mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-12 21:29:43 +02:00
26 lines
540 B
ObjectPascal
26 lines
540 B
ObjectPascal
program a;
|
|
{$mode delphi}
|
|
uses
|
|
SysUtils, Classes;
|
|
const
|
|
LockFile = 'lock.txt';
|
|
var
|
|
H : TStream;
|
|
begin
|
|
try
|
|
H := TFileStream.Create(lockFile, fmCreate);
|
|
h.Write(H, 4);
|
|
{ should fail with an exception due to exclusion }
|
|
H := TFileStream.Create(lockFile, fmCreate);
|
|
Halt(1);
|
|
except
|
|
{ check the size of the file, to ensure that the second
|
|
create didn't overwrite the file }
|
|
H.free;
|
|
H := TFileStream.create(LockFile, fmOpenRead or fmShareDenyNone);
|
|
if H.Size<>4 then
|
|
halt(2);
|
|
end
|
|
end.
|
|
|