id summary reporter owner description type status milestone component version severity resolution keywords cc 8741 Can't shift left more than 31 bits with the <<= operator for number/cpp_int_backend. neal.p.smith@… John Maddock "Can't shift left more than 31 bits with the <<= operator for number/cpp_int_backend. number> testNum(""0x00BBBBCCCCDDDDEEEEFFFF""); // testNum remains unchanged testNum <<= 32; // testNum shifts left one bit. testNum <<= 33; " Bugs closed To Be Determined multiprecision Boost 1.53.0 Problem fixed multiprecision shift