id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11840	New is_complex<T> failing with const types	dolfim@…	John Maddock	"I would like to report a change in behavior for the new version of the type_traits in Boost 1.60.0 (b1).

When the type is ```const std::complex<T>```, the traits return false. This is different between 1.58.0 and the current 1.60.0b1

Example:
{{{
#!c++
template <typename T>
void mycheck() {
    if (boost::is_complex<T>())
        std::cout << ""COMPLEX"" << std::endl;
    else
        std::cout << ""REAL"" << std::endl;
}

int main () {
    mycheck<float>(); // REAL
    mycheck<double>(); // REAL
    mycheck<int>(); // REAL
    mycheck<std::complex<float> >();  // COMPLEX
    mycheck<std::complex<double> >();  // COMPLEX
    mycheck<std::complex<const double> >();  // COMPLEX
    mycheck<const std::complex<double> >();  // COMPLEX in 1.58.0, REAL in 1.60.0_b1
}
}}}"	Bugs	closed	To Be Determined	type_traits	Boost 1.60.0	Regression	fixed		hehn@…