Hi, I'm trying to compile the following code: #include boost::integer::ubig64_t big_endian_value; big_endian_value >> 1; but I get: error: ambiguous overload for 'operator>>' in 'big_endian_value >> 1' note: candidates are: operator>>(long long unsigned int, int) <built-in> ../../usr/include/boost-1_38/boost/spirit/home/support/detail/integer/cover_operators.hpp:53: note: long long unsigned int boost::integer::operator>>(const boost::integer::endian&, long long unsigned int) what am I doing wrong? (BTW, the same works with the >>= operator) I'm doing this on Linux, gcc 4.1.2 Akos