Merge pull request #12485 from practicalswift/swiftc-28864-bool-typesig-bool-extensionsig-unexpected-generic-ness-mismatch-on-conformance

[swiftc (70 vs. 5600)] Add crasher in swift::ASTContext::getConformance

Author: practicalswift

validation-test/compiler_crashers/28864-bool-typesig-bool-extensionsig-unexpected-generic-ness-mismatch-on-conformance.swift

@@ -0,0 +1,11 @@
+// This source file is part of the Swift.org open source project
+// Copyright (c) 2014 - 2017 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
+
+// REQUIRES: asserts
+// RUN: not --crash %target-swift-frontend %s -emit-ir
+protocol P{class a}protocol A:P
+extension P.a:A