Hi,
I just discovered a surprising bug in my application. I had a variable
"b" defined which I used in a FOR loop. FPC forbids you to modify that
loop variable inside the for loop - which is understandable.
However, the loop called a local procedure, and that local procedure
modified the loop variable. FPC never complained about it. Is this a FPC
bug?
Here is a test program to show the issue.
=========================
program test;
{$mode objfpc}{$H+}
uses
SysUtils, classes;
type
TMyTest = class(TObject)
public
procedure Run;
end;
procedure TMyTest.Run;
var
b: integer;
procedure ModifyB;
begin
b := 5; // FPC never complains - BUG?
end;
begin
for b := 1 to 10 do
begin
writeln(b);
// b := 5; // FPC will give a compiler error. CORRECT.
ModifyB;
end;
end;
var
t: TMyTest;
begin
t := TMyTest.Create;
t.Run;
t.Free;
end.
=========================
Regards,
Graeme
--
fpGUI Toolkit - a cross-platform GUI toolkit using Free Pascal
http://fpgui.sourceforge.net/
My public PGP key: http://tinyurl.com/graeme-pgp
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