thakis accepted this revision.
thakis added a comment.
This revision is now accepted and ready to land.
Looks great.
================
Comment at: docs/ReleaseNotes.rst:126
+ namespace n { class C; }
+ using n::C; // Never actually used.
+
----------------
Maybe include an example with a using directive and a namespace alias as well.
================
Comment at: docs/ReleaseNotes.rst:139
+ used in conjunction with ``-Werror`` and as a result, the new warnings
+ are turned into new errors.
+
----------------
nit: I'd omit this paragraph -- this is true for all warnings and not special
for this warning.
================
Comment at: include/clang/Basic/DiagnosticGroups.td:828-829
// -Wunused-local-typedefs = -Wunused-local-typedef
+def : DiagGroup<"unused-usings", [UnusedUsing]>;
+ // -Wunused-usings = -Wunused-using
----------------
CarlosAlbertoEnciso wrote:
> lebedev.ri wrote:
> > Why? gcc compatibility?
> No particular reason. I just follow the 'unused-local-typedefs' model.
> If there is not objection from others reviewers, I will drop the gcc
> compatibility.
Does gcc have a `-Wunused-usings`? As far as I can tell it doesn't, so I agree
not having the alias makes sense. -Wunused-local-typedefs is here because gcc
has that flag.
https://reviews.llvm.org/D44826
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