Enable -Wnon-virtual-dtor for GCC 4.6

...which has the necessary features to support it.

Change a lot of classes to either contain a protected non-virtual dtor
(which is backwards compatible, so even works for cppumaker-generated
UNO headers) or a public virtual one.

cppuhelper/propertysetmixin.hxx still needs to disable the warning, as
the relevant class has a non-virtual dtor but friends, which would still
cause GCC to warn.

Includes a patch for libcmis, intended to be upstreamed.

6 files changed, 24 insertions, 0 deletions

diff --git a/sfx2/inc/sfx2/docmacromode.hxx b/sfx2/inc/sfx2/docmacromode.hxx
index 48b58b4ecd9b..a9f2a9dfeeed 100644
--- a/sfx2/inc/sfx2/docmacromode.hxx
+++ b/sfx2/inc/sfx2/docmacromode.hxx
@@ -192,6 +192,9 @@ namespace sfx2
                     showBrokenSignatureWarning(
                         const ::com::sun::star::uno::Reference< ::com::sun::star::task::XInteractionHandler >& _rxInteraction
                     ) const = 0;
+
+    protected:
+        ~IMacroDocumentAccess() {}
     };
 
     //====================================================================
diff --git a/sfx2/inc/sfx2/docstoragemodifylistener.hxx b/sfx2/inc/sfx2/docstoragemodifylistener.hxx
index b6ac0da8becb..3bf32be455cb 100644
--- a/sfx2/inc/sfx2/docstoragemodifylistener.hxx
+++ b/sfx2/inc/sfx2/docstoragemodifylistener.hxx
@@ -53,6 +53,9 @@ namespace sfx2
     public:
         /// indicates the root or a sub storage of the document has been modified
         virtual void storageIsModified() = 0;
+
+    protected:
+        ~IModifiableDocument() {}
     };
 
     //====================================================================
diff --git a/sfx2/inc/sfx2/itemwrapper.hxx b/sfx2/inc/sfx2/itemwrapper.hxx
index 55d7c9b2a4d3..b440b7cf90b8 100644
--- a/sfx2/inc/sfx2/itemwrapper.hxx
+++ b/sfx2/inc/sfx2/itemwrapper.hxx
@@ -105,6 +105,8 @@ public:
 
     inline explicit     SingleItemWrapper( sal_uInt16 nSlot ) : mnSlot( nSlot ) {}
 
+    virtual             ~SingleItemWrapper() {}
+
     /** Returns the SID this wrapper works on. */
     inline sal_uInt16       GetSlotId() const { return mnSlot; }
 
@@ -146,6 +148,8 @@ public:
     inline explicit     ValueItemWrapper( sal_uInt16 nSlot ) :
                             SingleItemWrapper< ItemT, ValueT >( nSlot ) {}
 
+    virtual             ~ValueItemWrapper() {}
+
     virtual ValueT      GetItemValue( const ItemT& rItem ) const
                             { return static_cast< ValueT >( rItem.GetValue() ); }
     virtual void        SetItemValue( ItemT& rItem, ValueT aValue ) const
@@ -171,6 +175,8 @@ public:
     inline explicit     IdentItemWrapper( sal_uInt16 nSlot ) :
                             SingleItemWrapper< ItemT, const ItemT& >( nSlot ) {}
 
+    virtual             ~IdentItemWrapper() {}
+
     virtual const ItemT& GetItemValue( const ItemT& rItem ) const
                             { return rItem; }
     virtual void        SetItemValue( ItemT& rItem, const ItemT& rValue ) const
diff --git a/sfx2/inc/sfx2/sfxstatuslistener.hxx b/sfx2/inc/sfx2/sfxstatuslistener.hxx
index 2fa370e717b7..e2ff595e80d8 100644
--- a/sfx2/inc/sfx2/sfxstatuslistener.hxx
+++ b/sfx2/inc/sfx2/sfxstatuslistener.hxx
@@ -46,6 +46,9 @@ class SfxStatusListenerInterface
 {
     public:
         virtual void StateChanged( sal_uInt16 nSlotId, SfxItemState eState, const SfxPoolItem* pState ) = 0;
+
+    protected:
+        ~SfxStatusListenerInterface() {}
 };
 
 class SFX2_DLLPUBLIC SfxStatusListener :
diff --git a/sfx2/inc/sfx2/taskpane.hxx b/sfx2/inc/sfx2/taskpane.hxx
index fe0f2bb788c7..ca3edb5de682 100644
--- a/sfx2/inc/sfx2/taskpane.hxx
+++ b/sfx2/inc/sfx2/taskpane.hxx
@@ -55,6 +55,9 @@ namespace sfx2
     {
     public:
         virtual void ActivateToolPanel( const ::rtl::OUString& i_rPanelURL ) = 0;
+
+    protected:
+        ~ITaskPaneToolPanelAccess() {}
     };
 
     //==================================================================================================================
@@ -95,6 +98,9 @@ namespace sfx2
                         const ::rtl::OUString& i_rLHS,
                         const ::rtl::OUString& i_rRHS
                     ) const = 0;
+
+    protected:
+        ~IToolPanelCompare() {}
     };
 
     //==================================================================================================================
diff --git a/sfx2/inc/sfx2/templdlg.hxx b/sfx2/inc/sfx2/templdlg.hxx
index e235e760698c..02132266e6d3 100644
--- a/sfx2/inc/sfx2/templdlg.hxx
+++ b/sfx2/inc/sfx2/templdlg.hxx
@@ -47,6 +47,9 @@ class ISfxTemplateCommon
 public:
     virtual SfxStyleFamily GetActualFamily() const = 0;
     virtual String GetSelectedEntry() const = 0;
+
+protected:
+    ~ISfxTemplateCommon() {}
 };
 
 // class SfxTemplateDialog -----------------------------------------------