aquenos / chimeratk-controlsystemadapter-epics Goto Github PK

I just created a tag of the ChimeraTK EPICS IOC adapter which uses commit 96256ab of the device support adapter.
Can you please tag this version so the tag of the IOC adapter is referring to a tag of this project?

@mhier reported a bug in ControlSystemAdapterSharedPVSupport::read:

When the underlying ProcessArray supports AccessMode::wait_for_new_data, the lastValue (and lastVersionNumber) are used. This is problematic, because lastValue might not have been initialized yet and might thus be null.

This will lead to a null-pointer dereference if the calling code expects the returned tuple to always contain a non-null value (and accoding the the original report, the EPICS IOC does indeed crash).

For a ProcessArray that does not support AccessMode::wait_for_new_data, this might also happen if readLatest returns false, though I am not entirely sure yet whether this can ever happen.