[fpc-devel] Packed record integers and x86_86
christo.crause at gmail.com
Wed Mar 27 18:48:02 CET 2019
On Wed, 27 Mar 2019, 19:27 DJ Coertzen, <patrolliekaptein at gmail.com> wrote:
> Hi there,
> I need a solution for a packed record containing 4-byte 32-bit integers
> and cardinals, and other byte 8 bit and word 16 bit sized variables to
> overlay over a stream.
> * TMyBinaryHeader = packed record*
> * Sender : Cardinal;*
> * Target : Cardinal;*
> * Reference : Integer; *
> * Flags : Word;*
> * CheckByte : Byte;*
> * end;*
> So on 32 bit systems, SizeOf(TMyBinaryHeader) will report 15 bytes. How do
> I accomplish this on 64 bit platform and avoiding "myprotocollib.pas(x,y)
> Error: Typecast has different size (4 -> 8) in assignment" without having
> to port to ugly byte copy operations.
Perhaps use size explicit types such as uint32 and int32?
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