================
@@ -1096,6 +1098,47 @@ class StopTrackingCallback final : public SymbolVisitor {
return true;
}
};
+
+/// EscapeTrackedCallback - A SymbolVisitor that marks allocated symbols as
+/// escaped.
+///
+/// This visitor is used to suppress false positive leak reports when smart
+/// pointers are nested in temporary objects passed by value to functions. When
+/// the analyzer can't see the destructor calls for temporary objects, it may
+/// incorrectly report leaks for memory that will be properly freed by the
smart
+/// pointer destructors.
+///
+/// The visitor traverses reachable symbols from a given set of memory regions
+/// (typically smart pointer field regions) and marks any allocated symbols as
+/// escaped. Escaped symbols are not reported as leaks by checkDeadSymbols.
+class EscapeTrackedCallback final : public SymbolVisitor {
+ ProgramStateRef State;
+
+ explicit EscapeTrackedCallback(ProgramStateRef S) : State(std::move(S)) {}
+
+public:
+ /// Escape tracked regions reachable from the given roots.
+ static ProgramStateRef
+ EscapeTrackedRegionsReachableFrom(ArrayRef<const MemRegion *> Roots,
+ ProgramStateRef State) {
+ EscapeTrackedCallback Visitor(State);
+ for (const MemRegion *R : Roots) {
+ State->scanReachableSymbols(loc::MemRegionVal(R), Visitor);
+ }
+ return Visitor.getState();
+ }
+
+ ProgramStateRef getState() const { return State; }
----------------
steakhal wrote:
I suppose we no longer need this.
https://github.com/llvm/llvm-project/pull/152751
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