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{ %OPT=-O3 }
// Compiled with option -O3 for Win32-I386
type
PWordArray = ^TWordArray;
TWordArray = array [0..1023]of Word;
WordRec = packed record
LoByte,HiByte:Byte
end;
var
Buffer:TWordArray;
OldMousePos:LongInt = 0;
ScreenBuffer:Pointer = @Buffer;
procedure Show(ScreenBuffer:Pointer);
begin
WordRec(PWordArray(ScreenBuffer)^[OldMousePos]).HiByte:=(not
WordRec(PWordArray(ScreenBuffer)^[OldMousePos]).HiByte)and $7F
// he forgets to write the result into the array
end;
begin
Buffer[0]:=$0000;
Show(ScreenBuffer);
if Buffer[0]<>$7F00 then
halt(1);
writeln('ok');
end.
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