Date: Mon, 5 Jul 2004 17:10:59 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: des@des.no Cc: current@freebsd.org Subject: Re: recent libalias changes Message-ID: <20040705161059.GA52584@walton.maths.tcd.ie> In-Reply-To: <xzp1xjqbhee.fsf@dwp.des.no> References: <20040705133820.GA9159@stud.fit.vutbr.cz> <xzp1xjqbhee.fsf@dwp.des.no>
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On Mon, Jul 05, 2004 at 05:30:49PM +0200, des@des.no wrote:
> Divacky Roman <xdivac02@stud.fit.vutbr.cz> writes:
> > I can sadly report that recent changes to libalias made by des doesnt
> > help me use natd with -Os built libalias.. it still doesnt work ;(
>
> Could you please try to figure out exactly which optimization option
> breaks libalias? It is most likely one of these:
With Divacky's help we localised his problem to alias.c. The twowords
function breaks the strick aliasing rule, try replacing it with:
static __inline int
twowords(void *p)
{
unsigned char *c = p;
return ((((unsigned short)c[1] + (unsigned short)c[3])<<8) + c[0] + c[2];
}
David.
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