crashtesting: exception during dtor

Change-Id: I9874778ba79540cfde32bf59c3a63ebb72889dc7
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/141215
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

include/sax/fshelper.hxx

@@ -50,6 +50,9 @@ public:
 
     ~FastSerializerHelper();
 
+    void startDocument();
+    void endDocument();
+
     /// Start an element. After the first argument there can be a number of (attribute, value) pairs.
     template<typename... Args>
     void startElement(sal_Int32 elementTokenId, sal_Int32 attribute, const char* value, Args &&... args)

oox/source/core/xmlfilterbase.cxx

@@ -697,6 +697,8 @@ writeCoreProperties( XmlFilterBase& rSelf, const Reference< XDocumentProperties
     }
 
     pCoreProps->endElementNS( XML_cp, XML_coreProperties );
+
+    pCoreProps->endDocument();
 }
 
 static void
@@ -819,6 +821,8 @@ writeAppProperties( XmlFilterBase& rSelf, const Reference< XDocumentProperties >
     }
 
     pAppProps->endElement( XML_Properties );
+
+    pAppProps->endDocument();
 }
 
 static void
@@ -937,6 +941,8 @@ writeCustomProperties( XmlFilterBase& rSelf, const Reference< XDocumentPropertie
         ++nIndex;
     }
     pAppProps->endElement( XML_Properties );
+
+    pAppProps->endDocument();
 }
 
 void XmlFilterBase::exportDocumentProperties( const Reference< XDocumentProperties >& xProperties, bool bSecurityOptOpenReadOnly )

oox/source/export/chartexport.cxx

@@ -874,6 +874,8 @@ void ChartExport::WriteChartObj( const Reference< XShape >& xShape, sal_Int32 nI
 
     SetFS( pChart );
     ExportContent();
+    SetFS( pFS );
+    pChart->endDocument();
 }
 
 void ChartExport::InitRangeSegmentationProperties( const Reference< chart2::XChartDocument > & xChartDoc )
@@ -1115,6 +1117,7 @@ void ChartExport::exportAdditionalShapes( const Reference< css::chart::XChartDoc
                 pDrawing->endElement(FSNS(XML_cdr, XML_relSizeAnchor));
             }
             pDrawing->endElement(FSNS(XML_c, XML_userShapes));
+            pDrawing->endDocument();
         }
     }
     catch (const uno::Exception&)

sax/source/tools/fshelper.cxx

@@ -17,6 +17,7 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <sal/log.hxx>
 #include <sax/fshelper.hxx>
 #include "fastserializer.hxx"
 
@@ -29,12 +30,27 @@ FastSerializerHelper::FastSerializerHelper(const Reference< io::XOutputStream >&
     mpSerializer(new FastSaxSerializer(xOutputStream))
 {
     if( bWriteHeader )
-        mpSerializer->startDocument();
+        startDocument();
+}
+
+void FastSerializerHelper::startDocument()
+{
+    mpSerializer->startDocument();
+}
+
+void FastSerializerHelper::endDocument()
+{
+    std::unique_ptr<FastSaxSerializer> xSerializer(std::move(mpSerializer));
+    xSerializer->endDocument();
 }
 
 FastSerializerHelper::~FastSerializerHelper()
 {
-    mpSerializer->endDocument();
+    if (mpSerializer)
+    {
+        assert(false && "call endDocument explicitly before dtor to avoid potential exceptions during dtor");
+        endDocument();
+    }
 }
 
 void FastSerializerHelper::startElement(sal_Int32 elementTokenId)

sc/source/filter/excel/xestream.cxx

@@ -1113,6 +1113,12 @@ bool XclExpXmlStream::exportDocument()
 
