Fixed segfault in ClassDerived.tp_dealloc #1330
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Because tp_clear sets tpHandle to NULL, it can't be used. Fortunately, we can simply read object's type from pyHandle.
filmor
approved these changes
Dec 18, 2020
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What caused the problem + fixes
All reflected .NET types stored
GCHandlepointing to their implementations past the last byte ofPyTypeObject. By addingIntPtr.Sizeto the size ofPyTypeObjectfor CLR metatype we ensure, that the necessary space is allocated without relying on Python never writing immediately aftertypeinstances.In
ClassDerivedObjecttp_dealloctried to usetpHandlewhich was previously NULLed intp_clear. Fortunately,tpHandleinClassDerivedObjectis merely a duplicate ofPyObject_TYPE(pyHandle), so could be read from there.Does this close any currently open issues?
#1327