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-rw-r--r--libcxx/include/__config5
-rw-r--r--libcxx/include/chrono2
-rw-r--r--libcxx/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp2
-rw-r--r--libcxx/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp2
4 files changed, 10 insertions, 1 deletions
diff --git a/libcxx/include/__config b/libcxx/include/__config
index 14ecb8fb426..7e47f44790c 100644
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -492,6 +492,11 @@ namespace std {
#define _LIBCPP_ALWAYS_INLINE __attribute__ ((__always_inline__))
+// No apple compilers support ""d and ""y at this time.
+#if _LIBCPP_CLANG_VER < 800 || defined(__apple_build_version__)
+#define _LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS
+#endif
+
#elif defined(_LIBCPP_COMPILER_GCC)
#define _ALIGNAS(x) __attribute__((__aligned__(x)))
diff --git a/libcxx/include/chrono b/libcxx/include/chrono
index 1812df8f495..75258abd26b 100644
--- a/libcxx/include/chrono
+++ b/libcxx/include/chrono
@@ -2668,7 +2668,7 @@ inline namespace literals
return chrono::duration<long double, nano> (__ns);
}
-#if _LIBCPP_STD_VER > 17
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX20_CHRONO_LITERALS)
constexpr chrono::day operator ""d(unsigned long long __d) noexcept
{
return chrono::day(static_cast<unsigned>(__d));
diff --git a/libcxx/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp b/libcxx/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
index a442bb9514a..0911b43b54b 100644
--- a/libcxx/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
+++ b/libcxx/test/std/utilities/time/time.cal/time.cal.day/time.cal.day.nonmembers/literals.pass.cpp
@@ -7,6 +7,8 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: clang-5, clang-6
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8, apple-clang-9
// <chrono>
// class day;
diff --git a/libcxx/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp b/libcxx/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
index 92b701f8bc2..6ace2932424 100644
--- a/libcxx/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
+++ b/libcxx/test/std/utilities/time/time.cal/time.cal.year/time.cal.year.nonmembers/literals.pass.cpp
@@ -7,6 +7,8 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
+// UNSUPPORTED: clang-5, clang-6
+// UNSUPPORTED: apple-clang-6, apple-clang-7, apple-clang-8, apple-clang-9
// <chrono>
// class year;
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