Is stable "isa" actually stable in 5.32?

[JRaspass]

Congrats on shipping stable 🎉

I wanted to try it out at $work with Perl 5.32 from Debian stable, this meant the only available stable feature I could use was isa.

However I quickly ran into issues like:

Can't locate object method "isa" via package XXX

I believe this is the exact same issue raised in https://www.effectiveperlprogramming.com/2020/01/use-the-infix-class-instance-operator/

And fixed in Perl/perl5@a85f515.

As such I think isa's Perl version ought to be raised to 5.34.

[Leont]

Sounds reasonable to me. @rjbs @leonerd what do you think?

[haarg]

Aren't there other significant bugs with isa even in 5.36?

[leonerd]

It had a bugfix between 5.32 and 5.34, yes. That fixed a fairly big observable bug in its behaviour. Is it an intended change? Probably not. Does it mean the thing wasn't "stable" at 5.32? I can't say.

You probably don't want to be using isa before 5.34, that's true. But are we going to retroactively declare various other bugs in features that you shouldn't use before later perl versions fixed them? I don't think we're likely to do that.

[leonerd]

@haarg

Aren't there other significant bugs with isa even in 5.36?

If there are, I don't think I'm aware of any.

[haarg]

Perl/perl5#20354

[leonerd]

@haarg Oooh I see. Still present in 5.36 but fixed in blead, so it'll be fine in 5.38.

[tonycoz]

The fix for Perl/perl5#20354 was included in 5.36.1