Re: terminate called after throwing an exception from a shared library

[Dallas Clement <dallas dot a dot clement at gmail dot com>]

Hi Matthias,

Thanks so much for the help.  You were spot on.  My TEventHandle
template class had been instantiated in each of the shared libraries
as well as the program executable.  Explicit instantiation did the
trick.

Thanks again!

Dallas

On Sat, May 15, 2010 at 5:09 AM, Matthias Kretz
<kretz@fias.uni-frankfurt.de> wrote:
> Hi,
>
> On Saturday 15 May 2010 06:28:58 Dallas Clement wrote:
>> terminate called after throwing an instance of
>> 'Execution::TEventHandle<Execution::EventBody>'
>
> I guess there is a local symbol of this type in both lib B and the executable.
> As it happens often with templates you define Execution::TEventHandle only in
> a header of lib A and the specialization
> Execution::TEventHandle<Execution::EventBody> then gets instantiated in lib B
> and the executable.
>
> Check your libs and executable with "nm -C" for (I think) typeinfo for
> Execution::TEventHandle<Execution::EventBody>
>
> If this symbol is only defined in one DSO and undefined in the others it
> should work. Else they use their own local symbol and thus seemingly a
> different type.
>
> You can fix this issue by doing an explicit specialization in lib A and moving
> at least one function of TEventHandle out of the header into a .cpp file of
> lib A. (AFAIR -- it's been a long time since I messed with errors of this
> kind.)
>
> Regards,
> ? ? ? ?Matthias
>
>