Re: [Patch] x % 0 hangs

[Andrew Cagney <cagney@gnu.org>]

>    From: Ian Lance Taylor <ian@wasabisystems.com>
>    Date: 27 Jun 2004 11:06:19 -0400
> 
>    Andrew Cagney <cagney@gnu.org> writes:
> 
>    > > The only approach that's somewhat
>    > > portable is longjmp-ing out of the signal handler, and even that seems
>    > > to have its problems on some platforms.
>    > 
>    > I'm curious, which platforms?
> 
> Over the years I've seen quite a few bug-reports about this failing to
> work, but I can't remember exectly which platforms were affected.

We need start with a working assumption that GDB is being run on POSIX 
compliant systems and that implies a working sigsetjmp / siglongjmp. 
Only when someone comes forward with a problematic system should we 
worry about it (and possibly not even then).

(BTW, the other way to handle this is to implement a s/w emulation of 
the inferior's arithmetic, that would never throw a SIGFPE).

Andrew