[Boost-bugs] [Boost C++ Libraries] #12204: Boost 1.61.0 mulitiprecision introduces warning on clang / OS X

Subject: [Boost-bugs] [Boost C++ Libraries] #12204: Boost 1.61.0 mulitiprecision introduces warning on clang / OS X
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-05-13 15:52:08

#12204: Boost 1.61.0 mulitiprecision introduces warning on clang / OS X
------------------------------+------------------------------
 Reporter:  howard.hinnant@…  |       Type:  Bugs
   Status:  new               |  Milestone:  To Be Determined
Component:  None              |    Version:  Boost 1.61.0
 Severity:  Regression        |   Keywords:
------------------------------+------------------------------
 This change:

 https://github.com/boostorg/multiprecision/commit/df773c7ab293118eb29eac52067a0466431c9a96


 Introduces these warnings on OS X / clang:
 {{{
 In file included from
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/cpp_int.hpp:12:
 In file included from
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/number.hpp:22:
 In file included from
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/generic_interconvert.hpp:9:
 In file included from
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/default_ops.hpp:10:
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/number_base.hpp:415:13:
 warning: conversion function converting
       'expression<type-parameter-0-0, type-parameter-0-1, void, void,
 void>' to 'void' will never be used
    explicit operator void()const {}
             ^
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/number_base.hpp:479:13:
 warning: conversion function converting
       'expression<boost::multiprecision::detail::terminal, type-
 parameter-0-0, void, void, void>' to 'void' will never be used
    explicit operator void()const {}
             ^
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/number_base.hpp:547:13:
 warning: conversion function converting
       'expression<type-parameter-0-0, type-parameter-0-1, type-
 parameter-0-2, void, void>' to 'void' will never be used
    explicit operator void()const {}
             ^
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/number_base.hpp:626:13:
 warning: conversion function converting
       'expression<type-parameter-0-0, type-parameter-0-1, type-
 parameter-0-2, type-parameter-0-3, void>' to 'void' will never be used
    explicit operator void()const {}
             ^
 /Users/howardhinnant/Development/boost_1_61_0/boost/multiprecision/detail/number_base.hpp:714:13:
 warning: conversion function converting
       'expression<tag, Arg1, Arg2, Arg3, Arg4>' to 'void' will never be
 used
    explicit operator void()const {}
             ^
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12204>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.