[gfortran] add SIGNAL and ALARM intrinsics

[Steve Kargl]

On Sun, Oct 16, 2005 at 12:09:58PM +0200, FX Coudert wrote:
> >I don't understand how you implemented the intrinsic
> >functions for signal.
> 
> Right. Sent the wrong version of the patch. Here it is.
> 

I've read through the patch.  Everything looks OK, but bootstrap
fails because of

2005-10-24  Francois-Xavier Coudert  <coudert@clipper.ens.fr>

        PR fortran/15586
        * arith.c (gfc_arith_error): Change message to include locus.
        (check_result, eval_intrinsic, gfc_int2int, gfc_real2real,
        gfc_real2complex, gfc_complex2real, gfc_complex2complex): Use
        the new gfc_arith_error.
        (arith_error): Rewrite full error messages instead of building
        them from pieces.
        * check.c (must_be): Removed.

You remove must_be(), but this patch uses it.

-- 
Steve