Uncatchable exceptions on some systems.

[Joshua ChaitinPollak]

On Jul 9, 2007, at 2:22 PM, David Daney wrote:

> Joshua ChaitinPollak wrote:
>> On Jul 9, 2007, at 1:43 PM, David Daney wrote:
>>>
>>> You don't say what version of uclibc you are using.
>>> The last time I checked, exception handling on uClibc was  
>>> foobar.  I am not sure if it is true for the versions you are  
>>> using.  There may be patches floating around that make things  
>>> work (I know I posted some a while back.)
>>>
>>> David Daney.
>>>
>> I'm using 0.9.28. I didn't realize uclibc could affect this. Can  
>> you recommend a version where exceptions work?
> The problems are in GCC not uClibc.
>
> See: http://gcc.gnu.org/ml/gcc-patches/2006-06/msg00815.html
>
> That was just a prototype patch and it has been a while since I  
> tried it so I don't know if it is still sufficient.
>
> Basically you need to disable -Dinhibit_libc and have the proper  
> dwarf2 exception handling code built into libgcc.
>
> In some cases there are problems getting the proper libraries  
> linked so that dl_iterate_pheader (sp?) is resolved in uClibc.
>
> David Daney

I was able to resolve this problem by recompiling gcc with "--enable- 
sjlj-exceptions --enable-__cxa_atexit" I'm not sure which (or both)  
are needed, but they solved my problem.

Thanks to David for pointing me in the right direction,

-Josh

-- 
Joshua ChaitinPollak
Software Engineer
Kiva Systems