Re: Memory corruption due to word sharing

From: Michael Matz
Date: Thu Feb 02 2012 - 11:28:31 EST


On Thu, 2 Feb 2012, Aldy Hernandez wrote:

> > Seriously - is there any real argument *against* just using the base
> > type as a hint for access size?
> If I'm on the hook for attempting to fix this again, I'd also like to
> know if there are any arguments against using the base type.

Sure. Simplest example: struct s {int i:24;} __attribute__((packed)).

You must access only three bytes, no matter what. The basetype (int) is
four bytes.

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