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-rw-r--r--sc/source/core/data/table1.cxx4
1 files changed, 4 insertions, 0 deletions
diff --git a/sc/source/core/data/table1.cxx b/sc/source/core/data/table1.cxx
index be7d12b50150..b899bbb91cbf 100644
--- a/sc/source/core/data/table1.cxx
+++ b/sc/source/core/data/table1.cxx
@@ -2554,6 +2554,10 @@ ScColumnsRange ScTable::GetColumnsRange(SCCOL nColBegin, SCCOL nColEnd) const
// out-of-line the cold part of the CreateColumnIfNotExists function
void ScTable::CreateColumnIfNotExistsImpl( const SCCOL nScCol ) const
{
+ // When doing multi-threaded load of, e.g. XLS files, we can hit this, which calls
+ // into SfxItemPool::Put, in parallel with other code that calls into SfxItemPool::Put,
+ // which is bad since that code is not thread-safe.
+ SolarMutexGuard aGuard;
const SCCOL aOldColSize = aCol.size();
aCol.resize( static_cast< size_t >( nScCol + 1 ) );
for (SCCOL i = aOldColSize; i <= nScCol; i++)