[fpc-pascal] private type and type compatibility

Michael Van Canneyt michael at freepascal.org
Wed Oct 30 12:20:31 CET 2013

On Wed, 30 Oct 2013, Sven Barth wrote:

> Am 30.10.2013 11:59, schrieb Jonas Maebe:
>> problem to use it. It's of course not exactly the same (tdynarray isn't 
>> declared as private to u1), but at the scope visibility level it is the 
>> same situation as far as I am concerned.
> Hmm... but here the compiler can not know whether the unit using u2 has unit 
> u1 in scope or not. In case of private and protected types the compiler can 
> know however that code declared externally can never have access to it

My thoughts exactly.

In the case of units, the user CAN make it visible (as in : directly accessible)
by adding the unit to the uses clause. He can never do this for the private type.


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