[PATCH] D152495: [Clang][SemaCXX] Add unused warning for variables declared in condition expressions

[Hans Wennborg via Phabricator via cfe-commits]

hans added a comment.

In D152495#4628887 <https://reviews.llvm.org/D152495#4628887>, @aaron.ballman wrote:

> That might not be a bad idea in this case -- perhaps `-Wunused-condition-variable` and group it under `-Wunused-variable`?

Sounds god to me conceptually. (I don't know the code, so don't know how hard it is practically.)


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