tdf#114596 dbaccess: fix mysterious dataloss bug

OBookmarkContainer actually re-uses the reference count of
ODatabaseSource, so converting ODatabaseSource::m_aBookmark to Reference
created a cycle, which somehow causes the dataloss, because evidently
something as important as storing the data must be done in the
destructor.

(regression from 2660d24a07866e083c5135ea263030f3e3a2e729)

(cherry picked from commit 96ae2a3300811897c24cccb20f8c2faf382483df)

tdf#114596 compilerplugins: add exception to [loplugin:refcounting]
(cherry picked from commit e80da60895b45309fa1d018760d5f11cca4367f4)

Change-Id: I4cad01dc9cdaf405c1eb31d6c0e161eb6712b78f
Reviewed-on: https://gerrit.libreoffice.org/49026
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Michael Stahl <mstahl@redhat.com>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

3 files changed, 9 insertions, 3 deletions

diff --git a/compilerplugins/clang/refcounting.cxx b/compilerplugins/clang/refcounting.cxx
index e008a9e501dd..5a4a40a37d3c 100644
--- a/compilerplugins/clang/refcounting.cxx
+++ b/compilerplugins/clang/refcounting.cxx
@@ -146,6 +146,10 @@ bool containsXInterfaceSubclass(const Type* pType0) {
         if (isDerivedFrom(pRecordDecl, "XPropertyList")) { // module svx
             return false;
         }
+        // tdf#114596
+        if (isDerivedFrom(pRecordDecl, "dbaccess::OBookmarkContainer")) { // module dbaccess
+            return false;
+        }
     }
     if (pRecordDecl) {
         const ClassTemplateSpecializationDecl* pTemplate = dyn_cast<ClassTemplateSpecializationDecl>(pRecordDecl);
diff --git a/dbaccess/source/core/dataaccess/datasource.cxx b/dbaccess/source/core/dataaccess/datasource.cxx
index c56f67b90f18..cf6ab3c45a55 100644
--- a/dbaccess/source/core/dataaccess/datasource.cxx
+++ b/dbaccess/source/core/dataaccess/datasource.cxx
@@ -472,7 +472,7 @@ ODatabaseSource::ODatabaseSource(const ::rtl::Reference<ODatabaseModelImpl>& _pI
             :ModelDependentComponent( _pImpl )
             ,ODatabaseSource_Base( getMutex() )
             ,OPropertySetHelper( ODatabaseSource_Base::rBHelper )
-            ,m_xBookmarks( new OBookmarkContainer( *this, getMutex() ) )
+            , m_Bookmarks(*this, getMutex())
             ,m_aFlushListeners( getMutex() )
 {
     // some kind of default
@@ -1162,7 +1162,8 @@ Reference< XConnection > ODatabaseSource::getConnection(const OUString& user, co
 Reference< XNameAccess > SAL_CALL ODatabaseSource::getBookmarks(  )
 {
     ModelMethodGuard aGuard( *this );
-    return static_cast< XNameContainer* >(m_xBookmarks.get());
+    // tdf#114596 this may look nutty but see OBookmarkContainer::aquire()
+    return static_cast<XNameContainer*>(&m_Bookmarks);
 }
 
 Reference< XNameAccess > SAL_CALL ODatabaseSource::getQueryDefinitions( )
diff --git a/dbaccess/source/core/dataaccess/datasource.hxx b/dbaccess/source/core/dataaccess/datasource.hxx
index b508c599b2b3..7c6e18b8b90f 100644
--- a/dbaccess/source/core/dataaccess/datasource.hxx
+++ b/dbaccess/source/core/dataaccess/datasource.hxx
@@ -82,7 +82,8 @@ class ODatabaseSource   :public ModelDependentComponent // must be first
 
 private:
     using ODatabaseSource_Base::rBHelper;
-    rtl::Reference<OBookmarkContainer> m_xBookmarks;
+    // note: this thing uses the ref-count of "this", see OBookmarkContainer::acquire!
+    OBookmarkContainer m_Bookmarks;
     ::comphelper::OInterfaceContainerHelper2       m_aFlushListeners;
 
 private: