[Boost-bugs] [Boost C++ Libraries] #8275: conversion_traits::super/subtype incorrect for UDT's

Subject: [Boost-bugs] [Boost C++ Libraries] #8275: conversion_traits::super/subtype incorrect for UDT's
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-03-11 16:54:45

#8275: conversion_traits::super/subtype incorrect for UDT's
-------------------------------------+--------------------------------------
 Reporter:  johnmaddock              |       Owner:  dgregor
     Type:  Bugs                     |      Status:  new    
Milestone:  To Be Determined         |   Component:  numeric
  Version:  Boost Development Trunk  |    Severity:  Problem
 Keywords:                           |  
-------------------------------------+--------------------------------------
 The following static assertion fails:

 {{{
 #include <boost/numeric/conversion/conversion_traits.hpp>
 #include <boost/multiprecision/cpp_dec_float.hpp>

    using namespace boost::multiprecision;
 BOOST_STATIC_ASSERT(boost::numeric::convdetail::get_is_subranged<cpp_dec_float_50,
 cpp_dec_float_100>::type::value);

 }}}

 Which causes all sorts of other failures in clients of this class - it
 looks like UDT conversions are treated as always non-narrowing (?) where
 as use of numeric_limits would quickly reveal otherwise.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8275>
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