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libstdc++: Simplify fs::path construction using variable template 

libstdc++-v3/ChangeLog:

	* include/bits/fs_path.h (__is_path_iter_src): Replace class
	template with variable template.
This commit is contained in:
Jonathan Wakely 2022-06-23 18:39:50 +01:00
parent 48099f7daf
commit 6177f60d91
1 changed files with 6 additions and 9 deletions
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15
libstdc++-v3/include/bits/fs_path.h
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@ -102,19 +102,16 @@ namespace __detail
#endif
template<typename _Iter_traits, typename = void>
struct __is_path_iter_src
: false_type
{ };
inline constexpr bool __is_path_iter_src = false;
template<typename _Iter_traits>
struct __is_path_iter_src<_Iter_traits,
void_t<typename _Iter_traits::value_type>>
: bool_constant<__is_encoded_char<typename _Iter_traits::value_type>>
{ };
inline constexpr bool
__is_path_iter_src<_Iter_traits, void_t<typename _Iter_traits::value_type>>
= __is_encoded_char<typename _Iter_traits::value_type>;
template<typename _Source>
inline constexpr bool __is_path_src
= __is_path_iter_src<iterator_traits<decay_t<_Source>>>::value;
= __is_path_iter_src<iterator_traits<decay_t<_Source>>>;
template<>
inline constexpr bool __is_path_src<path> = false;
@ -150,7 +147,7 @@ namespace __detail
// SFINAE constraint for InputIterator parameters as required by [fs.req].
template<typename _Iter, typename _Tr = __safe_iterator_traits<_Iter>>
using _Path2 = enable_if_t<__is_path_iter_src<_Tr>::value, path>;
using _Path2 = enable_if_t<__is_path_iter_src<_Tr>, path>;
#if __cpp_lib_concepts
template<typename _Iter>