[all-commits] [llvm/llvm-project] eea8ba: Check whether the destination is a complete type i...

[Richard Smith via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: eea8ba097c4a86632b88291bea51eb710f8ae4fb
      https://github.com/llvm/llvm-project/commit/eea8ba097c4a86632b88291bea51eb710f8ae4fb
  Author: Richard Smith <richard at metafoo.co.uk>
  Date:   2019-12-16 (Mon, 16 Dec 2019)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/AST/Type.cpp
    M clang/lib/Sema/SemaCast.cpp
    M clang/test/SemaCXX/enum.cpp

  Log Message:
  -----------
  Check whether the destination is a complete type in a static_cast (or
C-style cast) to an enumeration type.

We previously forgot to check this, and happened to get away with it
(with bad diagnostics) only because we misclassified incomplete
enumeration types as not being unscoped enumeration types. This also
fixes the misclassification.