GDB `cannotfix' pr state, require PR with xfail `moving forward'.

[Eli Zaretskii]

> Date: Fri, 17 Jan 2003 14:28:01 -0600
> From: Michael Elizabeth Chastain <mec@shout.net>
> 
> Andrew C writes:
> > If the bug is fixed in GCC we might as well indicate this by closing our 
> > side of the bug report.  No reason to hang onto a bug report that has 
> > been resolved.
> 
> Does this include the XFAIL's for gcc v2 stabs+ in gdb.base/constvars.exp?
> 
> I really think that it's a year too early to close a gdb bug report
> with gcc 2.95.3 by saying "it works if you use gcc 3.X".

I agree.

I also think that if we introduce new bugs in some feature which did
support older compilers, that bug should be fixed, even if it's not
exposed by newer GCC versions.