Merge pull request #6101 from practicalswift/swiftc-28562-swift-typebase-getcanonicaltype

[swiftc (117 vs. 5256)] Add crasher in swift::TypeBase::getCanonicalType(...)

Author: practicalswift

validation-test/compiler_crashers/28562-swift-typebase-getcanonicaltype.swift

@@ -0,0 +1,9 @@
+// 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 https://swift.org/LICENSE.txt for license information
+// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+
+// RUN: not --crash %target-swift-frontend %s -emit-ir
+{class A{let f={return 0 &+ 1 a}}s