[Boost-bugs] [Boost C++ Libraries] #11840: New is_complex<T> failing with const types

Subject: [Boost-bugs] [Boost C++ Libraries] #11840: New is_complex<T> failing with const types
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-12-11 10:14:25

#11840: New is_complex<T> failing with const types
------------------------------+-------------------------
 Reporter:  dolfim@…          |      Owner:  johnmaddock
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  type_traits
  Version:  Boost 1.60.0      |   Severity:  Regression
 Keywords:                    |
------------------------------+-------------------------
 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
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11840>
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