[Boost-bugs] [Boost C++ Libraries] #6296: wrong has_trivial_constructor value for custom class follows to programm fail

Subject: [Boost-bugs] [Boost C++ Libraries] #6296: wrong has_trivial_constructor value for custom class follows to programm fail
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-19 12:23:19

#6296: wrong has_trivial_constructor value for custom class follows to programm
fail
-------------------------------------+--------------------------------------
 Reporter:  azubanov@…               |       Owner:         
     Type:  Bugs                     |      Status:  new    
Milestone:  To Be Determined         |   Component:  None   
  Version:  Boost 1.48.0             |    Severity:  Problem
 Keywords:  has_trivial_constructor  |  
-------------------------------------+--------------------------------------
 System:
  -- Windows Server 2008 R2 x64
  -- Visual Studio 2010

 I use wrapper for MPFR (http://www.holoborodko.com/pavel/mpfr/) and custom
 std::complex type implementation for mpreal class (see attachment)

 typedef mpfr::mpreal                                    number;
 typedef std::complex<number>                            complex;
 typedef boost::numeric::ublas::matrix<complex>          cmatrix;

 cmatrix m1 = E - J;
 // E, J -- cmatrix

 storege.hpp:
 explicit BOOST_UBLAS_INLINE
         unbounded_array (size_type size, const ALLOC &a = ALLOC()):
             alloc_(a), size_ (size) {
           if (size_) {
               data_ = alloc_.allocate (size_);
                 // has_trivial_constructor returns true for
 complex<number>,
                 // but this is my custom class with implemented default
 construtor
               if (! detail::has_trivial_constructor<T>::value) {
                   for (pointer d = data_; d != data_ + size_; ++d)
                       alloc_.construct(d, value_type());
               }
           }
           else
               data_ = 0;
         }

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6296>
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