Re: [Boost-build] Compiler warnings building Boost 1.37.0 for Macintosh OS X

Subject: Re: [Boost-build] Compiler warnings building Boost 1.37.0 for Macintosh OS X
From: Vladimir Prus (ghost_at_[hidden])
Date: 2008-11-04 03:35:57

On Tuesday 04 November 2008 06:13:31 Doug Hill wrote:
> Hello there,
> 
> I just got the latest Boost release 1.37.0. I'm attempting to build  
> the libraries on a Machine with OS X 10.5.5 and XCode 3.1.1. I made  
> the following change:
> - Commented out line 46 of /boost/math/tools/config.hpp
> //#  define BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
> 
> I then used the following command for the build:
> 
> sudo bjam --toolset=darwin --build-type=complete architecture=combined
> 
> I get a large number of warnings that I can't immediately tell if they  
> are significant or not:
> 
> = 
> = 
> = 
> ========================================================================
> ./boost/spirit/home/support/iterators/multi_pass.hpp:151: warning:  
> ‘boost 
> ::spirit 
> ::multi_pass 
> < 
> std 
> ::pair 
> <boost::wave::cpplexer::impl::lex_iterator_functor_shim<token_type>,  
> boost::wave::cpplexer::lex_input_interface<token_type>*>,  
> boost 
> ::spirit 
> ::multi_pass_policies 
> ::default_policy<boost::spirit::multi_pass_policies::ref_counted,  
> boost::spirit::multi_pass_policies::no_check,  
> boost::spirit::multi_pass_policies::split_functor_input,  
> boost::spirit::multi_pass_policies::split_std_deque> >::shared’ will  
> be initialized after
> ./boost/spirit/home/support/iterators/multi_pass.hpp:82: warning:    
> base  
> ‘boost 
> ::spirit 
> ::multi_pass_policies 
> ::default_policy<boost::spirit::multi_pass_policies::ref_counted,  
> boost::spirit::multi_pass_policies::no_check,  
> boost::spirit::multi_pass_policies::split_functor_input,  
> boost 
> ::spirit 
> ::multi_pass_policies 
> ::split_std_deque 
>  > 
> ::unique 
> < 
> std 
> ::pair 
> <boost::wave::cpplexer::impl::lex_iterator_functor_shim<token_type>,  
> boost::wave::cpplexer::lex_input_interface<token_type>*> >’
> ./boost/spirit/home/support/iterators/multi_pass.hpp:81: warning:    
> when initialized here
> ./boost/spirit/home/support/iterators/multi_pass.hpp: In copy  
> constructor ‘boost::spirit::multi_pass<T, Policies>::multi_pass(const  
> boost::spirit::multi_pass<T, Policies>&) [with T =  
> std 
> ::pair 
> <boost::wave::cpplexer::impl::lex_iterator_functor_shim<token_type>,  
> boost::wave::cpplexer::lex_input_interface<token_type>*>, Policies =  
> boost 
> ::spirit 
> ::multi_pass_policies 
> ::default_policy<boost::spirit::multi_pass_policies::ref_counted,  
> boost::spirit::multi_pass_policies::no_check,  
> boost::spirit::multi_pass_policies::split_functor_input,  
> boost::spirit::multi_pass_policies::split_std_deque>]’:
> ./boost/wave/cpplexer/cpp_lex_iterator.hpp:170:   instantiated from  
> ‘static boost::spirit::classic::tree_parse_info<LexIteratorT, typename  
> boost::wave::grammars::cpp_grammar_gen<LexIteratorT,  
> TokenContainerT>::node_factory_type, boost::spirit::classic::nil_t>  
> boost::wave::grammars::cpp_grammar_gen<LexIteratorT,  
> TokenContainerT>::parse_cpp_grammar(const LexIteratorT&, const  
> LexIteratorT&, const typename  
> LexIteratorT::token_type::position_type&, bool&, typename  
> LexIteratorT::token_type&, TokenContainerT&) [with LexIteratorT =  
> lexer_type, TokenContainerT = token_sequence_type]’
> libs/wave/src/instantiate_cpp_grammar.cpp:45:   instantiated from here
> 
> <many other snipped>
> 
> libs/python/src/converter/from_python.cpp: In function  
> ‘boost::python::converter::rvalue_from_python_stage1_data  
> boost::python::converter::rvalue_from_python_stage1(PyObject*, const  
> boost::python::converter::registration&)’:
> libs/python/src/converter/from_python.cpp:42: warning: ‘data 
> $construct’ may be used uninitialized in this function
> libs/python/src/converter/from_python.cpp: In function ‘void*  
> boost::python::converter::rvalue_result_from_python(PyObject*,  
> boost::python::converter::rvalue_from_python_stage1_data&)’:
> libs/python/src/converter/from_python.cpp:42: warning: ‘data 
> $construct’ may be used uninitialized in this function
> 
> <many others snipped>
> = 
> = 
> = 
> ========================================================================
> 
> Can anyone tell me if these warnings are something that I should be  
> concerned about?

I'm afraid you have to ask the maintainers of the libraries that produce
those warnings (maybe, on boost_at_[hidden]). Boost does not have
any single person who knows.

- Volodya