ to leave fd unchanged: http://austingroupbugs.net/view.php?id=467 */
+ int tmp[2] = { fd[0], fd[1] };
+
#if HAVE_PIPE2
# undef pipe2
/* Try the system call first, if it exists. (We may be running with a glibc
/* Native Woe32 API. */
if (_pipe (fd, 4096, flags & ~O_NONBLOCK) < 0)
- return -1;
+ {
+ fd[0] = tmp[0];
+ fd[1] = tmp[1];
+ return -1;
+ }
/* O_NONBLOCK handling.
On native Windows platforms, O_NONBLOCK is defined by gnulib. Use the
int saved_errno = errno;
close (fd[0]);
close (fd[1]);
+ fd[0] = tmp[0];
+ fd[1] = tmp[1];
errno = saved_errno;
return -1;
}