Merge pull request swiftlang#22582 from DougGregor/enum-raw-value-error-cascade

Author: swift-ci

lib/AST/ProtocolConformance.cpp

@@ -1318,7 +1318,7 @@ void NominalTypeDecl::prepareConformanceTable() const {
     }
 
     // Enumerations with a raw type conform to RawRepresentable.
-    if (theEnum->hasRawType()) {
+    if (theEnum->hasRawType() && !theEnum->getRawType()->hasError()) {
       addSynthesized(KnownProtocolKind::RawRepresentable);
     }
   }

test/IDE/print_ast_tc_decls_errors.swift

@@ -110,12 +110,10 @@ class ClassWithInheritance9 : FooClass, BarClass, FooProtocol, BarProtocol, FooN
 //===---
 
 enum EnumWithInheritance1 : FooNonExistentProtocol {} // expected-error {{use of undeclared type 'FooNonExistentProtocol'}}
-// expected-error@-1{{type 'EnumWithInheritance1' does not conform to protocol 'RawRepresentable'}}
 // NO-TYREPR: {{^}}enum EnumWithInheritance1 : <<error type>> {{{$}}
 // TYREPR: {{^}}enum EnumWithInheritance1 : FooNonExistentProtocol {{{$}}
 
 enum EnumWithInheritance2 : FooNonExistentProtocol, BarNonExistentProtocol {} // expected-error {{use of undeclared type 'FooNonExistentProtocol'}} expected-error {{use of undeclared type 'BarNonExistentProtocol'}}
-// expected-error@-1{{type 'EnumWithInheritance2' does not conform to protocol 'RawRepresentable'}}
 // NO-TYREPR: {{^}}enum EnumWithInheritance2 : <<error type>>, <<error type>> {{{$}}
 // TYREPR: {{^}}enum EnumWithInheritance2 : FooNonExistentProtocol, BarNonExistentProtocol {{{$}}
 

test/decl/nested/protocol.swift

@@ -52,7 +52,6 @@ protocol Racoon {
 }
 
 enum SillyRawEnum : SillyProtocol.InnerClass {}
-// expected-error@-1 {{type 'SillyRawEnum' does not conform to protocol 'RawRepresentable'}}
 
 protocol SillyProtocol {
   class InnerClass<T> {} // expected-error {{type 'InnerClass' cannot be nested in protocol 'SillyProtocol'}}

test/decl/overload.swift

@@ -76,7 +76,6 @@ class mixed_redecl3 {} // expected-note {{previously declared here}}
 enum mixed_redecl3 {} // expected-error {{invalid redeclaration}}
 // expected-note @-1 2{{found this candidate}}
 enum mixed_redecl3a : mixed_redecl3 {} // expected-error {{'mixed_redecl3' is ambiguous for type lookup in this context}}
-// expected-error @-1{{'mixed_redecl3a' does not conform}}
 class mixed_redecl3b : mixed_redecl3 {} // expected-error {{'mixed_redecl3' is ambiguous for type lookup in this context}}
 
 class mixed_redecl4 {} // expected-note {{previously declared here}}