Merge pull request swiftlang#942 from practicalswift/swiftc-28199-swift-constraints-constraintsystem-performmemberlookup

[swiftc] Add test case for crash triggered in swift::constraints::ConstraintSystem::performMemberLookup(…)

Author: gribozavr

validation-test/compiler_crashers/28199-swift-constraints-constraintsystem-performmemberlookup.swift

@@ -0,0 +1,10 @@
+// RUN: not --crash %target-swift-frontend %s -parse
+// REQUIRES: asserts
+
+// Distributed under the terms of the MIT license
+// Test case submitted to project by https://github.com/practicalswift (practicalswift)
+// Test case found by fuzzing
+
+class A{
+struct S<>:A var e=A.e
+class A:e{typealias e=s

validation-test/compiler_crashers/README

@@ -24,4 +24,4 @@ SOFTWARE.
 Repository: https://github.com/practicalswift/swift-compiler-crashes.git
 Web URL: https://github.com/practicalswift/swift-compiler-crashes
 
-Tests updated as of revision a4124ed94080ff07b6cd55afe57970272fb52c2f
+Tests updated as of revision bfdd23326150a4ff1804e8810a0cbd5a254c5613