Re: [Boost-users] Trouble with asio using lib pion and boost.function

Hi Steven,

...

return static_cast(vtable)->invoker (this->functor BOOST_FUNCTION_COMMA BOOST_FUNCTION_ARGS); } #endif

It says the static_cast rises the exception (?!) Damn MS.

a) Is the error on the static_cast or on reading the function pointer?

Alas, I can't really tell. For the compiler this is one line. But I have to assume it's coming out of the functor. At least this is what the debug run looked like.

b) does it happen consistently?

Yes, every time.

This could be the 1.36 Boost.Function thread safety regression. There is a race condition that can prevent invoker from being properly initialized before it is used.

Bad news indeed. But it would have to be something rather platform dependent such as this. Despite all efforts I couldn't reproduce it on either 64bit or 32bit GNU/Linux boxes I tried. Alas, it still get's worse. Trying to figure out if an update to 1.37 would be in place I ran into this: http://groups.google.tl/group/boost-list/browse_thread/thread/c19823879d3cde... Apparently boost.asio fails to work in 1.37 on windows. Which is mighty disappointing, since I hold asio in such high esteem. So is there any other way of fixing that so I could see if that was it? A patch for 1.36 perhaps? Apart from this, wouldn't a race condition bound to be a little more hard to catch? Usually the buggers tend to be rather unreproducable to the point you doubt they exist. Cazart, Stephan