================
@@ -0,0 +1,273 @@
+#include "clang/Analysis/Analyses/LifetimeSafety/LifetimeAnnotations.h"
+#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
+#include "clang/StaticAnalyzer/Core/Checker.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CallDescription.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CallEvent.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace clang;
+using namespace ento;
+
+REGISTER_SET_FACTORY_WITH_PROGRAMSTATE(LifetimeSourceSet, const MemRegion *)
+REGISTER_MAP_WITH_PROGRAMSTATE(LifetimeBoundMap, SymbolRef, LifetimeSourceSet)
+
+REGISTER_MAP_WITH_PROGRAMSTATE(LifetimeBoundMapVal, const MemRegion *,
+ LifetimeSourceSet)
+
+namespace {
+class LifetimeAnnotations
+ : public Checker<check::PostCall, check::EndFunction, eval::Call> {
+public:
+ void checkPostCall(const CallEvent &Call, CheckerContext &C) const;
+ void printState(raw_ostream &Out, ProgramStateRef State, const char *NL,
+ const char *Sep) const override;
+ bool evalCall(const CallEvent &Call, CheckerContext &C) const;
+ void analyzerLifetimeBound(const CallEvent &Call, const CallExpr *,
+ CheckerContext &C) const;
+ ProgramStateRef bindValues(ProgramStateRef State, SymbolRef RetValSym,
+ SVal RetVal, const MemRegion *Source) const;
+ bool isSourceDangle(const MemRegion *Source, ProgramStateRef State,
+ CheckerContext &C) const;
+ void reportDanglingSource(const MemRegion *Region, ExplodedNode *N,
+ CheckerContext &C) const;
+
+ template <typename MapTy, typename KeyTy>
+ void checkReturnedBorrower(const MapTy &Map, const KeyTy RetKey,
+ ProgramStateRef State, ExplodedNode *N,
+ CheckerContext &C) const;
+ void checkEndFunction(const ReturnStmt *RS, CheckerContext &C) const;
+
+ const BugType BugMsg{this, "LifetimeAnnotations", "LifetimeBound"};
+
+ using FnCheck = void (LifetimeAnnotations::*)(const CallEvent &Call,
+ const CallExpr *,
+ CheckerContext &C) const;
+
+ const CallDescriptionMap<FnCheck> Callbacks = {
+ {{CDM::SimpleFunc, {"clang_analyzer_lifetime_bound"}},
+ &LifetimeAnnotations::analyzerLifetimeBound},
+ };
+};
+
+} // namespace
+
+ProgramStateRef LifetimeAnnotations::bindValues(ProgramStateRef State,
+ SymbolRef RetValSym,
----------------
Xazax-hun wrote:
We still takte RetValSym, couldn't we get that as well from the RetVal?
https://github.com/llvm/llvm-project/pull/200145
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