aaron.ballman added a comment.

In http://reviews.llvm.org/D18265#386676, @alexfh wrote:

> > What about NonIdiomaticAddignOperator or UnchainableAssignOperator?
>
>
> Yep, "unchainable" doesn't cover all problems the check detects. 
> `misc-non-idiomatic-assign-operator` seems good though. I'd wait for the 
> original author to chime in before making the change.


This doesn't check for idiomatic assignment, unfortunately. For instance, it 
allows `T &operator=(T)` which is a copy assignment, but not generally 
considered an idiomatic one. (Similar for allowing `volatile`-qualified 
parameters.) If we want to go with such a check, I would not be opposed to it, 
but we should definitely discuss what "idiomatic" means.


http://reviews.llvm.org/D18265



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