Re: Mention signal fixes in NEWS

[Andrew Cagney <cagney at gnu dot org>]

> > > +Many generic problems with GDB's signal handling code have been fixed.
> > > +These include: support for sigaltstack and sigaction;
>
>
> I'd prefer that we spell out what this ``support for sigaltstack and
> sigaction'' means, in user-level terms.  That is, what exactly didn't
> work before and now does, when sigaltstack and sigaction are involved?

... include: backtraces through non-contigious stacks (see 
sigaltstack(2)); recognition of sa_sigaction signal trampolines (see 
sigaction(2)); ...

> > > +Note that kernel and architecture specific limitations may still
> > > +restrict this functionality (ref PR gdb/1639).
>
>
> How about being more explicit here?  What configurations have this
> new support, and which don't?  Can we list at least the more popular
> platforms in each category?

That gets complicated.  Since some features only work on specific 
patched kernels.  However we can probably safely state that the features 
do work on ``i386 GNU/Linux systems that include a 2.4 kernel''.

Andrew