Re: undefined reference to __gnustep_objcxx_personality_v0

[Dmitry Moskalchuk]

On 26/12/15 20:13, David Chisnall wrote:

Rereading the assembly, there was one obvious bug.  Can you rerun the tests and see if this fixes it?  If not, then there are likely some less-obvious bugs hiding.  

So after some investigation, I've found that libobjc2 start crashing after this commit: https://github.com/gnustep/libobjc2/commit/51071302779fdf6231fa75de133de34bd3efd171

It crashes exactly in the moment of objc_msgSend being called. For some reason it corrupt call stack; obviously, there is kind of overflow bug, or something like that.

Even though comment to that commit say " Currently, every objc_msgSend() implementation except for x86-64 is broken", it's not completely clear to me what exactly was done by that commit. I'd very appreciate if you could explain and somehow advise me.

--
Dmitry Moskalchuk

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