Re: Problem with ffi/forwardInvocation and exception handling on OpenSolaris

[Saso Kiselkov]

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One note on the side: I'm using stock gcc-4.3.3 from the "gcc-43"
package from opensolaris.org, if that's any help.

BR,
- --
Saso

On 06/28/2010 03:04 PM, David Chisnall wrote:
> On 28 Jun 2010, at 13:18, Saso Kiselkov wrote:
> 
>> Sure, I've attached the original source and generated assembly.
> 
> 
> Well, that looks weird.  The unwind data for main() looks correct, but for 
> do_throw and -forwardException:, I can't find the the language-specific data 
> area's header. It appears to be creating the callsite info, but not actually 
> creating any references to it...
> 
> You're using GCC 4.3.3, according to the include stuff, but the generated 
> assembly looks a bit like nonsense.  I wonder if it is trying to make code 
> compatible with a Solaris exception ABI that the GNU runtime knows nothing 
> about?  Even that doesn't seem very likely.  
> 
> You could try putting a breakpoing on __gnu_objc_personality_v0() and then 
> checking that the call to parse_lsda_header() is working correctly for each 
> frame.  
> 
> Can you catch the exception in -forwardInvocation: or does it not even unwind 
> through the do_throw() function?  
> 
> David
> 
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