ofz#41460 ubsan Bad-cast

Change-Id: I0352bce1c699bfa6b7fdd5c3f04e46cc7599ce91
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126019
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

2 files changed, 10 insertions, 6 deletions

diff --git a/sw/source/filter/ww8/ww8par.cxx b/sw/source/filter/ww8/ww8par.cxx
index ef98c84354a9..cf5f4fe2cb6e 100644
--- a/sw/source/filter/ww8/ww8par.cxx
+++ b/sw/source/filter/ww8/ww8par.cxx
@@ -4712,15 +4712,15 @@ void wwExtraneousParas::insert(SwTextNode *pTextNode)
     pTextNode->Add(const_cast<TextNodeListener*>(&rListener));
 }
 
-void wwExtraneousParas::remove_if_present(SwTextNode *pTextNode)
+void wwExtraneousParas::remove_if_present(SwModify* pModify)
 {
     auto it = std::find_if(m_aTextNodes.begin(), m_aTextNodes.end(),
-        [pTextNode](const wwExtraneousParas::TextNodeListener& rEntry) { return rEntry.m_pTextNode == pTextNode; });
+        [pModify](const wwExtraneousParas::TextNodeListener& rEntry) { return rEntry.m_pTextNode == pModify; });
     if (it == m_aTextNodes.end())
         return;
     SAL_WARN("sw.ww8", "It is unexpected to drop a para scheduled for removal");
     const TextNodeListener& rListener = *it;
-    pTextNode->Remove(const_cast<TextNodeListener*>(&rListener));
+    pModify->Remove(const_cast<TextNodeListener*>(&rListener));
     m_aTextNodes.erase(it);
 }
 
@@ -4734,8 +4734,7 @@ void wwExtraneousParas::TextNodeListener::SwClientNotify(const SwModify& rModify
     // indicates an underlying bug.
     if (pLegacy->GetWhich() == RES_OBJECTDYING)
     {
-        const SwTextNode& rNode(static_cast<SwTextNode const&>(rModify));
-        m_pOwner->remove_if_present(const_cast<SwTextNode*>(&rNode));
+        m_pOwner->remove_if_present(const_cast<SwModify*>(&rModify));
     }
 }
 
diff --git a/sw/source/filter/ww8/ww8par.hxx b/sw/source/filter/ww8/ww8par.hxx
index 4126763a5512..c646d256c038 100644
--- a/sw/source/filter/ww8/ww8par.hxx
+++ b/sw/source/filter/ww8/ww8par.hxx
@@ -934,13 +934,18 @@ private:
     std::set<TextNodeListener> m_aTextNodes;
     SwDoc& m_rDoc;
 
+    void remove_if_present(SwModify* pModify);
+
     wwExtraneousParas(wwExtraneousParas const&) = delete;
     wwExtraneousParas& operator=(wwExtraneousParas const&) = delete;
 public:
     explicit wwExtraneousParas(SwDoc &rDoc) : m_rDoc(rDoc) {}
     ~wwExtraneousParas() { delete_all_from_doc(); }
     void insert(SwTextNode *pTextNode);
-    void remove_if_present(SwTextNode *pTextNode);
+    void remove_if_present(SwTextNode *pTextNode)
+    {
+        remove_if_present(static_cast<SwModify*>(pTextNode));
+    }
     void delete_all_from_doc();
 };