On Thu, 8 Oct 2020 10:47:52 +0200 (CEST), Michael Van Canneyt via fpc-pascal <fpc-pascal@lists.freepascal.org> wrote:
> > >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. > OK, is it possible to define the TMyRecord with default values so that when I do Default(TMyRecord) it will be non-zero defaults written instead of zeros? -- Bo Berglund Developer in Sweden _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
