id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
7306,Regression from Changeset 80234: preprocessor undefined behaviour in type_traits,Hubert Tong <hstong@…>,John Maddock,"process_jam_log refuses to build for the AIX runner.
The build appears to be choking on undefined behaviour introduced in the subject changeset.

{{{
   306      BOOST_STATIC_CONSTANT(bool, value =
   307  #ifndef BOOST_NO_RVALUE_REFERENCES
   308          sizeof( _m_check(static_cast<rvalue_type>(_m_from)) ) == sizeof(::boost::type_traits::yes_type)
   309  #else
   310          sizeof( _m_check(_m_from) ) == sizeof(::boost::type_traits::yes_type)
   311  #endif
   312          );

}}}

N3290 subclause 16.3 [cpp.replace] paragraph 11 (re: invocations of a function-like macro):

...

If there are sequences of preprocessing tokens within the list of arguments that would otherwise act as preprocessing directives, the behaviour is undefined.
",Bugs,closed,To Be Determined,type_traits,Boost Development Trunk,Regression,fixed,,