1 files changed, 54 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/StaticAnalyzer/Checkers/TaintTesterChecker.cpp b/contrib/llvm-project/clang/lib/StaticAnalyzer/Checkers/TaintTesterChecker.cpp
new file mode 100644
index 000000000000..acf4e833095b
--- /dev/null
+++ b/contrib/llvm-project/clang/lib/StaticAnalyzer/Checkers/TaintTesterChecker.cpp
@@ -0,0 +1,54 @@
+//== TaintTesterChecker.cpp ----------------------------------- -*- C++ -*--=//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This checker can be used for testing how taint data is propagated.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/StaticAnalyzer/Checkers/BuiltinCheckerRegistration.h"
+#include "clang/StaticAnalyzer/Checkers/Taint.h"
+#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
+#include "clang/StaticAnalyzer/Core/Checker.h"
+#include "clang/StaticAnalyzer/Core/CheckerManager.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
+
+using namespace clang;
+using namespace ento;
+using namespace taint;
+
+namespace {
+class TaintTesterChecker : public Checker<check::PostStmt<Expr>> {
+  const BugType BT{this, "Tainted data", "General"};
+
+public:
+  void checkPostStmt(const Expr *E, CheckerContext &C) const;
+};
+}
+
+void TaintTesterChecker::checkPostStmt(const Expr *E,
+                                       CheckerContext &C) const {
+  ProgramStateRef State = C.getState();
+  if (!State)
+    return;
+
+  if (isTainted(State, E, C.getLocationContext())) {
+    if (ExplodedNode *N = C.generateNonFatalErrorNode()) {
+      auto report = std::make_unique<PathSensitiveBugReport>(BT, "tainted", N);
+      report->addRange(E->getSourceRange());
+      C.emitReport(std::move(report));
+    }
+  }
+}
+
+void ento::registerTaintTesterChecker(CheckerManager &mgr) {
+  mgr.registerChecker<TaintTesterChecker>();
+}
+
+bool ento::shouldRegisterTaintTesterChecker(const CheckerManager &mgr) {
+  return true;
+}