[PATCH] Sema: Check dll attributes on redeclarations

[Nico Rieck]

On 30.03.2014 20:12, Reid Kleckner wrote:
> I like your wording better.  I'd go with "cannot".  DiagnosticSemaKinds.td
> has 28 "may not" instances and ~370 "cannot" instances.

That's what I figured. Thanks! Committed in r205197.