id summary reporter owner description type status milestone component version severity resolution keywords cc 11790 Nvm this, it was not a boost problem bravimalko@… Daniel James "There is an overload of emplace (boost/unordered/unordered_map.hpp:350) that is supposed to take the constructor arguments for the key and value objects to be emplaced, which is the one that should be used in place of the overload with variadic template when compiling in C++98. The test program attached tries to make use of said overload but it fails to compile. I compiled with g++ 4.4.7 and clang 3.4 on Red Hat 4.4.7-11 using Boost 1.59. http://www.boost.org/doc/libs/1_59_0/boost/unordered/unordered_map.hpp" Bugs closed To Be Determined None Cosmetic invalid