On 18/04/2021 03:34, Ryan Joseph via fpc-pascal wrote:

On Apr 17, 2021, at 3:09 PM, Sven Barth <pascaldra...@googlemail.com> wrote:

The compiler will generate a warning in case you instantiate a class that is 
abstract or has abstract methods. You can escalate these warnings to errors if 
you need:
It's probably not practical to put that warning into all potential files but a 
warning is still probably good enough as a reminder. It's curious though why 
it's not an error by default, because if the class is abstract and you 
instantiate it and try to use it things are going to fail anyways so why does 
the compiler allow it in the first place?

Regards,
        Ryan Joseph

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My own code will have cases where I have only implemented some of the abstract methods for some classes, in principle because the code is incomplete, but there are also case where it never makes sense to implement them and calling them indicates a logical error elsewhere in the code.

Colin

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