     PopStream();
     // Free all FSHelperPtr, to flush data before committing storage
+    for (auto& entry : maOpenedStreamMap)
+    {
+        if (!entry.second.second)
+            continue;
+        entry.second.second->endDocument();
+    }
     maOpenedStreamMap.clear();
 
     commitStorage();

sd/source/filter/eppt/pptx-epptooxml.cxx

@@ -499,8 +499,15 @@ bool PowerPointExport::exportDocument()
     WriteModifyVerifier();
 
     mPresentationFS->endElementNS(XML_p, XML_presentation);
+    mPresentationFS->endDocument();
     mPresentationFS.reset();
     // Free all FSHelperPtr, to flush data before committing storage
+    for (auto& serializer : mpSlidesFSArray)
+    {
+        if (!serializer)
+            continue;
+        serializer->endDocument();
+    }
     mpSlidesFSArray.clear();
 
     commitStorage();
@@ -1087,6 +1094,8 @@ void PowerPointExport::WriteAuthors()
     }
 
     pFS->endElementNS(XML_p, XML_cmAuthorLst);
+
+    pFS->endDocument();
 }
 
 sal_Int32 PowerPointExport::GetAuthorIdAndLastIndex(const OUString& sAuthor, sal_Int32& nLastIndex)
@@ -1178,6 +1187,8 @@ void PowerPointExport::WritePresentationProps()
     pFS->endElementNS(XML_p, XML_showPr);
 
     pFS->endElementNS(XML_p, XML_presentationPr);
+
+    pFS->endDocument();
 }
 
 bool PowerPointExport::WriteComments(sal_uInt32 nPageNum)
@@ -1229,6 +1240,8 @@ bool PowerPointExport::WriteComments(sal_uInt32 nPageNum)
 
             pFS->endElementNS(XML_p, XML_cmLst);
 
+            pFS->endDocument();
+
             return true;
         }
     }
@@ -1454,6 +1467,8 @@ void PowerPointExport::ImplWriteNotes(sal_uInt32 nPageNum)
                 u"../notesMasters/notesMaster1.xml");
 
     SAL_INFO("sd.eppt", "-----------------");
+
+    pFS->endDocument();
 }
 
 void PowerPointExport::AddLayoutIdAndRelation(const FSHelperPtr& pFS, sal_Int32 nLayoutFileId)
@@ -1554,6 +1569,8 @@ void PowerPointExport::ImplWriteSlideMaster(sal_uInt32 nPageNum, Reference< XPro
     pFS->endElementNS(XML_p, XML_sldMaster);
 
     SAL_INFO("sd.eppt", "----------------");
+
+    pFS->endDocument();
 }
 
 sal_Int32 PowerPointExport::GetLayoutFileId(sal_Int32 nOffset, sal_uInt32 nMasterNum)
@@ -1623,6 +1640,8 @@ void PowerPointExport::ImplWritePPTXLayout(sal_Int32 nOffset, sal_uInt32 nMaster
     mnLayoutFileIdMax ++;
 
     xDrawPages->remove(xSlide);
+
+    pFS->endDocument();
 }
 
 void PowerPointExport::WriteShapeTree(const FSHelperPtr& pFS, PageType ePageType, bool bMaster)
@@ -2303,6 +2322,8 @@ void PowerPointExport::WriteTheme(sal_Int32 nThemeNum, svx::Theme* pTheme)
 
     pFS->endElementNS(XML_a, XML_themeElements);
     pFS->endElementNS(XML_a, XML_theme);
+
+    pFS->endDocument();
 }
 
 bool PowerPointExport::ImplCreateDocument()
@@ -2381,6 +2402,8 @@ void PowerPointExport::WriteNotesMaster()
     pFS->endElementNS(XML_p, XML_notesMaster);
 
     SAL_INFO("sd.eppt", "----------------");
+
+    pFS->endDocument();
 }
 
 void PowerPointExport::embedEffectAudio(const FSHelperPtr& pFS, const OUString& sUrl, OUString& sRelId, OUString& sName)

sw/source/filter/ww8/docxexport.cxx

@@ -401,6 +401,7 @@ OString DocxExport::OutputChart( uno::Reference< frame::XModel > const & xModel,
 #else
     (void)xModel;
 #endif
+    pChartFS->endDocument();
     return OUStringToOString( sId, RTL_TEXTENCODING_UTF8 );
 }
 
