1 files changed, 52 insertions, 0 deletions
diff --git a/compilerplugins/clang/stdfunction.cxx b/compilerplugins/clang/stdfunction.cxx
new file mode 100644
index 0000000000..43c61a0473
--- /dev/null
+++ b/compilerplugins/clang/stdfunction.cxx
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef LO_CLANG_SHARED_PLUGINS
+
+#include "check.hxx"
+#include "plugin.hxx"
+
+namespace
+{
+class StdFunction final : public loplugin::FilteringPlugin<StdFunction>
+{
+public:
+    explicit StdFunction(loplugin::InstantiationData const& data)
+        : FilteringPlugin(data)
+    {
+    }
+
+    bool VisitFunctionDecl(FunctionDecl const* decl)
+    {
+        if (ignoreLocation(decl))
+        {
+            return true;
+        }
+        if (!loplugin::ContextCheck(decl->getDeclContext()).StdOrNestedNamespace())
+        {
+            return true;
+        }
+        report(DiagnosticsEngine::Warning,
+               ("Do not declare a %select{function|function template|member function template"
+                " specialization|function template specialization}0 in namespace 'std'"),
+               decl->getLocation())
+            << decl->getTemplatedKind() << decl->getSourceRange();
+        return true;
+    }
+
+private:
+    void run() override { TraverseDecl(compiler.getASTContext().getTranslationUnitDecl()); }
+};
+
+static loplugin::Plugin::Registration<StdFunction> X("stdfunction");
+}
+
+#endif // LO_CLANG_SHARED_PLUGINS
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */