Dean Moldovan 08cbe8dfed Make all classes with the same instance size derive from a common base ... In order to fully satisfy Python's inheritance type layout requirements, all types should have a common 'solid' base. A solid base is one which has the same instance size as the derived type (not counting the space required for the optional `dict_ptr` and `weakrefs_ptr`). Thus, `object` does not qualify as a solid base for pybind11 types and this can lead to issues with multiple inheritance. To get around this, new base types are created: one per unique instance size. There is going to be very few of these bases. They ensure Python's MRO checks will pass when multiple bases are involved.		2017-02-23 15:45:26 +01:00
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pybind11	Make all classes with the same instance size derive from a common base	2017-02-23 15:45:26 +01:00