CodeQL library for C/C++
codeql/cpp-all 0.12.9 (changelog, source)
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Member predicate Configuration::isAdditionalTaintStep

Holds if taint may propagate from node1 to node2 in addition to the normal data-flow and taint steps. This step is only applicable in state1 and updates the flow state to state2.

predicate isAdditionalTaintStep(Node node1, FlowState state1, Node node2, FlowState state2)