[lld] r267314 - ELF: Always include undefined DSO symbols in the symbol table.

[Rafael Espíndola via llvm-commits]

> If I append these lines to the test case:
>
>  .text
> call foo at PLT
> call bar at PLT
>
> I see the same behaviour in bfd and gold. It seems that gold will only
> include the symbols if the object file contains an appropriate relocation
> for them.
>
>> Please add a note to the test saying that. Please also open a bug. At
>> some point we should explicitly decide which behaviour is preferred.
>
>
> I'll add a note to the test, but do we care much about object files
> containing an undefined symbol with no relocations? I wouldn't have expected
> that to happen much outside of tests.

Thanks for checking. Given the explanation I actually prefer our (and
bfd's) behaviour. It is really nice to be able to make decisions about
the symbol table by looking only at the symbols.

Thanks,
Rafael