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C++: Don't infer lambda calls when there is a static dispatch to a source or summary callable.

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This commit is contained in:
Mathias Vorreiter Pedersen
2025-01-28 18:51:31 +00:00
parent a35ed57848
commit be2777bc31
1 changed files with 6 additions and 1 deletions
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7
cpp/ql/lib/semmle/code/cpp/ir/dataflow/internal/DataFlowPrivate.qll
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@@ -1339,7 +1339,12 @@ predicate lambdaCreation(Node creation, LambdaCallKind kind, DataFlowCallable c)
/** Holds if `call` is a lambda call of kind `kind` where `receiver` is the lambda expression. */
predicate lambdaCall(DataFlowCall call, LambdaCallKind kind, Node receiver) {
(
call.(SummaryCall).getReceiver() = receiver.(FlowSummaryNode).getSummaryNode() or
call.(SummaryCall).getReceiver() = receiver.(FlowSummaryNode).getSummaryNode()
or
// No need to infer a lambda call if we already have a static dispatch target.
// We only need to check this in the disjunct since a `SummaryCall` never
// has a result for `getStaticCallTarget`.
not exists(call.getStaticCallTarget()) and
call.asCallInstruction().getCallTargetOperand() = receiver.asOperand()
) and
exists(kind)