Messages in this thread | | | Date | Sat, 24 Nov 2007 18:28:22 +0000 | From | Luciano Rocha <> | Subject | Re: [RFC] Documentation about unaligned memory access |
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On Sat, Nov 24, 2007 at 06:35:25PM +0100, Pierre Ossman wrote: > On Sat, 24 Nov 2007 17:22:36 +0000 > Luciano Rocha <strange@nsk.no-ip.org> wrote: > > > On Sat, Nov 24, 2007 at 05:19:31PM +0100, Pierre Ossman wrote: > > > It most certainly does not. gcc will assume that an int* has int alignment. memcpy() is a builtin, which gcc can translate to pretty much anything. And C specifies that a pointer to foo, will point to a real object of type foo, so gcc can't be blamed for the unsafe typecasts. I have tested this the hard way, so this is not just speculation. > > > > Yes, on *int and other assumed aligned pointers, gcc uses its internal > > version. > > > > However, my point is that those pointers, unless speaking of packed > > structures, can safely be assumed aligned, while char*/void* can't. > > > > I get the sensation we're violently in agreement here, just misunderstanding each other. :)
That's it. :)
Sorry for the noise,...
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