relocations targeting discarded symbols

["Jan Beulich" <JBeulich at novell dot com>]

Alan,

as you seem to be the last one who touched that code (when moving it from
elflink.h to elflink.c), and since I cannot seem to find a way to look at the
history of elflink.h - what are the reasons behind

		  if (irela->r_offset >= (bfd_vma) -2)
		    {
		      /* This is a reloc for a deleted entry or somesuch.
			 Turn it into an R_*_NONE reloc, at the same
			 offset as the last reloc.  elf_eh_frame.c and
			 bfd_elf_discard_info rely on reloc offsets
			 being ordered.  */
		      irela->r_offset = last_offset;
		      irela->r_info = 0;
		      irela->r_addend = 0;
		      continue;
		    }

In particular,
- Why can't such relocations just be discarded?
- Why does r_offset need to be changed? I can't see why keeping the old
  offset would clobber the ordering (or prevent it from being established)
  here.

Thanks, Jan