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DataFlow: Add uniqueParameterNodePositionExclude

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Rasmus Wriedt Larsen
2023-01-17 11:55:49 +01:00
parent 2b0a5fd5d1
commit a0b1c2ea79
8 changed files with 48 additions and 0 deletions
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6
cpp/ql/lib/semmle/code/cpp/dataflow/internal/DataFlowImplConsistency.qll
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@@ -50,6 +50,11 @@ module Consistency {
predicate uniqueParameterNodeAtPositionExclude(DataFlowCallable c, ParameterPosition pos, Node p) {
none()
}
/** Holds if `(c, pos, p)` should be excluded from the consistency test `uniqueParameterNodePosition`. */
predicate uniqueParameterNodePositionExclude(DataFlowCallable c, ParameterPosition pos, Node p) {
none()
}
}
private class RelevantNode extends Node {
@@ -260,6 +265,7 @@ module Consistency {
query predicate uniqueParameterNodePosition(
DataFlowCallable c, ParameterPosition pos, Node p, string msg
) {
not any(ConsistencyConfiguration conf).uniqueParameterNodePositionExclude(c, pos, p) and
isParameterNode(p, c, pos) and
not exists(unique(ParameterPosition pos0 | isParameterNode(p, c, pos0))) and
msg = "Parameter node with multiple positions."