[Bug ld/20401] segfault in fini_reloc_cookie_rels() with --gc-sections

[nickc at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=20401

Nick Clifton <nickc at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |nickc at redhat dot com

--- Comment #1 from Nick Clifton <nickc at redhat dot com> ---
Hi Ozkan,

> We ran into a segfault with the djgpp port of ld in fini_reloc_cookie_rels()

Would it be possible for you to upload a small testcase that reproduces this
problem ?

> -  if (cookie->rels && coff_section_data (NULL, sec)->relocs != cookie->rels)
> +  if (cookie->rels && (!coff_section_data (NULL, sec) || coff_section_data
> (NULL, sec)->relocs != cookie->rels))

This is certainly a reasonable first step, but we ought to find out why the
coff_section_data is NULL.  Probably the linker garbage collection has deleted
the section, but it would be nice to confirm this.

Cheers
  Nick

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