Need for __uncatch_exception

[Mark Mitchell]

>>>>> "Christophe" == Christophe de Dinechin <ddd at cup.hp.com> writes:

    Christophe> To me, the spec is finished and was actually
    Christophe> implemented at HP. We used different names at the

I did not realize that the HP document was part of the proposed spec.
I'll look at that.

    Christophe> In our implementation, there is no need for
    Christophe> __uncatch_exception in compiler generated code. There
    Christophe> is a need for a special __rethrow entry point (sorry,
    Christophe> __cxa_rethrow). Rather than using __uncatch_exception,
    Christophe> we set a special bit on the exception, but the result
    Christophe> should be similar.

Right, that's similar.  GCC's uncatch_exception does a little more,
but I'm not sure exactly what.  It looks like it will pop several
exceptions off the stack, if necessary, but I'm not sure why that's
needed.  Jason?

Also, Jason, what are Red Hat's plans, if any, for implementing the HP
proposal?

--
Mark Mitchell                   mark at codesourcery.com
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