Re: Writing triggers in C++

Neil Conway wrote:
> On Wed, 2007-02-14 at 13:19 -0300, Alvaro Herrera wrote:
>> Probably stack allocation doesn't matter much, as I think that would be
>> unwinded by the longjmp call.  I don't know a lot about C++, but if
>> there are allocations in the data area then those would probably not be
>> freed.  But it makes me wonder -- is longjmp very compatible with C++
>> exceptions at all?
> 
> "C-style stack unwinding (using setjmp and longjmp from <csetjmp>) is
> incompatible with exception-handling and is best avoided." (Stroustrup,
> p. 433).
> 
> Which presumably means that in practice, the interaction between these
> features is implementation-defined.

Well, as long as you don't longjmp "past" an C++ catch block, and don't
throw an C++ exception "past" an setjmp handler, there should be no 
problem I think. Or at least I can't imagine how a problem could arise..

greetings, Florian Pflug