Question and Answer Database
FAQ2410D.txt Temporarily turning off range checking.
Category :Windows API
Platform :All
Product :All 32 bit
Question:
How do I temporarily turn off range checking for a block of code,
then turn it back on if it was originally enabled ?
Answer:
You can do this in code by using "IFOPT" and "DEFINE".
type
PSomeArray = ^TSomeArray;
TSomeArray = array[0..0] of integer;
procedure TForm1.Button1Click(Sender: TObject);
var
p : PSomeArray;
i : integer;
begin
{$IFOPT R+}
{$DEFINE CKRANGE}
{$R-}
{$ENDIF}
GetMem(p, sizeof(integer) * 200);
try
for i := 1 to 200 do
p[i] := i;
finally
FreeMem(p, sizeof(integer) * 200);
end;
{$IFDEF CKRANGE}
{$UNDEF CKRANGE}
{$R+}
{$ENDIF}
end;
7/16/98 4:31:28 PM
Last Modified: 01-SEP-99