Has anyone had trouble with complex template code when moving from gcc 3.4 to gcc 4.0.1? I don't see anything in the release notes that matches the problem I'm getting, which looks like this (fuller error message attached below): no matching function for call to boost::smart_assert::Private::smart_assert_alloc<boost::smart_assert::assert_context_func>::destroy(std::pair<const int, boost::smart_assert::assert_context_func>*) candidates are: void __gnu_cxx::__mt_alloc_base<_Tp>::destroy(_Tp*) [with _Tp = boost::smart_assert::assert_context_func] (despite the namespace this is not an official boost library, but I hope this does not count as too off-topic) Darren g++ -Wall -Werror -g3 -DBOOST_SMART_ASSERT_MODE=1 -DBWIDTH=9 -DBHEIGHT=9 -Wno-reorder -c -o test_main.9.o test_main.cpp /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_tree.h: In member function 'void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::destroy_node(std::_Rb_tree_node<_Val>*) [with _Key = int, _Val = std::pair<const int, boost::smart_assert::assert_context_func>, _KeyOfValue = std::_Select1st<std::pair<const int, boost::smart_assert::assert_context_func> >, _Compare = std::less<int>, _Alloc = boost::smart_assert::Private::smart_assert_alloc<boost::smart_assert::assert_context_func>]': /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_tree.h:1096: instantiated from 'void std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_erase(std::_Rb_tree_node<_Val>*) [with _Key = int, _Val = std::pair<const int, boost::smart_assert::assert_context_func>, _KeyOfValue = std::_Select1st<std::pair<const int, boost::smart_assert::assert_context_func> >, _Compare = std::less<int>, _Alloc = boost::smart_assert::Private::smart_assert_alloc<boost::smart_assert::assert_context_func>]' /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_tree.h:570: instantiated from 'std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::~_Rb_tree() [with _Key = int, _Val = std::pair<const int, boost::smart_assert::assert_context_func>, _KeyOfValue = std::_Select1st<std::pair<const int, boost::smart_assert::assert_context_func> >, _Compare = std::less<int>, _Alloc = boost::smart_assert::Private::smart_assert_alloc<boost::smart_assert::assert_context_func>]' /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_map.h:92: instantiated from here /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/bits/stl_tree.h:389: error: no matching function for call to 'boost::smart_assert::Private::smart_assert_alloc<boost::smart_assert::assert_context_func>::destroy(std::pair<const int, boost::smart_assert::assert_context_func>*)' /usr/lib/gcc/i386-redhat-linux/4.0.1/../../../../include/c++/4.0.1/ext/mt_allocator.h:614: note: candidates are: void __gnu_cxx::__mt_alloc_base<_Tp>::destroy(_Tp*) [with _Tp = boost::smart_assert::assert_context_func] ... (then more of the same) ...