[Boost-users] Emplace for Boost heaps

Hi, I'm trying to use the emplace function for the Boost heaps. I've come up with a minimal example (attached), but when I compile it I get the following error: In file included from testpq.cpp:1:0:

/opt/local/include/boost/heap/skew_heap.hpp: In instantiation of

...

'boost::heap::skew_heap::node_pointer boost::heap::skew_heap::emplace_internal(Args&& ...) [with Args = {int, int}; T = thing; A0 = boost::heap::compare<cmpthings>; A1 = boost::parameter::void_; A2 = boost::parameter::void_; A3 = boost::parameter::void_; A4 = boost::parameter::void_; A5 = boost::parameter::void_; A6 = boost::parameter::void_; boost::heap::skew_heap::node_pointer = boost::heap::detail::skew_heap_node*]':

/opt/local/include/boost/heap/skew_heap.hpp:769:13: required from

...

'static void boost::heap::skew_heap::push_void::emplace(boost::heap::skew_heap*, Args&& ...) [with Args = {int, int}; T = thing; A0 = boost::heap::compare<cmpthings>; A1 = boost::parameter::void_; A2 = boost::parameter::void_; A3 = boost::parameter::void_; A4 = boost::parameter::void_; A5 = boost::parameter::void_; A6 = boost::parameter::void_; boost::heap::skew_heap = boost::heap::skew_heap]'

/opt/local/include/boost/heap/skew_heap.hpp:437:70: required from

...

'typename boost::mpl::if_c::is_mutable, typename boost::mpl::if_c::is_mutable, typename boost::heap::skew_heap::implementation_defined::handle_type, void*>::type, void>::type boost::heap::skew_heap::emplace(Args&& ...) [with Args = {int, int}; T = thing; A0 = boost::heap::compare<cmpthings>; A1 = boost::parameter::void_; A2 = boost::parameter::void_; A3 = boost::parameter::void_; A4 = boost::parameter::void_; A5 = boost::parameter::void_; A6 = boost::parameter::void_; typename boost::mpl::if_c::is_mutable, typename boost::mpl::if_c::is_mutable, typename boost::heap::skew_heap::implementation_defined::handle_type, void*>::type, void>::type = void]'

testpq.cpp:27:20: required from here

/opt/local/include/boost/heap/skew_heap.hpp:808:9: error: no matching

...

function for call to 'boost::heap::skew_heap::make_node(int, int)'

/opt/local/include/boost/heap/skew_heap.hpp:808:9: note: candidates are:

In file included from /opt/local/include/boost/heap/skew_heap.hpp:21:0,

from testpq.cpp:1:

/opt/local/include/boost/heap/detail/stable_heap.hpp:189:19: note:

...

boost::heap::detail::heap_base::internal_type boost::heap::detail::heap_base::make_node(const T&) [with T = thing; Cmp = cmpthings; bool constant_time_size = true; StabilityCounterType = long unsigned int; bool stable = false; boost::heap::detail::heap_base::internal_type = thing]

/opt/local/include/boost/heap/detail/stable_heap.hpp:189:19: note:

...

candidate expects 1 argument, 2 provided

/opt/local/include/boost/heap/detail/stable_heap.hpp:195:10: note: T&&

...

boost::heap::detail::heap_base::make_node(T&&) [with T = thing; Cmp = cmpthings; bool constant_time_size = true; StabilityCounterType = long unsigned int; bool stable = false]

/opt/local/include/boost/heap/detail/stable_heap.hpp:195:10: note:

...

candidate expects 1 argument, 2 provided

It seems that something is amiss with the perfect forwarding (or I'm somehow using emplace incorrectly). Either way, any help getting this to work or figuring out why it doesn't would be greatly appreciated. Thanks, Rob