Testing using "g++ (GCC) 4.9.0 20131013 (experimental)" with the default compilation flags (i.e., not C++11), I get errors including the following in Boost.TR1:
and similar problems in std_test_ref_wrapper_tricky.
Apart from the fact that this is an unreleased compiler, whether or not that test passes (and it's *very* strict, hence the "tricky" name), depends on the implementation of std::reference_wrapper. I suspect - but haven't had time to check - that this is a difference between the TR1 specification and C++11, in that if memory serves, TR1 requires inheritance from std::unary_function, where as C++11 does not. Given that the test case tests strict adherence to TR1, such failures should probably just be marked up as expected. Oh wait.... this is in C++03 compilation mode? In that case it depends on Boost's reference wrapper, which has never been TR1 conforming. John. PS, can we deprecate Boost.TR1 yet? ;-)