[llvm-dev] [LLD] Can't create dynamic relocation R_X86_64_64 against local symbol in readonly segment

[Martin Richtarsky via llvm-dev]

Rafael Avila de Espindola wrote:
>> $ gcc -o rodatareloc.s.o -c rodatareloc.s
>> $ lld -o rodatareloc.so -shared rodatareloc.s.o
>>
>> ld: error: rodatareloc.s.o:(.rodata+0x0): can't create dynamic
>> relocation
>> R_X86_64_64 against local symbol in readonly segment defined in
>> rodatareloc.s.o
>>
>>
>> Changing the section from .rodata to .data fixes it, but I guess this
>> should be supported also for .rodata. Should I open a bug?
>
> I think this is just a difference in defaults. If you pass "-z notext"
> to lld it should work.

Thanks, this helps! Any reason why the defaults are different to gold and
presumably bfd-ld?

I don't understand much of what is happening behind the scenes, but on
loading time, couldn't the rodata section just be mapped read-only, and
still the relocation be applied to the text section, pointing to wherever
rodata was mapped? No modification should be necessary to the rodata
section.

Thanks and Best regards,
Martin