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Re: G++ ABI mismatches
- To: Chris Lattner <sabre@xxxxxxxxxx>
- Subject: Re: G++ ABI mismatches
- From: Richard Henderson <rth@xxxxxxxxxx>
- Date: Mon, 25 Aug 2003 15:41:31 -0700
On Mon, Aug 25, 2003 at 05:37:42PM -0500, Chris Lattner wrote:
> But how does cxa_begin catch know what the requested type is for
> the object? I thought that was the job of the personality routine?
It is. The personality routine computes the transformed pointer
as part of the type matching phase. It stores this pointer in a
c++ language private superclass of _Unwind_Exception. Which is
then returned by __cxa_begin_catch.
> Regardless, if G++ does not meet the ABI spec,
> either G++ or the ABI should be fixed. Which one? :)
The ABI. IIRC when I implemented this, I talked to one of the
HP guys and they do the same thing.
r~
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