Fail inference when an instance field is referenced.

pkg/analyzer/lib/src/summary/summarize_const_expr.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library serialization.summarize_const_expr;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/type.dart' show DartType;
 import 'package:analyzer/src/summary/format.dart';
@@ skipping 351 matching lines @@
     } else if (expr is ParenthesizedExpression) {
       _serialize(expr.expression);
     } else if (expr is IndexExpression) {
       isValidConst = false;
       _serialize(expr.target);
       _serialize(expr.index);
       operations.add(UnlinkedExprOperation.extractIndex);
     } else if (expr is AssignmentExpression) {
       _serializeAssignment(expr);
     } else if (expr is CascadeExpression) {
-      _serializeCascadeExpression(expr);
+      isValidConst = false;
+      _serialize(expr.target);
     } else if (expr is FunctionExpression) {
       isValidConst = false;
       List<int> indices = serializeFunctionExpression(expr);
       if (indices != null) {
         ints.addAll(serializeFunctionExpression(expr));
         operations.add(UnlinkedExprOperation.pushLocalFunctionReference);
       } else {
         // Invalid expression; just push null.
         operations.add(UnlinkedExprOperation.pushNull);
       }
@@ skipping 129 matching lines @@
       operations.add(UnlinkedExprOperation.lessEqual);
     } else if (operator == TokenType.PERCENT) {
       operations.add(UnlinkedExprOperation.modulo);
     } else if (operator == TokenType.QUESTION_QUESTION) {
       operations.add(UnlinkedExprOperation.ifNull);
     } else {
       throw new StateError('Unknown operator: $operator');
     }
   }
 
-  void _serializeCascadeExpression(CascadeExpression expr) {
-    _serialize(expr.target);
-    for (Expression section in expr.cascadeSections) {
-      operations.add(UnlinkedExprOperation.cascadeSectionBegin);
-      _serialize(section);
-      operations.add(UnlinkedExprOperation.cascadeSectionEnd);
-    }
-  }
-
   void _serializeListLiteral(ListLiteral expr) {
     List<Expression> elements = expr.elements;
     elements.forEach(_serialize);
     ints.add(elements.length);
     if (expr.typeArguments != null &&
         expr.typeArguments.arguments.length == 1) {
       references.add(serializeTypeName(expr.typeArguments.arguments[0]));
       operations.add(UnlinkedExprOperation.makeTypedList);
     } else {
       operations.add(UnlinkedExprOperation.makeUntypedList);
@@ skipping 131 matching lines @@
     if (typeArguments == null) {
       ints.add(0);
     } else {
       ints.add(typeArguments.arguments.length);
       for (TypeAnnotation type in typeArguments.arguments) {
         references.add(serializeTypeName(type));
       }
     }
   }
 }