Subject: [boost] [foreach] Errors using foreach
From: Edward Diener (eldiener_at_[hidden])
Date: 2015-03-03 19:58:03
When trying to use the foreach library, whether running it tests or
trying to build quickbook which uses the foreach macro, I am seeing from
different compilers:
gcc-4.9.2
> In file included from stl_byval.cpp:15:0:
> ./utility.hpp: In function 'bool sequence_equal_byval_n(foreach_container_type&, const char*)':
> ..\..\../boost/foreach.hpp:906:96: error: no matching function for call to 'encode_type(foreach_container_type&, boost::is_const<std::list<int> >*)'
> (true ? 0 : boost::foreach_detail_::encode_type(COL, boost::foreach_detail_::is_const_(COL)))
> ^
> ..\..\../boost/foreach.hpp:1013:9: note: in expansion of macro 'BOOST_FOREACH_TYPEOF'
> , BOOST_FOREACH_TYPEOF(COL) \
> ^
> ..\..\../boost/foreach.hpp:1095:77: note: in expansion of macro 'BOOST_FOREACH_BEGIN'
> if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) {} else \
> ^
> ./utility.hpp:20:5: note: in expansion of macro 'BOOST_FOREACH'
> BOOST_FOREACH( foreach_value_type i, rng )
> ^
clang
> In file included from stl_byval.cpp:25:
> ././utility.hpp:20:5: error: no matching function for call to 'encode_type'
> BOOST_FOREACH( foreach_value_type i, rng )
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ..\..\..\boost/foreach.hpp:1095:77: note: expanded from macro 'BOOST_FOREACH'
> if (boost::foreach_detail_::auto_any_t BOOST_FOREACH_ID(_foreach_cur) = BOOST_FOREACH_BEGIN(COL)) {} else \
> ^~~~~~~~~~~~~~~~~~~~~~~~
> ..\..\..\boost/foreach.hpp:1013:9: note: expanded from macro 'BOOST_FOREACH_BEGIN'
> , BOOST_FOREACH_TYPEOF(COL) \
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> ..\..\..\boost/foreach.hpp:906:17: note: expanded from macro 'BOOST_FOREACH_TYPEOF'
> (true ? 0 : boost::foreach_detail_::encode_type(COL, boost::foreach_detail_::is_const_(COL)))
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ..\..\..\boost/foreach.hpp:401:22: note: candidate function [with T = std::list<int, std::allocator<int> >] not viable: no known conversion from 'boost::is_const<list<int, allocator<int> > > *' to 'boost::mpl::false_ *' (aka 'bool_<false> *') for 2nd argument
> inline type2type<T> *encode_type(T &, boost::mpl::false_ *) { return 0; }
> ^
> ..\..\..\boost/foreach.hpp:404:30: note: candidate function [with T = std::list<int, std::allocator<int> >] not viable: no known conversion from 'boost::is_const<list<int, allocator<int> > > *' to 'boost::mpl::true_ *' (aka 'bool_<true> *') for 2nd argument
> inline type2type<T, const_> *encode_type(T const &, boost::mpl::true_ *) { return 0; }
> ^
> In file included from stl_byval.cpp:25:
> ././utility.hpp:20:5: error: no matching function for call to 'encode_type'
> BOOST_FOREACH( foreach_value_type i, rng )
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Does anybody know what is causing this error ? I can't seem to proceed
in building documentation with quickbook until I can get foreach
working. I pulled the latest foreach from the master branch and ran b2
headers but still the problem occurs.