[PATCH] Add Safe-Linking to fastbins and tcache

[DJ Delorie]

Adhemerval Zanella <adhemerval.zanella@linaro.org> writes:
> So although this patch does help improve the situation, I think we should
> move to a more robust and arch neutral way to obtain entropy for malloc
> hardnening. 

Can we agree to approve this patch, and replace the "12" with something
better later?  That way we'll at least make incremental progress.