[kernel] debugging for in statement

runtime/vm/kernel_to_il.cc

Index: runtime/vm/kernel_to_il.cc
diff --git a/runtime/vm/kernel_to_il.cc b/runtime/vm/kernel_to_il.cc
index e817840567c9ea8c9600bd56c5488da07098fe54..698b930d140b81ec33f8a8c4255ff73cffc93dda 100644
--- a/runtime/vm/kernel_to_il.cc
+++ b/runtime/vm/kernel_to_il.cc
@@ -5600,8 +5600,8 @@ void FlowGraphBuilder::VisitForInStatement(ForInStatement* node) {
 
   const dart::String& iterator_getter = dart::String::ZoneHandle(
       Z, dart::Field::GetterSymbol(Symbols::Iterator()));
-  instructions +=
-      InstanceCall(TokenPosition::kNoSource, iterator_getter, Token::kGET, 1);
+  instructions += InstanceCall(node->iterable()->position(), iterator_getter,
+                               Token::kGET, 1);
   LocalVariable* iterator = scopes_->iterator_variables[for_in_depth_];
   instructions += StoreLocal(TokenPosition::kNoSource, iterator);
   instructions += Drop();
@@ -5610,7 +5610,7 @@ void FlowGraphBuilder::VisitForInStatement(ForInStatement* node) {
   ++loop_depth_;
   Fragment condition = LoadLocal(iterator);
   condition += PushArgument();
-  condition += InstanceCall(TokenPosition::kNoSource, Symbols::MoveNext(),
+  condition += InstanceCall(node->iterable()->position(), Symbols::MoveNext(),
                             Token::kILLEGAL, 1);
   TargetEntryInstr* body_entry;
   TargetEntryInstr* loop_exit;
@@ -5622,8 +5622,7 @@ void FlowGraphBuilder::VisitForInStatement(ForInStatement* node) {
   body += PushArgument();
   const dart::String& current_getter = dart::String::ZoneHandle(
       Z, dart::Field::GetterSymbol(Symbols::Current()));
-  body +=
-      InstanceCall(TokenPosition::kNoSource, current_getter, Token::kGET, 1);
+  body += InstanceCall(node->position(), current_getter, Token::kGET, 1);
   body +=
       StoreLocal(TokenPosition::kNoSource, LookupVariable(node->variable()));
   body += Drop();