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@…