[libcxx-commits] [libcxx] [libc++] Reland LWG2921 and LWG2976 (PR #107960)

[Louis Dionne via libcxx-commits]

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@@ -1507,6 +1509,7 @@ __packaged_task_function<_Rp(_ArgTypes...)>::__packaged_task_function(_Fp&& __f)
   }
 }
 
+#  if _LIBCPP_STD_VER <= 14
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ldionne wrote:

Ditto.

https://github.com/llvm/llvm-project/pull/107960