[boost] [multiprecision] compilation failure

Hi, I have the following failure on develop from multiprecision (unit tests of boost.test): In file included from writing-test-ts/fp-multiprecision-comparison-test.cpp:23:0: ../../../boost/multiprecision/cpp_dec_float.hpp: In member function ?std::size_t boost::multiprecision::backends::cpp_dec_float::hash() const?: ../../../boost/multiprecision/cpp_dec_float.hpp:264:10: error: ?hash_combine? is not a member of ?boost? boost::hash_combine(result, data[i]); Thanks, Raffi