Commit Graph

3 Commits

Author SHA1 Message Date
Stefan Tröger
22fa3b3922 Extension: Fix order-of-initialisation crash
FreeCADs property system utilises some pointer math to calculate the offset between
property and base class. Due to virtual inheritance of th ePropertyContainer the memory
layout has been changed to rather random, which has lead to crashes dependend on the
order of object initialisation.

The solution is to not make PropertyContaner virtual but a class below, Base::Persitance.
Then the memory layout is random for Persistance, but it is perfectly aligned for the
base class chains from PropertyContainer onwards as well as from Extension onwards.
Hence the proeprty system was changed to take the offset always from those two.
2016-10-08 12:48:34 +02:00
Stefan Tröger
7bcb6519cc Extensions: Make Python Integration work 2016-10-08 12:48:34 +02:00
Stefan Tröger
c47c34edff Extensions: bring files in correct order 2016-10-08 12:48:34 +02:00