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Re: Time for a 64-bit perl API?

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Nicholas Clark
June 20, 2012 04:22
Re: Time for a 64-bit perl API?
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On Sat, Jun 16, 2012 at 05:29:26PM +0200, Leon Timmermans wrote:
> On Sun, Jun 10, 2012 at 7:59 PM, Father Chrysostomos <> wrote:
> > I thought increasing the size of an argument was not considered an
> > incompatible change.  We have already done that with some functions.
> I'd agree. The only place where widening them up can really break is
> function pointers, and I doubt anyone is doing that (if only because
> of the pTHX mess they'd have to do).

Widening the types of pointers breaks things.
(That's probably not quite phrased correctly)

Jarkko spent quite a lot of time a decade ago fixing bugs that DEC Alphas
exposed, where the internals were taking a pointer to (IIRC) a STRLEN
variable and passing it to a function expecting a pointer to (IIRC) a U32
or suchlike. Until then, on most platforms people had ever actively developed
perl on, U32 and STRLEN had the same size.

Nicholas Clark

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