MSYS2 GCC problem with Linux types

[d3vv]

Compile a small example with warning enable by:

gcc -Wold-style-cast msyswarn.cpp

#include <sys/select.h>

int main(int argc, char *argv[])
{
	fd_set read_fd;

	FD_ZERO(&read_fd);

	return 0;
}

we have a warning on msys2:

In file included from msyswarn.cpp:1:0:
msyswarn.cpp: In function ‘int main(int, char**)’:
msyswarn.cpp:7:11: warning: use of old-style cast [-Wold-style-cast]
  FD_ZERO(&read_fd);
           ^

There is no such warnings on my CentOS, Debian and Gentoo..

This is not only warning - this is a difference with Linux types which produce a bogus code on msys in real projects with debug hell for investigation.

And but what is a problem? If from Linux man:

       /* According to POSIX.1-2001, POSIX.1-2008 */
       #include <sys/select.h>

       /* According to earlier standards */
       #include <sys/time.h>
       #include <sys/types.h>
       #include <unistd.h>

       int select(int nfds, fd_set *readfds, fd_set *writefds,
                  fd_set *exceptfds, struct timeval *timeout);

       void FD_CLR(int fd, fd_set *set);
       int  FD_ISSET(int fd, fd_set *set);
       void FD_SET(int fd, fd_set *set);
       void FD_ZERO(fd_set *set);

       #include <sys/select.h>

       int pselect(int nfds, fd_set *readfds, fd_set *writefds,
                   fd_set *exceptfds, const struct timespec *timeout,
                   const sigset_t *sigmask);

[Alexpux]

@d3vv probably you need ask on Cygwin mailing list