[fpc-pascal] Variable Initialization Questions

[Jonas Maebe]

Mazola Winstrol wrote:
> 1 - Does the compiler automatically initialize all class fields when a
> new instance is created?

They're called instance fields, and yes, they are zeroed. Class fields 
are fields that that are unique per class type, rather than per instance.

> 2 - Does the compiler initialize record fields?

Only for fields that are managed types.

> 3 - When i declare a pointer as a global variable or as a member of a
> record, can i assume that its initial value is nil?

No.

> 4 - Is there any compiler switch regarding initialization of variables?

There is only -gt, but it "initialises" (non-managed) variables and 
out-parameter with random data in order to more easily find cases of 
uninitialised data. It cannot be used to initialise all variables to a 
known value.


Jonas