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Re: [Libunwind-devel] SIGFPE and _Unwind_GetIPInfo problem on x86_64 (g+


From: Lassi Tuura
Subject: Re: [Libunwind-devel] SIGFPE and _Unwind_GetIPInfo problem on x86_64 (g++-4.5)
Date: Mon, 7 Feb 2011 11:11:07 +0100

Hi,

>>> @Lassi: Just out of curiosity, did you forget to enable exception unwinding 
>>> support in libunwind (--enable-cxx-exceptions)?
>> 
>> Why do you ask? Is that necessary for the test? FWIW, libunwind build I used 
>> doesn't enable that option.
> 
> Yes that's necessary. I should have mentioned that in the first email - shame 
> on me :(
> Libunwind by default doesn't supply the necessary _Unwind_* functions for 
> exception handling.
> So, the default unwinding routines of gcc are used even though you preload 
> libunwind.so.
> And the result is obviously the same as without preloading libunwind.so.

I see. I'll leave those tests to someone else then.

Regards,
Lassi


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