Re: Yet Another Unitialized Value Question

[Zaxo]

You have a logic error.

To get to line 435, the object of unless must be true, i.e. ($lock, $updon) != (). $lock is therefore redefined everywhere between the unless block and the DONE: label. It may well be undef, if the database column contains nulls.

Update, corrected some confusion of mine.

After Compline,
Zaxo

[doorslam]

The column is a boolean flag with a not null constraint. I assume if fetchrow returns no rows, lock is undefined, but then I don't reference it again.

If there is a row, then lock must be 0 or 1.

[sandfly]

Are you sure you have the right line?

undef $lock;
if ($lock) ...

does not cause a warning for me (perl 5.8.0). It's not doing a numerical == comparison.

Have you tried using the debugger?