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{ %OPT=-O3 }
{$mode objfpc}
// Compiled with option -O3 for Win32-I386
type
PWordArray = ^TWordArray;
TWordArray = array [0..1023]of LongWord;
TMyclass = class
LoByte,HiByte:Byte
end;
var
Buffer:TWordArray;
OldMousePos:LongInt = 0;
ScreenBuffer:Pointer = @Buffer;
procedure Show(ScreenBuffer:Pointer);
begin
TMyClass(PWordArray(ScreenBuffer)^[OldMousePos]).HiByte:=(not
TMyClass(PWordArray(ScreenBuffer)^[OldMousePos]).HiByte)and $7F
// he forgets to write the result into the array
end;
begin
TMyClass(Buffer[0]):=TMyClass.Create;
Show(ScreenBuffer);
if TMyClass(Buffer[0]).HiByte<>$7F then
halt(1);
writeln('ok');
end.
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