| // RUN: %target-swift-frontend %s -parse -verify | |
| // Test case submitted to project by https://github.com/practicalswift (practicalswift) | |
| // http://www.openradar.me/17986597 | |
| // Similar to 010-circular-protocol-reference.swift, might be same underlying bug. | |
| protocol A { | |
| typealias A = B | |
| } | |
| protocol B { | |
| typealias B = A | |
| } |