Re: [fpc-pascal] Are record fields zeroed on declaration of a record?

[Michael Van Canneyt via fpc-pascal]

On Thu, 8 Oct 2020, Bo Berglund via fpc-pascal wrote:

I would like to know if data containers of type packed record are
zeroed when the item is declared?

type
 TMyRecord = packed record
   AField1: byte;
   AField2: word;
   AField3: single;
   AField4: boolean;
   AField5: array[0..15] of Cardinal;
 end;

procedure SomeProc;
var
 myRec: TMyRecord;
begin
...

Will random data fill myRec until I assign each field or will the
entire record be zeroed at this point?

No, as with all local unmanaged variables it contains random data. 
The best you can do is add this as the first line:

begin
  MyRec:=Default(TMyRecord);

It will in effect zero out the record.

Michael.
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