Message118127
| Author |
pitrou |
| Recipients |
amaury.forgeotdarc, eric.smith, mark.dickinson, pitrou, rhettinger, stutzbach |
| Date |
2010年10月07日.19:30:53 |
| SpamBayes Score |
0.0024742056 |
| Marked as misclassified |
No |
| Message-id |
<1286479851.3143.1.camel@localhost.localdomain> |
| In-reply-to |
<1286468840.71.0.333993292413.issue10044@psf.upfronthosting.co.za> |
| Content |
> Technically arbitrary relational comparisons of pointers are
> undefined, but in practice Antoine's assumptions here are very modest.
> They boil down to:
>
> v >= &array[0] && v < &array[array_len]
I can't say anything about the standard, but p > q looks like it should
be the same as (p - q) > 0, which looks rather well-defined for
pointers.
(at worse we could cast to _Py_uintptr_t, hopefully the compiler
wouldn't produce any different code) |
|