Fix a crash in dart2js where references to this in inlined initializers id not know what instructio…

sdk/lib/_internal/compiler/implementation/ssa/builder.dart

 // 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.
 
 part of ssa;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to override [Element.computeType] because our
  * optimizers may look at its declared type.
@@ skipping 1158 matching lines @@
         }
       });
 
       // Build the initializers in the context of the new constructor.
       TreeElements oldElements = elements;
       elements =
           compiler.enqueuer.resolution.getCachedElements(constructor);
 
       ClosureClassMap oldClosureData = localsHandler.closureData;
       Node node = constructor.parseNode(compiler);
-      localsHandler.closureData =
+      ClosureClassMap newClosureData =
           compiler.closureToClassMapper.computeClosureToClassMapping(
               constructor, node, elements);
+      // The [:this:] element now refers to the one in the new closure
+      // data, that is the [:this:] of the super constructor. We
+      // update the element to refer to the current [:this:].
+      localsHandler.updateLocal(newClosureData.thisElement,
+                                localsHandler.readThis());
+      localsHandler.closureData = newClosureData;
 
       params.orderedForEachParameter((Element parameterElement) {
         if (elements.isParameterChecked(parameterElement)) {
           addParameterCheckInstruction(parameterElement);
         }
       });
       localsHandler.enterScope(node, constructor);
       buildInitializers(constructor, constructors, fieldValues);
       localsHandler.closureData = oldClosureData;
       elements = oldElements;
@@ skipping 3803 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }