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Fix unexpected lookup failure with GCC < 4.5.

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Kohei Takahashi
2014-11-01 21:16:26 +09:00
parent 4c110d9a88
commit 1b4acaa1b0
26 changed files with 95 additions and 0 deletions
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26
include/boost/fusion/support/config.hpp
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@ -1,5 +1,6 @@
/*=============================================================================
Copyright (c) 2014 Eric Niebler
Copyright (c) 2014 Kohei Takahashi
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@ -13,4 +14,29 @@
#define BOOST_FUSION_GPU_ENABLED BOOST_GPU_ENABLED
#endif
// Enclose with inline namespace because unqualified lookup of GCC < 4.5 is broken.
//
// namespace detail {
// struct foo;
// struct X { };
// }
//
// template <typename T> void foo(T) { }
//
// int main()
// {
// foo(detail::X());
// // prog.cc: In function 'int main()':
// // prog.cc:2: error: 'struct detail::foo' is not a function,
// // prog.cc:6: error: conflict with 'template<class T> void foo(T)'
// // prog.cc:10: error: in call to 'foo'
// }
namespace boost { namespace fusion { namespace detail
{
namespace barrier { }
using namespace barrier;
}}}
#define BOOST_FUSION_BARRIER_BEGIN namespace barrier {
#define BOOST_FUSION_BARRIER_END }
#endif