displays dynamic segment even if no .dynamic section
Thu Jul 12 10:30:00 GMT 2007
On Jul 12, 2007, at 1:34 AM, Jim Wilson wrote:
> On Mon, 2007-06-25 at 14:42 +0200, Tristan Gingold wrote:
> I lack info and access to an Itanium VMS system. Also, there is no
> Itanium VMS support in FSF binutils.
Right. We have a very preliminary port here but far from being
complete (ld need much work).
> Anyways, this means I can only go
> by the info you have given me.
> I'm puzzled about what exactly the failure case is here. If there are
> no section headers, then the existing code will already do what you
> If there are section headers, but no .dynamic section in the
> headers (or a zero size .dynamic section), then the existing code will
> give an error.
> This is true even with your patch, so your patch does
> not seem to fix the problem you have described.
Here I am puzzled about your reply!
If there is no .dynamic section, an error is printed but dynamic_addr
and dynamic_size are set from segment and .dynamic is
eventually displayed. Am I missing something else ? (I have tested
this patch on the odd VMS executable).
For reference, here is an excerpt of the modified code:
error (_("more than one dynamic segment\n"));
/* By default, we can only assume that the .dynamic
section is the first section in the DYNAMIC segment. */
dynamic_addr = segment->p_offset;
dynamic_size = segment->p_filesz;
/* Try to locate the .dynamic section. If there is
a section header table, we can easily locate it. */
if (section_headers != NULL)
sec = find_section (".dynamic");
if (sec == NULL || sec->sh_size == 0)
error (_("no .dynamic section in the dynamic segment\n"));
if (sec->sh_type == SHT_NOBITS)
> Looking at the code,
> the only case where the patch seems to do anything different is if
> are section headers, there is a .dynamic section in the headers,
> but the
> dynamic section has SHT_NOBITS. In this case, dynamic_addr is not set
> without your patch, and is set with your patch. However, it isn't
> to me why you want to do this. Why use the section if it is
> empty? I'm
> also not sure how a section can have non-zero size and SHT_NOBITS set,
> but I'm not a linker expert.
In fact error() doesn't exit.
More information about the Binutils