Alternative libio vtable hardening approach

[Florian Weimer]

On 06/01/2016 08:16 PM, Florian Weimer wrote:

> I have to use weak references anyway to avoid linknamespace issues, and
> we can add more if the current approach pulls in too much additional code.

Just saving the patch—the method elimination is now so aggressive that 
required implementations are not pulled into static links.

Real patch forthcoming.

Florian

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