Step next should respect do/while condition block.

src/codegen.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 51 matching lines @@
 //   ComputeCallInitializeInLoop
 //   ProcessDeclarations
 //   DeclareGlobals
 //   FindInlineRuntimeLUT
 //   CheckForInlineRuntimeCall
 //   PatchInlineRuntimeEntry
 //   AnalyzeCondition
 //   CodeForFunctionPosition
 //   CodeForReturnPosition
 //   CodeForStatementPosition
+//   CodeForDoWhileConditionPosition
 //   CodeForSourcePosition
 
 
 // Mode to overwrite BinaryExpression values.
 enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT };
 
 // Types of uncatchable exceptions.
 enum UncatchableExceptionType { OUT_OF_MEMORY, TERMINATION };
 
 
@@ skipping 335 matching lines @@
     PrintF("ArgumentsAccessStub (type %d)\n", type_);
   }
 #endif
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_