[libcxx-commits] [libcxx] [libc++] Implement LWG3476: Add mandates to thread, jthread, and async (PR #173363)

[Marcell Leleszi via libcxx-commits]

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@@ -1847,15 +1849,20 @@ inline _LIBCPP_HIDE_FROM_ABI bool __does_policy_contain(launch __policy, launch
 template <class _Fp, class... _Args>
 [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI future<__invoke_result_t<__decay_t<_Fp>, __decay_t<_Args>...> >
 async(launch __policy, _Fp&& __f, _Args&&... __args) {
+#      if _LIBCPP_STD_VER >= 17
+  static_assert(is_constructible_v<__decay_t<_Fp>, _Fp>);
+  static_assert((is_constructible_v<__decay_t<_Args>, _Args> && ...));
+  static_assert(is_invocable_v<__decay_t<_Fp>, __decay_t<_Args>...>);
+#      endif
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mleleszi wrote:

Done

https://github.com/llvm/llvm-project/pull/173363