import timespec and timespec_get into namespace std if we're under c++17 or later AND the underlying C library has them. Fixes PR#38220, but doesn't implement all of P0063 yet.

llvm-svn: 338419

1 files changed, 16 insertions, 0 deletions

diff --git a/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp b/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
index b9e19af3295..fe9f38daa3f 100644
--- a/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
+++ b/libcxx/test/std/utilities/time/date.time/ctime.pass.cpp
@@ -10,6 +10,8 @@
 #include <ctime>
 #include <type_traits>
 
+#include "test_macros.h"
+
 #ifndef NULL
 #error NULL not defined
 #endif
@@ -18,6 +20,12 @@
 #error CLOCKS_PER_SEC not defined
 #endif
 
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+#ifndef TIME_UTC
+#error TIME_UTC not defined
+#endif
+#endif
+
 int main()
 {
     std::clock_t c = 0;
@@ -30,10 +38,18 @@ int main()
     ((void)t); // Prevent unused warning
     ((void)tm); // Prevent unused warning
     ((void)str); // Prevent unused warning
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+    std::timespec tmspec = {};
+    ((void)tmspec); // Prevent unused warning
+#endif
+
     static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
     static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
     static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
     static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
+#if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
+    static_assert((std::is_same<decltype(std::timespec_get(nullptr, 0)), int>::value), "");
+#endif
 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
     static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
     static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");