Merge pull request swiftlang#34353 from slavapestov/regression-test-sr-8456

Add regression test for https://bugs.swift.org/browse/SR-8456

Author: slavapestov

validation-test/compiler_crashers_2_fixed/sr8456.swift

@@ -0,0 +1,7 @@
+// RUN: not %target-swift-frontend -typecheck %s
+
+enum Foo {
+    case BigA {
+    }
+    case littleA(BigA)
+}