Re: [Boost-bugs] [Boost C++ Libraries] #6126: Signed integer members of Boost.Fusion adapted ADTs are not output correctly with Boost.Spirit.Karma rules

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6126: Signed integer members of Boost.Fusion adapted ADTs are not output correctly with Boost.Spirit.Karma rules
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-01-20 14:57:33

#6126: Signed integer members of Boost.Fusion adapted ADTs are not output
correctly with Boost.Spirit.Karma rules
-------------------------------+--------------------------------------------
  Reporter:  t0rt1e@…          |       Owner:  hkaiser                                                                                                             
      Type:  Bugs              |      Status:  new                                                                                                                 
 Milestone:  To Be Determined  |   Component:  spirit                                                                                                              
   Version:  Boost 1.48.0      |    Severity:  Regression                                                                                                          
Resolution:                    |    Keywords:  patch proposed, Boost.Spirit.Karma, Boost.Fusion, BOOST_FUSION_ADAPT_CLASS, BOOST_FUSION_ADAPT_ADT, short, int, long
-------------------------------+--------------------------------------------

Comment (by t0rt1e@…):

 I just tried to compile
 {{{test_signed_integer_output_with_karma_minimal.cpp}}} with {{{g++ 4.7.0
 20120114 (experimental)}}} from !MacPorts against Boost trunk (svn rev.
 76591). Compilation succeeds, but running the test gives still completely
 wrong output depending on the chosen optimization level:
 {{{
 $ g++-mp-4.7 -O0 -o test_signed_integer_output_with_karma_minimal
 test_signed_integer_output_with_karma_minimal.cpp -I.../boost-trunk
 $ ./test_signed_integer_output_with_karma_minimal
 rational_int_adt(2, -6) = -771751935/3 (expected: -1/3)
 rational_int_adt(-2, 4) = -771751935/2 (expected: -1/2)
 rational_int_struct(2, -6) = 2/-6 (expected: 2/-6)
 $ g++-mp-4.7 -O1 -o test_signed_integer_output_with_karma_minimal
 test_signed_integer_output_with_karma_minimal.cpp -I.../boost-trunk
 $ ./test_signed_integer_output_with_karma_minimal
 rational_int_adt(2, -6) = 0/0 (expected: -1/3)
 rational_int_adt(-2, 4) = 0/0 (expected: -1/2)
 rational_int_struct(2, -6) = 2/-6 (expected: 2/-6)
 }}}
 Output with optimization {{{-O2}}} or {{{-O3}}} is the same as with
 {{{-O1}}}.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6126#comment:10>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.