libffi on OpenBSD x86
Andrew Haley
aph@redhat.com
Wed Oct 20 13:46:00 GMT 2004
Anthony Green writes:
> On Wed, 2004-10-20 at 06:00, Thomas Heller wrote:
> > but it seems the stack smashing protection that OpenBSD uses prevents
> > ffi_call from working correctly.
> > I found the -fno-stack-protector command line option for gcc, and
> > specifying this did the trick.
> >
> > Now I'm not sure if there is a pragma which allows to disable the stack
> > protector from within the C source file, or should it be added to
> > libffi/configure somehow, or is there a way to pass this switch when
> > running libffi/configure?
>
> IIRC, this flag comes from a set of third-party GCC patches. It would
> certainly be easiest for the maintainer of those patches to cover the
> libffi directory as well.
I'd like to know how this stack protector works. Does it change the ABI?
Andrew.
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