C++: Comments.

cpp/ql/lib/semmle/code/cpp/dataflow/internal/FlowSummaryImpl.qll

@@ -119,6 +119,7 @@ module SourceSinkInterpretationInput implements
     DataFlowCall asCall() {
       this.asElement() = result.asCallInstruction().getUnconvertedResultExpression()
       // TODO: or summary call?
+      // ??? this.asNode().(FlowSummaryNode).getSummaryNode() = result.(SummaryCall).getReceiver()
     }
 
     /** Gets the callable that this node corresponds to, if any. */

cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowPrivate.qll

@@ -1161,7 +1161,12 @@ class SummaryCall extends DataFlowCall, TSummaryCall {
 
   SummaryCall() { this = TSummaryCall(c, receiver) }
 
-  /** Gets the data flow node that this call targets. */
+  /**
+   * Gets the data flow node that this call targets.
+   * OR
+   * Gets the data flow node that receives the result of the call.
+   * TODO: which is right?
+   */
   FlowSummaryImpl::Private::SummaryNode getReceiver() { result = receiver }
 
   //  override CallTargetOperand getCallTargetOperand() TODO

cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll

@@ -757,7 +757,7 @@ class FlowSummaryNode extends Node, TFlowSummaryNode {
    * TODO: QLDoc.
    */
   override DataFlowCallable getEnclosingCallable() {
-    result = TSummarizedCallable(this.getSummarizedCallable())
+    result = TSummarizedCallable(this.getSummarizedCallable()) // TODO: this doesn't look right.
   }
 
   override Location getLocationImpl() { result = this.getSummarizedCallable().getLocation() }