[PATCH] readelf: Warn zero-sized relocation sections

[Alan Modra]

On Fri, Apr 17, 2020 at 10:57:04AM -0700, H.J. Lu wrote:
> Any ideas why ppc64 backend generates zero-sized relocation section:
> 
> tmpdir/libcomm-data.so:
> ...
>   [ 5] .rela.dyn         RELA            0000000000000160 000160
> 000000 18   A  3   0  8
> ...
> 
> Is this required by psABI?

No, it just looks to be something that isn't tidied.  The .rela.dyn
output section is created due to .rela.branch_lt being created as a
dynamic section, and not being sized early enough for
size_dynamic_sections to set SEC_EXCLUDE.  I'll see if I can make it
go away.

-- 
Alan Modra
Australia Development Lab, IBM