[perl #134230] Numifying a 0x string evaluates the hex number

On Thu, 27 Jun 2019 22:34:32 -0700, ikegami@adaelis.com wrote:
> Changing this means changing Scalar::Util::looks_like_number. Would that
> break things?

I agree that looks_like_number()also needs to be thought about.

Perl's current behaviour is to issue the "isn't numeric" warning when "0xff"+0 is evaluated.
However, I doubt that such a warning is valid now that "0xff" is numified to 255.
It was certainly a valid warning when "0xff" numified to 0 ... but I'm thinking that warning should not be emitted for the current behaviour, and nor should looks_like_number("0xff") return FALSE.

Cheers,
Rob


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via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=134230

• [perl #134230] Numifying a 0x string evaluates the hex number by Dan Book
• Re: [perl #134230] Numifying a 0x string evaluates the hex number by Eric Brine
• [perl #134230] Numifying a 0x string evaluates the hex number by sisyphus@cpan.org via RT
• Re: [perl #134230] Numifying a 0x string evaluates the hex number by H.Merijn Brand
• Re: [perl #134230] Numifying a 0x string evaluates the hex number by sisyphus
• [perl #134230] Numifying a 0x string evaluates the hex number by sisyphus@cpan.org via RT