Merge pull request #5541 from practicalswift/swiftc-28447-result-case-not-implemented-failed

[swiftc (79 vs. 5179)] Add crasher in ?

Author: practicalswift

validation-test/compiler_crashers/28447-result-case-not-implemented-failed.swift

@@ -0,0 +1,16 @@
+// This source file is part of the Swift.org open source project
+// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+
+// RUN: not --crash %target-swift-frontend %s -emit-ir
+// REQUIRES: asserts
+t c
+let : {{
+return $0
+== Int
+struct B
+}
+g: