[PATCH] D48863: [Sema] Explain coroutine_traits template in diag

[Gor Nishanov via Phabricator via cfe-commits]

GorNishanov added inline comments.


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Comment at: include/clang/Basic/DiagnosticSemaKinds.td:9053
   "a coroutine">;
+def note_coroutine_types_for_traits_here : Note<
+  "the coroutine traits class template is being instantiated using the return "
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I am wondering what is the use case here.
Is it to guard against badly designed standard library?

I played around a little and tried to see how I could get to trigger this error with a user-code, but, failed. If I did not specify enough parameters it will default to primary template defined in the <experimental/coroutine>


Repository:
  rC Clang

https://reviews.llvm.org/D48863