[Libreoffice] [PATCH] [REVIEW-3-4] fdo#39950 report builder segfault during copy/paste

Attached patch is a backport of commit
538190e0ea142d0a7da244809c66241379d4d91b
in master by Caolán McNamara.
The only change wrt to master is in whitespace in context lines (tabs
vs spaces...)

It fixes fdo#39950, "most annoying" and severity "critical": when
copy/pasting (or drag'n dropping across section boundaries) a control
in report builder, LibreOffice segfaults.

I've tested this patch on libreoffice-3-4 (and on master).

Please apply to libreoffice-3-4.

-- 
Lionel

From 28db081efcf00d14f4ae8c8b7e156af7521030f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Fri, 25 Nov 2011 20:16:36 +0000
Subject: [PATCH] Resolves: fdo#39950 fix dnd crash from default assignment
 operators

Signed-off-by: Lionel Elie Mamane <lionel@mamane.lu>
---
 reportdesign/inc/RptObject.hxx             |    4 ++
 reportdesign/source/core/sdr/RptObject.cxx |   58 ++++++++++++++++++----------
 2 files changed, 41 insertions(+), 21 deletions(-)

diff --git a/reportdesign/inc/RptObject.hxx b/reportdesign/inc/RptObject.hxx
index d58950b..e24d51f 100644
--- a/reportdesign/inc/RptObject.hxx
+++ b/reportdesign/inc/RptObject.hxx
@@ -224,6 +224,8 @@ public:
     virtual OOle2Obj* Clone() const;
     virtual void initializeOle();
 
+    OOle2Obj& operator=(const OOle2Obj& rObj);
+
     void initializeChart( const ::com::sun::star::uno::Reference< 
::com::sun::star::frame::XModel>& _xModel);
 };
 
@@ -275,6 +277,8 @@ public:
     virtual sal_uInt32 GetObjInventor() const;
     virtual OUnoObject* Clone() const;
 
+    OUnoObject& operator=(const OUnoObject& rObj);
+
 private:
     void    impl_setReportComponent_nothrow();
     void    impl_initializeModel_nothrow();
diff --git a/reportdesign/source/core/sdr/RptObject.cxx b/reportdesign/source/core/sdr/RptObject.cxx
index 1f6a01a..80d56cb 100644
--- a/reportdesign/source/core/sdr/RptObject.cxx
+++ b/reportdesign/source/core/sdr/RptObject.cxx
@@ -941,18 +941,24 @@ uno::Reference< uno::XInterface > OUnoObject::getUnoShape()
 {
     return OObjectBase::getUnoShapeOf( *this );
 }
-// -----------------------------------------------------------------------------
+
+OUnoObject& OUnoObject::operator=(const OUnoObject& rObj)
+{
+    if( this == &rObj )
+        return *this;
+    SdrUnoObj::operator=(rObj);
+
+    Reference<XPropertySet> xSource(const_cast<OUnoObject&>(rObj).getUnoShape(), uno::UNO_QUERY);
+    Reference<XPropertySet> xDest(getUnoShape(), uno::UNO_QUERY);
+    if ( xSource.is() && xDest.is() )
+        comphelper::copyProperties(xSource.get(), xDest.get());
+
+    return *this;
+}
+
 OUnoObject* OUnoObject::Clone() const
 {
-    OUnoObject* pClone = CloneHelper< OUnoObject >();
-    if ( pClone )
-    {
-        Reference<XPropertySet> 
xSource(const_cast<OUnoObject*>(this)->getUnoShape(),uno::UNO_QUERY);
-        Reference<XPropertySet> xDest(pClone->getUnoShape(),uno::UNO_QUERY);
-        if ( xSource.is() && xDest.is() )
-            comphelper::copyProperties(xSource.get(),xDest.get());
-    }
-    return pClone;
+    return CloneHelper< OUnoObject >();
 }
 //----------------------------------------------------------------------------
 // OOle2Obj
@@ -1128,22 +1134,32 @@ uno::Reference< chart2::data::XDatabaseDataProvider > 
lcl_getDataProvider(const
     }
     return xSource;
 }
-// -----------------------------------------------------------------------------
-// Clone() soll eine komplette Kopie des Objektes erzeugen.
-OOle2Obj* OOle2Obj::Clone() const
+
+OOle2Obj& OOle2Obj::operator=(const OOle2Obj& rObj)
 {
-    OOle2Obj* pObj = CloneHelper< OOle2Obj >();
-    OReportModel* pRptModel = static_cast<OReportModel*>(GetModel());
-    svt::EmbeddedObjectRef::TryRunningState( pObj->GetObjRef() );
-    pObj->impl_createDataProvider_nothrow(pRptModel->getReportDefinition().get());
+    if( this == &rObj )
+        return *this;
+    SdrOle2Obj::operator=(rObj);
     
-    uno::Reference< chart2::data::XDatabaseDataProvider > xSource( 
lcl_getDataProvider(GetObjRef()) );
-    uno::Reference< chart2::data::XDatabaseDataProvider > xDest( 
lcl_getDataProvider(pObj->GetObjRef()) );
+    OReportModel* pRptModel = static_cast<OReportModel*>(rObj.GetModel());
+    svt::EmbeddedObjectRef::TryRunningState( GetObjRef() );
+    impl_createDataProvider_nothrow(pRptModel->getReportDefinition().get());
+
+    uno::Reference< chart2::data::XDatabaseDataProvider > xSource( 
lcl_getDataProvider(rObj.GetObjRef()) );
+    uno::Reference< chart2::data::XDatabaseDataProvider > xDest( lcl_getDataProvider(GetObjRef()) 
);
     if ( xSource.is() && xDest.is() )
         comphelper::copyProperties(xSource.get(),xDest.get());
 
-    pObj->initializeChart(pRptModel->getReportDefinition().get());
-    return pObj;
+    initializeChart(pRptModel->getReportDefinition().get());
+
+    return *this;
+}
+
+// -----------------------------------------------------------------------------
+// Clone() soll eine komplette Kopie des Objektes erzeugen.
+OOle2Obj* OOle2Obj::Clone() const
+{
+    return CloneHelper< OOle2Obj >();
 }
 // -----------------------------------------------------------------------------
 void OOle2Obj::impl_createDataProvider_nothrow(const uno::Reference< frame::XModel>& _xModel)
-- 
1.7.7.3