Re: [Boost-users] Catching boost::thread_interrupted

Subject: Re: [Boost-users] Catching boost::thread_interrupted
From: Dr. Roland Bock (rbock_at_[hidden])
Date: 2008-09-08 16:46:52

Hmm. No, I built boost the "normal" way. Through this thread, though, we 
saw several things:

a) boost::thread_interrupted is not caught when using the shared object
b) it works fine with the static
c) nm shows no symbols

I wondered if c) is the reason for a) and took a rather wild guess about 
the reason for c): Symbols are not exported "by accident".

Is there some compile option that can/should be used so that I can catch 
exceptions thrown by boost shared objects?

Thanks and regards,

Roland

Peter Dimov wrote:
> Dr. Roland Bock:
> 
>>> Boost does not use __attribute__ ((visibility("default"))), therefore 
>>> typeinfo for exceptions is not exported and you can't catch 
>>> exceptions thrown by boost.
>>
>> Please forgive me if this is a stupid question:
>>
>> Is that a bug or a feature? Wouldn't it be good to be able to catch 
>> exceptions thrown by boost?
> 
> I'm not sure I understand. Have you built Boost with an additional 
> -fvisibility-hidden parameter? If you didn't, the default visibility 
> should be the appropriately named "default", should it not? What effect 
> would __attribute__ ((visibility("default"))) then have?
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