Merge pull request swiftlang#27054 from CodaFi/extensional-angst

Author: swift-ci

test/attr/dynamicReplacement.swift

@@ -50,6 +50,14 @@ extension K {
   func replacement_finalFunction() {}
 }
 
+extension undeclared { // expected-error{{use of undeclared type 'undeclared'}}
+  @_dynamicReplacement(for: property)
+  var replacement_property: Int { return 2 }
+
+  @_dynamicReplacement(for: func)
+  func func2() -> Int { return 2 }
+}
+
 extension P {
   @_dynamicReplacement(for: v)
   var replacement_v : Int {

test/decl/nested/type_in_extension.swift

@@ -8,14 +8,14 @@ extension G {
   }
 }
 
-extension G {
-  struct S<T> { // expected-note {{generic type 'S' declared here}}
+extension { // expected-error {{expected type name in extension declaration}}
+  struct S<T> {
     func foo(t: T) {}
   }
 
-  class M : S {} // expected-error {{reference to generic type 'G<T>.S' requires arguments in <...>}}
+  class M : S {}
 
-  protocol P { // expected-error {{protocol 'P' cannot be nested inside another declaration}}
+  protocol P {
     associatedtype A
   }
 }