[PATCH] D119184: [clang] [concepts] Check constrained-auto return types for void-returning functions

[Arthur O'Dwyer via Phabricator via cfe-commits]

Quuxplusone updated this revision to Diff 406847.
Quuxplusone added a comment.

Update one additional test where the expected output has changed:

  auto& f() { }

now produces "can't make a reference to void" instead of "can't deduce `auto&` from no return statements." I think this is a mild regression in diagnostic quality, but I don't immediately see what we should do about it so I'm inclined to take the hit. Suggestions welcome.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D119184/new/

https://reviews.llvm.org/D119184

Files:
  clang/include/clang/Sema/Sema.h
  clang/lib/Sema/SemaDecl.cpp
  clang/lib/Sema/SemaStmt.cpp
  clang/test/SemaCXX/deduced-return-type-cxx14.cpp
  clang/test/SemaTemplate/concepts.cpp

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