Avoid privatization of TLS variables

H.J. Lu hjl.tools@gmail.com
Thu Sep 25 15:37:00 GMT 2014


On Thu, Sep 25, 2014 at 8:24 AM, Ian Lance Taylor <iant@google.com> wrote:
> On Wed, Sep 24, 2014 at 6:58 PM, Jan Hubicka <hubicka@ucw.cz> wrote:
>>
>>    b:   00 00
>>                         9: R_X86_64_TPOFF32     __gcov_indirect_call_counters_ltopriv
>
> Look at the .o file where __gcov_indirect_call_counters_ltopriv is
> defined.  That .o file must have the symbol marked as STT_TLS and it
> must be defined in a section with the SHF_TLS flag.  If that is not
> true, then that is your problem.

SHF_TLS isn't required.

    16: 0000000000000008     8 TLS     GLOBAL HIDDEN   COM
__gcov_indirect_call_counters_ltopriv
    17: 0000000000000008     8 TLS     GLOBAL HIDDEN   COM
__gcov_indirect_call_callee_ltopriv

are also sufficient.

-- 
H.J.



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