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Re: apps built w/ -fstack-protector-all segfault
On Wed, Nov 16, 2005 at 08:40:11PM +0100, Peter S. Mazinger wrote:
> On Wed, 16 Nov 2005, Richard Henderson wrote:
>
> > On Tue, Nov 15, 2005 at 09:01:21PM +0100, Peter S. Mazinger wrote:
> > > I meant exactly this, gcc supports -fno-stack-protector (although gcc
> > > defaults to no-ssp), so -fno-stack-protector-all should be there too
> >
> > Why? What option would it perform?
>
> to have the possibility to override an earlier one, as it is done w/ many
> fno* options. Why should this one not have it's counterpart.
There are three states we can be in:
(0) no stack protection -fno-stack-protector
(1) heuristic stack protection -fstack-protector
(2) all stack protection -fstack-protector-all
All of these three states have corresponding switches. You can
use any of them at any time.
But what does -fno-stack-protector-all mean? I claim it doesn't
mean anything at all, and is useless. I claim you either wanted
-fstack-protector or -fno-stack-protector.
r~