https://code.google.com/p/dart/issues/detail?id=223

compiler/java/com/google/dart/compiler/parser/DartParser.java

Index: compiler/java/com/google/dart/compiler/parser/DartParser.java
===================================================================
--- compiler/java/com/google/dart/compiler/parser/DartParser.java	(revision 1034)
+++ compiler/java/com/google/dart/compiler/parser/DartParser.java	(working copy)
@@ -870,7 +870,7 @@
       modifiers = modifiers.makeNative();
       function = new DartFunction(formals, parseNativeBlock(modifiers), null);
     } else {
-      function = new DartFunction(formals, parseBlock(), null);
+      function = new DartFunction(formals, parseFunctionStatementBody(true), null);
     }
     doneWithoutConsuming(function);
     return DartMethodDefinition.create(name, function, modifiers, null, typeParameters);