1 files changed, 66 insertions, 0 deletions
diff --git a/compilerplugins/clang/store/optvalue.cxx b/compilerplugins/clang/store/optvalue.cxx
new file mode 100644
index 0000000000..2b703e194f
--- /dev/null
+++ b/compilerplugins/clang/store/optvalue.cxx
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * Based on LLVM/Clang.
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ */
+
+#include <cassert>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include "config_clang.h"
+#include "plugin.hxx"
+#include "check.hxx"
+
+/*
+*/
+
+namespace
+{
+class OptValue : public loplugin::FilteringPlugin<OptValue>
+{
+public:
+    explicit OptValue(loplugin::InstantiationData const& data)
+        : FilteringPlugin(data)
+    {
+    }
+
+    virtual bool preRun() override { return true; }
+
+    virtual void run() override
+    {
+        if (preRun())
+            TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+    }
+
+    bool VisitCXXMemberCallExpr(const CXXMemberCallExpr*);
+};
+
+bool OptValue::VisitCXXMemberCallExpr(const CXXMemberCallExpr* topExpr)
+{
+    if (ignoreLocation(topExpr))
+        return true;
+    const CXXMethodDecl* methodDecl = topExpr->getMethodDecl();
+    if (!methodDecl)
+        return true;
+    if (!methodDecl->getIdentifier() || methodDecl->getName() != "value")
+        return true;
+    auto expr1 = topExpr->getImplicitObjectArgument()->IgnoreImpCasts();
+    if (!isa<MaterializeTemporaryExpr>(expr1))
+        return true;
+
+    report(DiagnosticsEngine::Warning, "call to OptValue::value()", topExpr->getBeginLoc());
+
+    return true;
+}
+
+loplugin::Plugin::Registration<OptValue> optvalue("optvalue", false);
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */