tree 0381e56f715bee6b83f07b93a6d5da3d20dd3187
parent 2a0ee4a4880e725de37818fdf0646b0830ee3468
author Alex Lorenz <arphaman@gmail.com> 1477314771 +0100
committer Alex Lorenz <arphaman@gmail.com> 1477490740 +0100

[Sema] Display an objc_subclassing_restricted error for Objective-C
implementation declarations when appropriate.

rdar://28753587
(cherry picked from commit eb81c6fb87dd0fd5661209e2cf2aef5d77ca56b1)