@@ -497,6 +498,8 @@ std::pair<OString, OString> DocxExport::WriteActiveXObject(const uno::Reference<
                                                               sXMLFileName.subView(sBinaryFileName.indexOf("/") + 1)),
                                        RTL_TEXTENCODING_UTF8);
 
+    pActiveXFS->endDocument();
+
     return std::pair<OString, OString>(sXMLId, sName);
 }
 
@@ -673,6 +676,8 @@ void DocxExport::InitStyles()
 
     // switch the serializer back
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
+
+    pStylesFS->endDocument();
 }
 
 void DocxExport::WriteFootnotesEndnotes()
@@ -702,6 +707,8 @@ void DocxExport::WriteFootnotesEndnotes()
         m_pVMLExport->SetFS(m_pDocumentFS);
         m_pSdrExport->setSerializer( m_pDocumentFS );
         m_pAttrOutput->SetSerializer( m_pDocumentFS );
+
+        pFootnotesFS->endDocument();
     }
 
     if ( !m_pAttrOutput->HasEndnotes() )
@@ -730,6 +737,8 @@ void DocxExport::WriteFootnotesEndnotes()
     m_pVMLExport->SetFS(m_pDocumentFS);
     m_pSdrExport->setSerializer( m_pDocumentFS );
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
+
+    pEndnotesFS->endDocument();
 }
 
 void DocxExport::WritePostitFields()
@@ -750,6 +759,7 @@ void DocxExport::WritePostitFields()
     const auto eHasResolved = m_pAttrOutput->WritePostitFields();
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
     pPostitFS->endElementNS( XML_w, XML_comments );
+    pPostitFS->endDocument();
 
     if (eHasResolved != DocxAttributeOutput::hasResolved::yes)
         return;
@@ -770,6 +780,7 @@ void DocxExport::WritePostitFields()
     m_pAttrOutput->WritePostItFieldsResolved();
     m_pAttrOutput->SetSerializer(m_pDocumentFS);
     pPostitFS->endElementNS(XML_w15, XML_commentsEx);
+    pPostitFS->endDocument();
 }
 
 void DocxExport::WriteNumbering()
@@ -808,6 +819,8 @@ void DocxExport::WriteNumbering()
     // switch the serializer back
     m_pDrawingML->SetFS( m_pDocumentFS );
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
+
+    pNumberingFS->endDocument();
 }
 
 void DocxExport::WriteHeaderFooter( const SwFormat* pFormat, bool bHeader, const char* pType )
@@ -880,6 +893,8 @@ void DocxExport::WriteHeaderFooter( const SwFormat* pFormat, bool bHeader, const
     m_pDocumentFS->singleElementNS( XML_w, nReference,
             FSNS( XML_w, XML_type ), pType,
             FSNS( XML_r, XML_id ), aRelId );
+
+    pFS->endDocument();
 }
 
 void DocxExport::WriteFonts()
@@ -906,6 +921,8 @@ void DocxExport::WriteFonts()
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
 
     pFS->endElementNS( XML_w, XML_fonts );
+
+    pFS->endDocument();
 }
 
 void DocxExport::WriteProperties( )
@@ -1431,6 +1448,8 @@ void DocxExport::WriteSettings()
 
     // finish settings.xml
     pFS->endElementNS( XML_w, XML_settings );
+
+    pFS->endDocument();
 }
 
 void DocxExport::WriteTheme()
@@ -2102,6 +2121,7 @@ DocxExport::DocxExport(DocxExportFilter& rFilter, SwDoc& rDocument,
 
 DocxExport::~DocxExport()
 {
+    m_pDocumentFS->endDocument();
 }
 
 DocxSettingsData::DocxSettingsData()