Re: [Boost-bugs] [Boost C++ Libraries] #3520: Syntax Error in boost/typeof/typeof.hpp

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3520: Syntax Error in boost/typeof/typeof.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-10-14 08:36:22

#3520: Syntax Error in boost/typeof/typeof.hpp
-------------------------------------------------------------------+--------
 Reporter:  Jason Masters <jason_masters@…>                        |       Owner:  burbelgruff
     Type:  Bugs                                                   |      Status:  new        
Milestone:  Boost 1.41.0                                           |   Component:  typeof     
  Version:  Boost 1.40.0                                           |    Severity:  Problem    
 Keywords:  syntax error typeof.hpp                                |  
-------------------------------------------------------------------+--------

Comment(by Jason Masters <jason_masters@…>):

 Do the Boost.Typeof tests define both !__COMO!__ and !__GNUG!__ ?
 I have checked a testcase of the issue with the online Comeau test:
 {{{
 #if defined(__COMO__)
 #   ifdef __GNUG__
 #       ifndef(BOOST_TYPEOF_EMULATION)
 #           define BOOST_TYPEOF_KEYWORD typeof
 #       endif
 #   endif
 #endif
 }}}

 With no defines this compiles successfully.
 With command line options -D!__COMO!__ -D!__GNUG!__ we get:
 {{{
 "ComeauTest.c", line 3: error: expected an identifier
   #       ifndef(BOOST_TYPEOF_EMULATION)
                 ^
 1 error detected in the compilation of "ComeauTest.c".
 }}}
 Which is what I would expect. If just !__COMO!__ is defined then
 compilation is successful.
 Even if the como compiler does parse this code successfully it is still
 wrong - other compilers still have to parse the code in the non-included
 #ifdef sections.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3520#comment:2>
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