Comment (by Erik Schnetter):

I was afraid so. The bboxset2 implementation is among the most complex pieces of CarpetLib. It also was written at a time when C++11 support was immature. The first step might be to clean up the code by removing support for non-C++11 compilers.

Apart from this, the code is peppered by assert statements, and it used shared pointers (instead of more efficient unique pointers) to be more sure that it is correct. I wonder why the assert statements don’t trigger.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2426/g-10-possibly-miscompiles-parts-of-carpet