Re: PR23611, objcopy is not removing executable relocatable sections

[Alan Modra <amodra at gmail dot com>]

On Tue, Sep 11, 2018 at 04:43:00PM +0000, Michael Matz wrote:
> Hi,
> 
> On Tue, 11 Sep 2018, Alan Modra wrote:
> 
> > Incidentally, another wart is that not all relocation sections start 
> > with ".rela." or ".rel.".  A section FOO has .relaFOO or .relFOO for 
> > relocations.
> 
> As it should be.  The second '.' in ".rela.text" comes from ".text" not 
> from ".rela.".  If $section is "FOO" the relocation section should be 
> named .relaFOO, and if it's "%bar" it should be named ".rela%bar" 
> (assuming '%' is a valid section name character of course :) ).  

We are in agreement up to this point.

> Everything else introduces special cases (e.g. what if there's a "FOO" and 
> a ".FOO" section, vs. if there's _only_ a ".FOO" section?).
> 
> > You might like to fix that, patch preapproved.
> 
> Ugh, please don't.

At the moment "objcopy -R .relaFOO -R .relFOO" doesn't remove
relocations for section "FOO" in a relocatable object file.  Why
shouldn't we make that work?

-- 
Alan Modra
Australia Development Lab, IBM