diff --git a/compilerplugins/clang/test/redundantcast.cxx b/compilerplugins/clang/test/redundantcast.cxx
new file mode 100644
index 000000000000..7af9716fa27c
--- /dev/null
+++ b/compilerplugins/clang/test/redundantcast.cxx
@@ -0,0 +1,32 @@
+/* -*- 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/.
+ */
+
+void f1(char *) {}
+void f2(char const *) {}
+
+int main() {
+    char * p1;
+    char const * p2;
+    p1 = nullptr;
+    p2 = "";
+    f1(const_cast<char *>(p1)); // expected-error {{redundant const_cast from 'char *' to 'char *' [loplugin:redundantcast]}}
+    f1(const_cast<char * const>(p1)); // expected-error {{redundant const_cast from 'char *' to 'char *const' [loplugin:redundantcast]}}
+    f1(const_cast<char *>(p2));
+    f1(const_cast<char * const>(p2));
+    f2(const_cast<char *>(p1)); // expected-error {{redundant const_cast from 'char *' to 'char *', result is implictly cast to 'const char *' [loplugin:redundantcast]}} expected-error {{redundant const_cast from 'char *' to 'char *' [loplugin:redundantcast]}}
+    f2(const_cast<char * const>(p1)); // expected-error {{redundant const_cast from 'char *' to 'char *', result is implictly cast to 'const char *' [loplugin:redundantcast]}} expected-error {{redundant const_cast from 'char *' to 'char *const' [loplugin:redundantcast]}}
+    f2(const_cast<char const *>(p1));
+    f2(const_cast<char const * const>(p1));
+    f2(const_cast<char *>(p2)); // expected-error {{redundant const_cast from 'const char *' to 'char *', result is implictly cast to 'const char *' [loplugin:redundantcast]}}
+    f2(const_cast<char * const>(p2)); // expected-error {{redundant const_cast from 'const char *' to 'char *', result is implictly cast to 'const char *' [loplugin:redundantcast]}}
+    f2(const_cast<char const *>(p2)); // expected-error {{redundant const_cast from 'const char *' to 'const char *' [loplugin:redundantcast]}}
+    f2(const_cast<char const * const>(p2)); // expected-error {{redundant const_cast from 'const char *' to 'const char *const' [loplugin:redundantcast]}}
+}
+
+/* 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 7840b1e0ff1b..85de035974c6 100644
--- a/solenv/CompilerTest_compilerplugins_clang.mk
+++ b/solenv/CompilerTest_compilerplugins_clang.mk
@@ -17,6 +17,7 @@ $(eval $(call gb_CompilerTest_add_exception_objects,compilerplugins_clang, \
     compilerplugins/clang/test/oslendian-1 \
     compilerplugins/clang/test/oslendian-2 \
     compilerplugins/clang/test/oslendian-3 \
+    compilerplugins/clang/test/redundantcast \
     compilerplugins/clang/test/salbool \
     compilerplugins/clang/test/stringconstant \
     compilerplugins/clang/test/unnecessaryoverride-dtor \