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libstdc++: Fix preprocessor condition for inline variables

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Although variable templates are valid in C++14, inline ones aren't.
These are only used in C++17 (or later) code, so they don't need to be
defined for C++14.

libstdc++-v3/ChangeLog:

	* include/bits/chrono.h (__is_duration_v, __is_time_point_v):
	Only define for C++17 and later.
This commit is contained in:
Jonathan Wakely 2023-03-09 15:04:45 +00:00
parent f50f55b8fa
commit 4d771291f7
1 changed files with 1 additions and 1 deletions
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libstdc++-v3/include/bits/chrono.h
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@ -244,7 +244,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
using __disable_if_is_duration
= typename enable_if<!__is_duration<_Tp>::value, _Tp>::type;
#if __cpp_variable_templates
#if __cplusplus >= 201703L
template<typename _Tp>
inline constexpr bool __is_duration_v = false;
template<typename _Rep, typename _Period>