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Re: Using EH from C
- From: Stelios Xanthakis <sxanth at ceid dot upatras dot gr>
- To: Richard Henderson <rth at redhat dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Sun, 2 May 2004 05:12:47 +0300 (EET DST)
- Subject: Re: Using EH from C
On Sat, 1 May 2004, Richard Henderson wrote:
> On Sat, May 01, 2004 at 05:09:23PM +0300, Stelios Xanthakis wrote:
> > But of little use without another extension to create landing pads...:(
>
> Why in the world would you need that?
Because if there's no landing pad, _Unwind_RaiseException
ends up on abort()?
I may be totally wrong, but what I'm trying to do is implement
"stack unwind with cost-free cleanups from C".
That's three things
1. register destructors on EH
Done: attribute(cleanup(function))
2. call 'throw'
Done: libgcc_eh and unwind.h
3. set up a landing pad somewhere (try-catch).
???
Where does _Unwind stop otherwise? main()?
~S