Fix SparseVector::insert(Index) assigning int to Scalar (!2046) · Merge requests · libeigen / eigen

Scalar doesn't necessarily support implicit construction from int or assignment from int.

Here's the error message I got without this fix:

/home/tav/git/Sleipnir/build/_deps/eigen3-src/Eigen/src/SparseCore/SparseVector.h:180:25: error: no match for ‘operator=’ (operand types are ‘Eigen::internal::CompressedStorage<ExplicitDouble, int>::Scalar’ {aka ‘ExplicitDouble’} and ‘int’)
  180 |     m_data.value(p + 1) = 0;
      |     ~~~~~~~~~~~~~~~~~~~~^~~

Fix SparseVector::insert(Index) assigning int to Scalar

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