Good progress thanks to #13864 . After solving the ZODB issue I'm now
running into the following (this is just one example, the same issue
arises in many cases):
sage: sage.homology.chain_complex.HomologyGroup(100)
ERROR (at getWritePointer in /usr/local/sage/5.6b1/local/include/
linbox/matrix/permutation-matrix.h:175):
Precondition not met:P_.size()
terminate called after throwing an instance of
'LinBox::PreconditionFailed'
(SIGABRT)
The code referred to is:
173 _UnsignedInt* getWritePointer()
174 {
175 linbox_check(P_.size());
176 return &P_[0];
177 }
Can someone confirm this is an issue with "SAGE_DEBUG=yes" or is this
a peculiarity of my setup?
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