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fixed problem with Boost.Move C++03 perfect fwd emulation

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This commit is contained in:
joaquintides 2021-08-09 20:37:04 +02:00
parent 218b44d2f4
commit 81aeecad30
1 changed files with 21 additions and 2 deletions
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23
test/test_node_handling.cpp
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@ -419,12 +419,31 @@ struct enable_if_not_key_based:boost::enable_if_c<
void* void*
>{}; >{};
/* Boost.Move C++03 perfect forwarding emulation converts non-const lvalue
* refs to const lvalue refs. final_forward undoes that.
*/
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
template<typename T>
T&& final_forward(typename boost::remove_reference<T>::type& x)
{
return static_cast<T&&>(x);
}
#else
template<typename T>
T& final_forward(const T& x){return const_cast<T&>(x);}
#endif
template<typename Dst,typename Src> template<typename Dst,typename Src>
void merge( void merge(
Dst& dst,BOOST_FWD_REF(Src) src, Dst& dst,BOOST_FWD_REF(Src) src,
typename enable_if_key_based<Dst>::type=0) typename enable_if_key_based<Dst>::type=0)
{ {
dst.merge(boost::forward<Src>(src)); dst.merge(final_forward<Src>(src));
} }
template<typename Dst,typename Src> template<typename Dst,typename Src>
@ -432,7 +451,7 @@ void merge(
Dst& dst,BOOST_FWD_REF(Src) src, Dst& dst,BOOST_FWD_REF(Src) src,
typename enable_if_not_key_based<Dst>::type=0) typename enable_if_not_key_based<Dst>::type=0)
{ {
dst.splice(dst.end(),boost::forward<Src>(src)); dst.splice(dst.end(),final_forward<Src>(src));
} }
template<typename Dst,typename Src> template<typename Dst,typename Src>