[perl #129757] for loop doesn't update correct variable

On Wed Sep 28 21:01:34 2016, aristotle wrote:
> * Mark-Jason Dominus <perlbug-followup@perl.org> [2016-09-29 03:00]:
> > Also, when correcting that bug, please make sure this is also
> > corrected:
> >
> > for my $i (1..3) {
> >   sub announce { printf "Count %d\n", $i }
> >   announce();
> > }
> >
> > It shows the same wrong behavior.
> 
> That sub is compiled just once despite its placement inside the loop
> and
> it binds $i at compile time.

This is similar to the problem that plagues lexical aliasing.  The notes I added in 514e62e37b8 may also be relevant to package subs, but I do not have time to think it through now, or in the foreseeable future.

-- 

Father Chrysostomos


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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=129757

• [perl #129757] for loop doesn't update correct variable by James E Keenan via RT
• Re: [perl #129757] for loop doesn't update correct variable by Eirik Berg Hanssen
• Re: [perl #129757] for loop doesn't update correct variable by Ricardo Signes
• [perl #129757] for loop doesn't update correct variable by Andy Lester via RT
• [perl #129757] for loop doesn't update correct variable by Mark-Jason Dominus
• Re: [perl #129757] for loop doesn't update correct variable by Aristotle Pagaltzis
• [perl #129757] for loop doesn't update correct variable by Father Chrysostomos via RT