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Re: RFC: -Bsymbolic, hidden and protected

On Thu, Mar 03, 2005 at 07:55:04AM -0800, H. J. Lu wrote:
> On Thu, Mar 03, 2005 at 11:19:13PM +1030, Alan Modra wrote:
> > On Wed, Mar 02, 2005 at 08:14:59PM -0800, H. J. Lu wrote:
> > > Protected visibility has almost everything, but requires
> > > special handling at run-time.
> > > 
> > > I was wondering if we could allow version script to overwrite
> > > hidden symbols. That is if a symbol is global in version script, we
> > > export it even if it is marked hidden. It may improve run-time
> > > performance.
> > 
> > How is this going to be different from using protected symbols?
> 
> No run-time special handling accociated with protected symbols, which
> may take extra lookup.

Also compiler/linker can't optimize protected function pointers.


H.J.
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