But shouldn't there be a warning in 5.12?

Perhaps this is a new warning for old problem added in 5.14 to help us.

I don't get a warning from this in 5.14.0: ...

No. There is no closure involved there.

Try:

use warnings;
use strict;

my $x = <>;
my $y = "X"   if $x =~ /X/;
sub x{ 
    print $y ? 'Okay' : 'bad';
}

print "$y\n";

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Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: Closure warning with Perl 5.14? by BrowserUk
in thread Closure warning with Perl 5.14? by BerntB

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