diff --git a/compilerplugins/clang/smartpointerderefaddress.cxx b/compilerplugins/clang/smartpointerderefaddress.cxx
new file mode 100644
index 000000000000..653bd66635fa
--- /dev/null
+++ b/compilerplugins/clang/smartpointerderefaddress.cxx
@@ -0,0 +1,91 @@
+/* -*- 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 <cassert>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <set>
+
+#include <clang/AST/CXXInheritance.h>
+
+#include "check.hxx"
+#include "plugin.hxx"
+
+/**
+ * Look for:
+ *     &(*x)
+ * when x is a smart pointer like unique_ptr. That can be transformed to:
+ *     x.get()
+ *
+ * This is important when x is null, because in that case *x is undefined behavior. This can lead to
+ * difficult bugs because the compiler will often let you get away with it, but some compilers might
+ * also take advantage of that to assume that x is never null and then optimise away chunks of code.
+ * See tdf#173585 for an example.
+ *
+ * Either way x.get() is easier to understand.
+ */
+
+namespace
+{
+class SmartPointerDerefAddress : public loplugin::FilteringPlugin<SmartPointerDerefAddress>
+{
+public:
+    explicit SmartPointerDerefAddress(loplugin::InstantiationData const& data)
+        : FilteringPlugin(data)
+    {
+    }
+
+    virtual void run() override
+    {
+        if (preRun())
+            TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
+    }
+
+    bool VisitUnaryOperator(UnaryOperator const*);
+};
+
+bool SmartPointerDerefAddress::VisitUnaryOperator(UnaryOperator const* unaryOperator)
+{
+    if (ignoreLocation(unaryOperator))
+        return true;
+    if (unaryOperator->getBeginLoc().isMacroID())
+        return true;
+    if (unaryOperator->getOpcode() != UO_AddrOf)
+        return true;
+    auto subExpr = unaryOperator->getSubExpr()->IgnoreParenImpCasts();
+    auto innerOp = dyn_cast<CXXOperatorCallExpr>(subExpr);
+    if (!innerOp || innerOp->getOperator() != OO_Star)
+        return true;
+
+    auto const tc = loplugin::TypeCheck(innerOp->getArg(0)->getType());
+
+    if (tc.ClassOrStruct("shared_ptr").StdNamespace()
+        || tc.ClassOrStruct("__shared_ptr_access").StdNamespace()
+        || tc.ClassOrStruct("unique_ptr").StdNamespace()
+        || tc.ClassOrStruct("UnoCursorPointer").Namespace("sw").GlobalNamespace())
+    {
+        report(DiagnosticsEngine::Warning,
+               "'*' followed by '&' operating on %0, rather use '.get()'",
+               unaryOperator->getBeginLoc())
+            << innerOp->getArg(0)->getType() << unaryOperator->getSourceRange();
+    }
+
+    return true;
+}
+
+loplugin::Plugin::Registration<SmartPointerDerefAddress>
+    smartpointerderefaddress("smartpointerderefaddress");
+
+} // namespace
+
+#endif // LO_CLANG_SHARED_PLUGINS
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/compilerplugins/clang/test/smartpointerderefaddress.cxx b/compilerplugins/clang/test/smartpointerderefaddress.cxx
new file mode 100644
index 000000000000..6dae64d22e1f
--- /dev/null
+++ b/compilerplugins/clang/test/smartpointerderefaddress.cxx
@@ -0,0 +1,42 @@
+/* -*- 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/.
+ */
+
+#include <sal/config.h>
+
+#include <memory>
+
+namespace sw
+{
+// Mockup of UnoCursorPointer because it’s probably difficult to include the header
+class UnoCursorPointer
+{
+public:
+    int& operator*() { return *m_pInteger; };
+
+private:
+    int* m_pInteger;
+};
+}
+
+int* function1(std::unique_ptr<int>& x)
+{
+    return &*x; // expected-error-re {{'*' followed by '&' operating on '{{.*}}unique_ptr{{.*}}', rather use '.get()' [loplugin:smartpointerderefaddress]}}
+}
+
+int* function2(std::shared_ptr<int>& x)
+{
+    return &*x; // expected-error-re {{'*' followed by '&' operating on '{{.*}}shared_ptr{{.*}}', rather use '.get()' [loplugin:smartpointerderefaddress]}}
+}
+
+int* function3(sw::UnoCursorPointer& x)
+{
+    return &*x; // expected-error-re {{'*' followed by '&' operating on '{{.*}}UnoCursorPointer{{.*}}', rather use '.get()' [loplugin:smartpointerderefaddress]}}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/solenv/CompilerTest_compilerplugins_clang.mk b/solenv/CompilerTest_compilerplugins_clang.mk
index 9a1dacbc5789..4a3ff84e2a89 100644
--- a/solenv/CompilerTest_compilerplugins_clang.mk
+++ b/solenv/CompilerTest_compilerplugins_clang.mk
@@ -84,6 +84,7 @@ $(eval $(call gb_CompilerTest_add_exception_objects,compilerplugins_clang, \
     compilerplugins/clang/test/simplifydynamiccast \
     compilerplugins/clang/test/simplifypointertobool \
     compilerplugins/clang/test/singlevalfields \
+    compilerplugins/clang/test/smartpointerderefaddress \
     compilerplugins/clang/test/staticconstexpr \
     compilerplugins/clang/test/staticconstfield \
     compilerplugins/clang/test/staticdynamic \