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Re: Uncatchable exceptions on some systems.

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.


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,


Joshua ChaitinPollak
Software Engineer
Kiva Systems

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