diff options
| -rw-r--r-- | sc/source/core/data/column.cxx | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sc/source/core/data/column.cxx b/sc/source/core/data/column.cxx index bfd11e038bf0..0c151a70ac65 100644 --- a/sc/source/core/data/column.cxx +++ b/sc/source/core/data/column.cxx @@ -1633,6 +1633,15 @@ public: sc::formula_block::const_iterator itEnd = it; std::advance(itEnd, nDataSize); + if(nDataSize > 1024 && (mnCopyFlags & InsertDeleteFlags::FORMULA) != InsertDeleteFlags::NONE) + { + // If the column to be replaced contains a long formula group (tdf#102364), there can + // be so many listeners in a single vector that the quadratic cost of repeatedly removing + // the first element becomes very high. Optimize this by removing them in one go. + sc::EndListeningContext context(*mrDestCol.GetDoc()); + mrDestCol.EndListeningFormulaCells( context, nRow, nRow + nDataSize - 1, nullptr, nullptr ); + } + for (; it != itEnd; ++it, ++nRow) cloneFormulaCell(nRow, **it); } |