Messages in this thread | | | Date | Thu, 10 Jul 2003 18:18:59 +0200 | From | Andrea Arcangeli <> | Subject | Re: [PATCH] Fix do_div() for all architectures |
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On Thu, Jul 10, 2003 at 08:40:19AM -0700, Richard Henderson wrote: > On Tue, Jul 08, 2003 at 08:27:26PM +0200, Bernardo Innocenti wrote: > > +extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor) > > __attribute_pure__; > ... > > + __rem = __div64_32(&(n), __base); \ > > The pure declaration is very incorrect. You're writing to N.
now pure sounds more reasonable, I wondered how could gcc keep track of the stuff pointed by the parameters (especially if this stuff points to other stuff etc.. ;). So only the pointer passed as parameter can change, not the memory pointed by the pointer as in this case.
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