On Sun, Apr 9, 2017 at 9:15 PM, Alan Modra <amodra@gmail.com> wrote:
> HJ,
> This test is failing on x86_64-linux with --enable-targets=all.
>
> ../gas/as-new ~/src/binutils-gdb/binutils/testsuite/binutils-all/i386/pr21231b.s --32 -o tmpdir/i386temp.o
> ./objcopy   tmpdir/i386temp.o  tmpdir/i386copy.o
> ./objcopy: warning: tmpdir/i386temp.o: unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000000
>
> ./objcopy: warning: tmpdir/i386temp.o: unsupported GNU_PROPERTY_TYPE (5) type: 0xc0000001
>
> echo $?
> 0
>
> The problem is that the warning is being emitted during object
> recognition.
>
> #0  _bfd_elf_parse_gnu_properties (abfd=abfd@entry=0xc91f40, note=note@entry=0x7fffffffd620) at /home/alan/src/binutils-gdb/bfd/elf-properties.c:171
> #1  0x0000000000446bed in elfobj_grok_gnu_note (note=0x7fffffffd620, abfd=0xc91f40) at /home/alan/src/binutils-gdb/bfd/elf.c:9757
> #2  elf_parse_notes (abfd=abfd@entry=0xc91f40, buf=0xca29e0 "\004", size=60, offset=52) at /home/alan/src/binutils-gdb/bfd/elf.c:10893
> #3  0x000000000044a8a8 in _bfd_elf_make_section_from_shdr (abfd=0xc91f40, hdr=0xc92e68, name=<optimised out>, shindex=<optimised out>) at /home/alan/src/binutils-gdb/bfd/elf.c:1065
> #4  0x00000000004491f1 in bfd_section_from_shdr (abfd=abfd@entry=0xc91f40, shindex=shindex@entry=4) at /home/alan/src/binutils-gdb/bfd/elf.c:2503
> #5  0x000000000048312b in bfd_elf32_object_p (abfd=0xc91f40) at /home/alan/src/binutils-gdb/bfd/elfcode.h:804
> #6  0x000000000042e7af in bfd_check_format_matches (abfd=abfd@entry=0xc91f40, format=format@entry=bfd_object, matching=matching@entry=0x7fffffffda98) at /home/alan/src/binutils-gdb/bfd/format.c:311
>
> At this point, we are checking
>  p abfd->xvec
> $2 = (const struct bfd_target *) 0x826b00 <elf32_le_vec>
>
> That's the generic ELF target, with no bed->parse_gnu_properties.
> You can't emit errors/warnings in _bfd_elf_parse_gnu_properties except
> for those that will occur for all targets.  Please fix.
>

Here is a patch to make generic ELF target vectors the last resort.

-- 
H.J.