Purpose of the elf/check-localplt test

[Florian Weimer]

What's the exact purpose of elf/check-localplt?

We do not want to use run-time relocations for calls within the same 
shared object on architectures which support efficient PC-relative 
calls.  We also want to avoid interposable symbol references.

But elf/check-localplt doesn't quite check these things.  For example, 
on x86_64, all X86_64_GLOB_DAT relocations are ignored.  Technically, 
this is perhaps correct because there is no PLT entry.  But checking 
things this way seems to provide rather limited value.

Thanks,
Florian