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[libc++] Make __decay_copy constexpr 

This is going to be necessary to implement some range adaptors.
As a fly-by fix, rename _LIBCPP_INLINE_VISIBILITY to _LIBCPP_HIDE_FROM_ABI
and remove a redundant inline keyword.

Differential Revision: https://reviews.llvm.org/D112650
This commit is contained in:
Louis Dionne 2021-10-27 15:12:07 -04:00
parent 3e39bbf5f9
commit 2999b7307f
1 changed files with 3 additions and 2 deletions
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5
libcxx/include/__utility/decay_copy.h
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@ -21,9 +21,10 @@
_LIBCPP_BEGIN_NAMESPACE_STD _LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp> template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY typename decay<_Tp>::type __decay_copy(_Tp&& __t) _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR
typename decay<_Tp>::type __decay_copy(_Tp&& __t)
#if _LIBCPP_STD_VER > 17 #if _LIBCPP_STD_VER > 17
noexcept(is_nothrow_convertible_v<_Tp, remove_reference_t<_Tp> >) noexcept(is_nothrow_convertible_v<_Tp, remove_reference_t<_Tp>>)
#endif #endif
{ {
return _VSTD::forward<_Tp>(__t); return _VSTD::forward<_Tp>(__t);