dealii::BlockSparseMatrix<double> systemMatrix;
auto systemMatrixIteratorEnd = systemMatrix.end(0);
auto systemMatrixIteratorBegin = systemMatrix.begin(0);
if (systemMatrixIteratorBegin != systemMatrixIteratorEnd)
std::cout<<"Example"<<std::endl;
Using deal.ii 9.4.0, this results in the compilation error
include/deal.II/lac/matrix_iterator.h:184:20: error: ‘bool
dealii::BlockMatrixIterators::Accessor<BlockMatrixType,
false>::operator==(const
dealii::BlockMatrixIterators::Accessor<BlockMatrixType, false>&) const
[with BlockMatrixType =
dealii::BlockMatrixBase<dealii::SparseMatrix<double> >]’ is protected
within this context
184 | return (accessor == other.accessor);
include/deal.II/lac/block_matrix_base.h:1475:3: note: declared protected
here
1475 | Accessor<BlockMatrixType, false>::operator==(const Accessor
&a) const
Everything works if BlockSparseMatrix is replaced by SparseMatrix.
Is there anything I miss here?
No, it's just an (interesting) bug. I have the fix here:
https://github.com/dealii/dealii/pull/16225
Thanks for pointing it out and providing a good testcase!
Best
W.
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