[rfc] Detect dwarf address size mismatch

[Mark Kettenis]

> Date: Tue, 17 Jul 2007 08:47:11 -0400
> From: Daniel Jacobowitz <drow@false.org>

Hi Daniel,

Sorry I didn't notice this before but:

> @@ -6792,6 +6793,15 @@ dwarf_decode_lines (struct line_header *
>  			     _("mangled .debug_line section"));
>  		  return;
>  		}
> +	      /* Make sure that we parsed the extended op correctly.  If e.g.
> +		 we expected a different address size than the producer used,
> +		 we may have read the wrong number of bytes.  */
> +	      if (line_ptr != extended_end)
> +		{
> +		  complaint (&symfile_complaints,
> +			     _("mangled .debug_line section"));
> +		  return;
> +		}
>  	      break;
>  	    case DW_LNS_copy:
>  	      if (lh->num_file_names < file)

The complaint "mangled .debug_line section" seems a bit unhelpful to
me, especially since there are now two identical messages for what
appears to be somewhat different conditions.  Any chance of changing
it something more distinguishable?

Mark