Bug#835344: document that my ... if will still do the my, despite the if

[Niko Tyni]

On Wed, Aug 24, 2016 at 07:42:18PM +0800, 積丹尼 Dan Jacobson wrote:
> Package: perl-doc
> Version: 5.22.2-3
> Severity: wishlist
> 
> Document that
> my $a = $b if $c will still declare $a no matter if $c is true or false.

The current behaviour is intentionally undocumented. From perlsyn.pod:

    NOTE: The behaviour of a "my", "state", or "our" modified with
    a statement modifier conditional or loop construct (for example,
    "my $x if ...") is undefined. The value of the "my" variable may
    be "undef", any previously assigned value, or possibly anything
    else. Don't rely on it. Future versions of perl might do something
    different from the version of perl you try it out on. Here be dragons.

See also the dependencies of the tracking bug
 https://rt.perl.org/Public/Bug/Display.html?id=89652

This seems particularly topical:
 https://rt.perl.org/Public/Bug/Display.html?id=116110#txn-1180016

-- 
Niko Tyni   ntyni at debian.org