Bug#182367: libc6-dev: inconsistency of sys/sem.h and linux/sem.h

[MeDon <O.Medek@sh.cvut.cz>]

Daniel Jacobowitz wrote:
> On Tue, Feb 25, 2003 at 11:04:03AM +0100, MeDon wrote:
>
> > Hi,
> > yes it's on i386 architecture. Both program I mentioned use <sys/sem.h>. 
> > I don't know much about it, sorry. I'm sending you a semtool.c and 
> > semstat.c from "LINUX Programmer's Guide". More on MPICH problem could 
> > be seen on http://www-unix.mcs.anl.gov/mpi/mpich/buglist-tbl.html.
> >
> > Regards
> >       Ondrej Medek
>
>
> They don't even compile; and I know that it's not a bug that
> <sys/sem.h> doesn't provide union semun - it's a bizarre quirk of the
> standards.

I think you're right. Red Hat 7.2. uses exactly the same header files. 
But what do you think about the sentence (MPICH) "One user found that 
the include file /usr/include/linux/sem.h (used by the kernel) and 
/usr/include/sys/sem.h and /usr/include/sys/ipc.h were not consistent, 
causing programs using semaphores to fail. If you have this problem, you 
need to correct your installation of Linux."


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