[PATCH] BZ #19590: Fixed build of shared objects that use libmvec.so functions

Andrew Senkevich andrew.n.senkevich@gmail.com
Wed Feb 10 12:58:00 GMT 2016


2016-02-10 15:08 GMT+03:00 Florian Weimer <fweimer@redhat.com>:
> On 02/10/2016 12:36 PM, Andrew Senkevich wrote:
>
>>  #define ALIAS_IMPL(alias, target) \
>>  ENTRY (alias); \
>> -       call target; \
>> +       call target@PLT; \
>>         ret; \
>>  END (alias)
>
> This needs a comment why this cannot be a tail call (JMP).

Yes, it should be jmp.

> Out of curiosity, why is it not possible to avoid this indirection?  Why
> is this logic required in libmvec_nonshared.a?

It is workaround to exclude unnecessary symbol aliases in libmvec.so
(BZ #19058).


--
WBR,
Andrew



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