[libcxx-commits] [libcxx] [libcxx] Implement C++20 std::chrono::is_clock, std::chrono::is_clock_v (PR #160607)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,h,cpp,inc -- libcxx/include/__chrono/is_clock.h libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.pass.cpp libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.verify.cpp libcxx/include/chrono libcxx/modules/std/chrono.inc
``````````

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``````````diff
diff --git a/libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.verify.cpp b/libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.verify.cpp
index f902f7423..fff994184 100644
--- a/libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.verify.cpp
+++ b/libcxx/test/std/time/time.traits.is.clock/trait.is.clock.compile.verify.cpp
@@ -19,4 +19,4 @@ struct is_clock<int> : std::false_type {}; // expected-error@*:* {{'is_clock' ca
 template <>
 constexpr bool is_clock_v<float> = false; // expected-error@*:* {{'is_clock_v' cannot be specialized}}
 
-}
+} // namespace std::chrono

``````````

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https://github.com/llvm/llvm-project/pull/160607