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# [[!debbug 630180]]


# [[open_issues/binutils]] commit 51b2f560ad035dffad3371093f8e5c80608d196c

Usage of `ELFOSABI_LINUX`/`STB_GNU_UNIQUE`.  Has also been wrong before already
with respect to `STT_GNU_IFUNC`?


# IRC

IRC, freenode, #debian-hurd, 2011-06-11

    <pinotree> youpi: not that there would be any hope in that, but id you try
      asking doko about the gcc miscompiling (wrong elf format) issue?
    <youpi> I didn't
    <youpi> I'm still investigating
    <youpi> maybe it's a binutils change actually
    <pinotree> youpi: hm, are you sure it could be binutils? after all, even
      some .o files are produced with format gnu/linux, so there's no binutils
      involved up to that point of thecompilation yet?
    <youpi> as is
    <youpi> "as", I mean
    <pinotree> i see
    <youpi> since it's so unclear, I really prefer to investigate before
      bothering doko
    <pinotree> youpi: maybe i could be wrong,
    <pinotree> in binutils, bfd/elf.c, around lines 9580
    <youpi> the faulty thing seems to be gnu_unique_object in the source .s
      file produced by g++
    <pinotree> that's what that comment (which changed wrt binutils from eg
      march) says
    <youpi> seems to concur with my comment above :)
    <pinotree> http://paste.debian.net/119542/ ‘¡û extract of diff
    <youpi> ok, that really seems the culprit
    <youpi> starting reportbug
    <pinotree> who's the fault then?
    <youpi> binutils
    <youpi> it shouldn't hardcode LINUX
    <pinotree> g++ emitting those symbols, or binutil considering them "linux"?
    <youpi> it's a GNU thing, not a Linux thing
    <pinotree> ah ok
    <youpi> it's the same dynamic linker actually
    <pinotree> youpi: http://sourceware.org/bugzilla/show_bug.cgi?id=10549
    <pinotree> see the reporter :)
    <youpi> heh
    <pinotree> youpi: see also gas/config/obj-elf.c:1725
    <pinotree> (another change related to that bug, it seems)

IRC, freenode, #hurd, 2011-06-15

    <jkoenig> also I still get an "ELF file OS ABI invalid" error with binutils
      2.21.52.20110606-2+hurd.1, is that expected?
    <youpi> tschwinge: oops, the OS ABI invalid is actually due to the file
      being marked GNU/Hurd
    <youpi> I guess the linker is simply not aware that it should accept
      GNU/Hurd
    <tschwinge> youpi: So we got to work on glibc'S ld.so to teach it aboput
      the Hurd OS ABI?  (Or probably simply make that equivalent to the Linux
      one?)
    <youpi> probably simply an equivalent
    <youpi> ELFOSABI_HURD is missing from elf/elf.h, for a start...
    <youpi> linux' glibc has tests in lsdodefs.h
    <youpi> the VALID_ELF_OSABI macro
    <youpi> it's thus apparently a matter of providing an ldsodefs.h file with
      VALID_ELF_HEADER, VALID_ELF_OSABI and VALID_ELF_ABIVERSION definitions
    <youpi> (and include_next the generic one)
    <youpi> I've prepared a patch for ldsodefs.h, I'll test it