[Boost-users] BOOST_RESULT_OF_USE_DECLTYPE and Boost.Optional ?

Subject: [Boost-users] BOOST_RESULT_OF_USE_DECLTYPE and Boost.Optional ?
From: John M. Dlugosz (mpbecey7gu_at_[hidden])
Date: 2012-05-27 14:32:42

I turned on BOOST_RESULT_OF_USE_DECLTYPE and used boost::result_of because the 
std::tr1::result_of that comes with VS10 doesn't use declspec at all and thus doesn't work 
right with lambda functions.

This passes my unit tests, but fails on a piece of code that has a function returning an 
instantiation of boost::optional.

It seems confused as to whether the value held in the optional is as-specified or has a 
reference added to it.

I wonder if this is a specific issue with optional that might be 
addressed/worked-around/patched, or perhaps there is a way to enable declspec-based 
testing just for the code that wanted it and not globally?

—John