Re: Smashing the Stack?

[Sebastian Hegenbart <pr1 () u-n-f com>]

 On Wed, 17 Jul 2002 21:11:21 +0100
 strange () nsk yi org wrote:
 
> On Wed, Jul 17, 2002 at 01:34:38PM -0400, Eric Thomas wrote:
> > I went through this same mystery a few months ago.  Apparently GCC pads
> > the generated assembly for better memory alignment, which makes certain
> > operations faster.  
>
> And in some archs, legal. Non-align memory access is illegal in some archs,
> and non-existant in others (MIPS ignores the last 2/4(?) bits, anyway).
 
 
Note that writing to unaligned memory addresses is a CPU feature of
the x86 family. The CPU will complain if the AC ( alignment check ) flag
is set in the flag register.  
 
lates pr1