Front page | perl.perl5.porters |
Postings from July 2022
Dear Jim,
James E Keenan <jkeenan@pobox.com> writes:
> On 7/22/22 09:23, Konovalov, Vadim via perl5-porters wrote:
>> My scripts suddenly stopped working in newer perl because they use $00
>> variable.
>> $ perl -we '$00'
>> Numeric variables with more than one digit may not start with '0' at
>> -e line 1.
[…]
>> This works well in 5.26.0
>
> It worked "well" prior to 5.32 only if your definition of "working well"
> includes ignoring warnings.
>
> #####
> $ perlbrew use perl-5.30.0
> $ perl -we '$00'
> Useless use of a variable in void context at -e line 1.
> #####
That warning has nothing to do with the issue at hand, that applies to
_any_ variable used in void context, even lexicals.
$ perl -we 'my $foo; $foo'
Useless use of a variable in void context at -e line 1.
It only shows up here because Vadim gave a minimal example demonstrating
the new syntax error in 5.32. Artificially complicating the example
suppresses the warning, e.g.:
$ perlbrew use 5.30.0
$ perl -wE '$00 = $^V; say $00'
v5.30.0
$ perlbrew use 5.32.0
$ perl -wE '$00 = $^V; say $00'
Numeric variables with more than one digit may not start with '0'
at -e line 1.
Can you please make an effort to actually understand the meaning of the
examples in bug reports, and the output you get when running them?
- ilmari
Thread Previous
|
Thread Next