[kernel] debugging for in statement

runtime/vm/kernel_binary.cc

 // 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.
 #if !defined(DART_PRECOMPILED_RUNTIME)
 
 #include "platform/globals.h"
 #include "vm/flags.h"
 #include "vm/growable_array.h"
 #include "vm/kernel.h"
 #include "vm/kernel_to_il.h"
@@ skipping 1543 matching lines @@
 }
 
 
 ForInStatement* ForInStatement::ReadFrom(Reader* reader, bool is_async) {
   TRACE_READ_OFFSET();
   VariableScope<ReaderHelper> vars(reader->helper());
   PositionScope scope(reader);
 
   ForInStatement* forinstmt = new ForInStatement();
   forinstmt->is_async_ = is_async;
+  forinstmt->position_ = reader->ReadPosition();
   forinstmt->variable_ = VariableDeclaration::ReadFromImpl(reader);
   forinstmt->iterable_ = Expression::ReadFrom(reader);
   forinstmt->body_ = Statement::ReadFrom(reader);
   forinstmt->end_position_ = reader->max_position();
-  forinstmt->position_ = reader->min_position();
+  if (!forinstmt->position_.IsReal()) {
+    forinstmt->position_ = reader->min_position();
+  }
+  forinstmt->variable_->set_end_position(forinstmt->position_);
 
   return forinstmt;
 }
 
 
 SwitchStatement* SwitchStatement::ReadFrom(Reader* reader) {
   TRACE_READ_OFFSET();
   SwitchCaseScope<ReaderHelper> scope(reader->helper());
   SwitchStatement* stmt = new SwitchStatement();
   stmt->condition_ = Expression::ReadFrom(reader);
@@ skipping 353 matching lines @@
 
 kernel::Program* ReadPrecompiledKernelFromBuffer(const uint8_t* buffer,
                                                  intptr_t buffer_length) {
   kernel::Reader reader(buffer, buffer_length);
   return kernel::Program::ReadFrom(&reader);
 }
 
 
 }  // namespace dart
 #endif  // !defined(DART_PRECOMPILED_RUNTIME)