Report compile time error if const class has non-const initializer

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 
 #include "lib/invocation_mirror.h"
 #include "platform/utils.h"
 #include "vm/bootstrap.h"
 #include "vm/class_finalizer.h"
@@ skipping 2361 matching lines @@
         initialized_fields->Add(&field);
       }
       AstNode* init_expr = NULL;
       if (current_class().raw() != field.origin()) {
         init_expr = ParseExternalInitializedField(field);
       } else {
         SetPosition(field.token_pos());
         ASSERT(IsIdentifier());
         ConsumeToken();
         ExpectToken(Token::kASSIGN);
-        if (field.is_const()) {
+        if (current_class().is_const()) {
+          // If the class has a const contructor, the initializer
+          // expression must be a compile-time constant.
           init_expr = ParseConstExpr();
         } else {
           intptr_t expr_pos = TokenPos();
           init_expr = ParseExpr(kAllowConst, kConsumeCascades);
           if (init_expr->EvalConstExpr() != NULL) {
             init_expr = new LiteralNode(field.token_pos(),
                                         EvaluateConstExpr(expr_pos, init_expr));
           }
         }
       }
@@ skipping 8930 matching lines @@
 void Parser::SkipQualIdent() {
   ASSERT(IsIdentifier());
   ConsumeToken();
   if (CurrentToken() == Token::kPERIOD) {
     ConsumeToken();  // Consume the kPERIOD token.
     ExpectIdentifier("identifier expected after '.'");
   }
 }
 
 }  // namespace dart