[Bug uprobes/12275] uretprobes break exception handling

[fche at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12275

--- Comment #10 from Frank Ch. Eigler <fche at redhat dot com> 2010-12-07 03:46:08 UTC ---
(In reply to comment #9)
> (In reply to comment #7)
> > For reference, another short-term hack would be to disarm
> > some or all uretprobes while an exception dispatch is in
> > progress.
> 
> I mentioned this idea to Jim, and he told me that it's not a simple thing to
> disarm uretprobes.  

(Sacrificing more performance then, "temporarily remove" instead of "disarm".)

> Then there's the matter of hooking exception dispatch itself.  [...]
> And some point also to know that exception dispatch is finished.

Yes, a few extra uprobes would have to be placed, with awareness of
libstdc++/libgcc internals.

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