[Bug dynamic-link/30186] RTLD_DEEPBIND interacts badly with LD_PRELOAD

["parky at outlook dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30186

--- Comment #8 from Matthew Parkinson <parky at outlook dot com> ---
> This might work, the hook requires a global load and branch but it should be 
> a predictable branch and performance should be ok.  I would require to add
> additional hooks on every malloc function, adding another configuration layer
> which is an extra complexity for malloc interposition (which I am not very
> found on).

I agree the complexity is not nice.  

> You might ask what other maintainers think about this approach,

Should I email libc-alpha to achieve this?

> I personally
> still think we should properly add preload option to have a more generic
> fix to fix symbol interpostion with RTLD_DEEPBIND for all possible symbols
> and not a ad-hoc fix for malloc.

This is not something I understand well enough to contribute to, so I am just
trying to understand if there is something I can do, or if I need to wait for a
solution.

Thanks

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