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Re: [PATCH 08/12] De-PLTize __stack_chk_fail internal calls within libc.so.
On 15 Dec 2016, Florian Weimer spake thusly:
> * Florian Weimer:
>
>> I think this means removing any definition of a C function definition
>> called __stack_chk_fail_local from libc.so, and instead use a strong
>> alias from __stack_chk_fail to __stack_chk_fail_local to define the
>> symbol. The alias will not incorporate a PLT reference. If you look at
>> include/libc-symbols.h, strong_alias and hidden_def are quite similar.
>
> It may also be a good idea to switch to a different symbol for
> __stack_chk_fail_local because this collides with the name GCC uses on
> some architectures for a similar purpose. Or is this the intent here?
That's the point. On targets where __stack_chk_fail_local is called
(e.g. x86-32), we're not generating the calls to this thing: GCC is.
We cannot pick a different name.
--
NULL && (void)