Source: gudhi
Version: 2.3.0+dfsg-2
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)

Dear Maintainer,

gudhi currently fails to build from source in a clean sid chroot with
the following error:

In file included from /usr/include/eigen3/Eigen/SparseCore:50,
                 from /usr/include/eigen3/Eigen/Sparse:26,
                 from /usr/include/eigen3/Eigen/Eigen:2,
                 from 
/build/gudhi-2.3.0+dfsg/include/gudhi/Tangential_complex/utilities.h:33,
                 from 
/build/gudhi-2.3.0+dfsg/include/gudhi/Tangential_complex/Simplicial_complex.h:27,
                 from 
/build/gudhi-2.3.0+dfsg/include/gudhi/Tangential_complex.h:27,
                 from 
/build/gudhi-2.3.0+dfsg/example/Tangential_complex/example_with_perturb.cpp:1:
/usr/include/eigen3/Eigen/src/SparseCore/SparseBlock.h: In member function 
'Eigen::internal::sparse_matrix_block_impl<SparseMatrixType, BlockRows, 
BlockCols>::BlockType& 
Eigen::internal::sparse_matrix_block_impl<SparseMatrixType, BlockRows, 
BlockCols>::operator=(const BlockType&)':
/usr/include/eigen3/Eigen/src/SparseCore/SparseBlock.h:216:33: error: expected 
primary-expression before '>' token
       return operator=<BlockType>(other);
                                 ^
This was reproduced in Ubuntu as well: 
https://launchpad.net/ubuntu/+source/gudhi/2.3.0+dfsg-2

Can you please look into this build failure?

Thanks,
Logan

-- System Information:
Debian Release: buster/sid
  APT prefers cosmic-updates
  APT policy: (500, 'cosmic-updates'), (500, 'cosmic-security'), (500, 
'cosmic'), (400, 'cosmic-proposed'), (100, 'cosmic-backports')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-11-generic (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
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Init: systemd (via /run/systemd/system)
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