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Re: [PATCH] Enable preloading of new symbol versions [BZ #24974]

* Carlos O'Donell:

> On 10/2/19 7:36 AM, Florian Weimer wrote:
>> Can we please move the discussion forward?
> I think we've settled on:
> * No env var.
> * Add a DT_ tag to disable the check.
> * Users building the special preload DSOs need to set the
>   new DT_ tag.
> * Everything else is OK.

I have no recollection of that decision, or anyone else requesting that
we follow this approach.  I expect that this will require a more
invasive change to the dynamic linker.

Alan Modra pointed out how to avoid binutils changes for this:


I don't know if we can get a tag reservation for GNU gABI for this
feature.  I couldn't get one the last time, for .got.plt isolation (aka
safe lazy binding), so that project is now essentially dead.

I'm slightly concerned that what started out as a simple change is now
something that needs coordination between glibc, binutils (at least for
readelf), elfutils, and the GNU generic ABI.  Is this really the
consensus on this list?


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