[boost] [thread_safe_signals] returning void from last_value when possible

From: Stjepan Rajko (stipe_at_[hidden])
Date: 2008-08-26 17:44:33

Hello,

When dealing with a signature of void return type, the Boost.Signals
version of last_value only returns last_value::unusable when the
compiler doesn't support void returns:
http://svn.boost.org/trac/boost/browser/trunk/boost/last_value.hpp#L34

But the thread-safe version always returns last_value::unusable:
http://svn.boost.org/trac/boost/browser/sandbox/thread_safe_signals/boost/last_value.hpp#L68

Could the thread-safe version be made consistent with Boost.Signals?

Thanks,

Stjepan