tdf#130214: workaround invalid state resulting from error on import

Obviously the real error is somewhere else, which results in tdf#126435,
and produces unexpected state with missing text append context on stack.
This is just a hack to avoid crash.

Change-Id: I420ac3b74f5efb9688dc764ac2ad0dcc974ba0e1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87595
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Mike Kaganski <mike.kaganski@collabora.com>
(cherry picked from commit eca00082c78fddf79f247057227404738be8806c)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/87634
Tested-by: Jenkins
Reviewed-by: Xisco Faulí <xiscofauli@libreoffice.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/writerfilter/source/dmapper/DomainMapper_Impl.cxx b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
index 4206b41ddaed..8128c800e834 100644
--- a/writerfilter/source/dmapper/DomainMapper_Impl.cxx
+++ b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
@@ -4426,6 +4426,12 @@ void DomainMapper_Impl::handleBibliography
     (const FieldContextPtr& pContext,
     const OUString & sTOCServiceName)
 {
+    if (m_aTextAppendStack.empty())
+    {
+        // tdf#130214: a workaround to avoid crash on import errors
+        SAL_WARN("writerfilter.dmapper", "no text append stack");
+        return;
+    }
     // Create section before setting m_bStartTOC and m_bStartBibliography: finishing paragraph
     // inside StartIndexSectionChecked could do the wrong thing otherwise
     const auto xTOC = StartIndexSectionChecked(sTOCServiceName);