1 files changed, 58 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/referencecasting.cxx b/compilerplugins/clang/test/referencecasting.cxx
index 0272bc89cc98..beb69cc86616 100644
--- a/compilerplugins/clang/test/referencecasting.cxx
+++ b/compilerplugins/clang/test/referencecasting.cxx
@@ -9,16 +9,22 @@
 
 #include "sal/config.h"
 
+#include "com/sun/star/uno/Sequence.hxx"
 #include "com/sun/star/uno/XInterface.hpp"
 #include "com/sun/star/io/XStreamListener.hpp"
+#include "com/sun/star/io/XInputStream.hpp"
 #include "com/sun/star/lang/XTypeProvider.hpp"
 #include "com/sun/star/lang/XComponent.hpp"
+#include "cppuhelper/implbase.hxx"
 #include "cppuhelper/weak.hxx"
+#include "rtl/ref.hxx"
 
 void test1(const css::uno::Reference<css::io::XStreamListener>& a)
 {
     // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
     css::uno::Reference<css::lang::XEventListener> b(a, css::uno::UNO_QUERY);
+    // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+    auto c = css::uno::Reference<css::lang::XEventListener>::query(a);
 }
 
 namespace test2
@@ -77,6 +83,33 @@ void test(css::uno::Reference<css::io::XStreamListener> l)
     // expected-error@+1 {{unnecessary get() call [loplugin:referencecasting]}}
     a.set(l.get(), css::uno::UNO_QUERY);
 }
+
+class FooStream : public css::io::XStreamListener
+{
+    virtual ~FooStream();
+};
+void test(rtl::Reference<FooStream> l)
+{
+    // expected-error@+1 {{unnecessary get() call [loplugin:referencecasting]}}
+    css::uno::Reference<css::io::XStreamListener> a(l.get());
+    // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+    a.set(l.get(), css::uno::UNO_QUERY);
+    // expected-error@+1 {{unnecessary get() call [loplugin:referencecasting]}}
+    a.set(l.get());
+    // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+    css::uno::Reference<css::io::XStreamListener> b(l.get(), css::uno::UNO_QUERY);
+    // no warning expected
+    css::uno::Reference<css::lang::XTypeProvider> c(l.get(), css::uno::UNO_QUERY);
+    // no warning expected
+    css::uno::Reference<css::io::XStreamListener> a2 = l;
+    (void)a2;
+}
+css::uno::Sequence<css::uno::Reference<css::io::XStreamListener>> getContinuations()
+{
+    rtl::Reference<FooStream> noel1;
+    // expected-error@+1 {{unnecessary get() call [loplugin:referencecasting]}}
+    return { noel1.get() };
+}
 }
 
 namespace test8
@@ -156,4 +189,29 @@ void test14(css::uno::Sequence<css::uno::Reference<css::io::XStreamListener>> se
     }
 }
 
+namespace test15
+{
+class Foo : public cppu::WeakImplHelper<css::lang::XComponent, css::io::XInputStream>
+{
+    virtual ~Foo();
+    css::uno::Reference<css::lang::XTypeProvider> bar()
+    {
+        // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+        return css::uno::Reference<css::lang::XTypeProvider>(
+            static_cast<css::lang::XTypeProvider*>(this), css::uno::UNO_QUERY);
+    }
+    css::uno::Reference<css::io::XInputStream> bar2()
+    {
+        // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+        return css::uno::Reference<css::io::XInputStream>(static_cast<css::io::XInputStream*>(this),
+                                                          css::uno::UNO_QUERY);
+    }
+    css::uno::Reference<css::io::XInputStream> bar3()
+    {
+        // expected-error@+1 {{the source reference is already a subtype of the destination reference, just use = [loplugin:referencecasting]}}
+        return css::uno::Reference<css::io::XInputStream>(*this, css::uno::UNO_QUERY);
+    }
+};
+}
+
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