[Bug ld/25882] .gnu.attributes are not checked for shared libraries

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25882

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6b728d3286a6e073e8cbdb63600e421de4f32dad

commit 6b728d3286a6e073e8cbdb63600e421de4f32dad
Author: Alan Modra <address@hidden>
Date:   Fri May 1 15:20:14 2020 +0930

    FIXME for merging of e_flags and .gnu.attributes

    Code in the linker, present before the addition of .gnu.attributes
    support, results in shared libraries not being considered by BFD when
    merging e_flags and .gnu.attributes from input files to the output.
    That doesn't seem correct to me, but I don't know enough about all the
    various ABIs to change the behaviour with any confidence.  So this
    patch merely punts on dynamic objects in merge_private_bfd_data target
    functions, with a FIXME for maintainer attention.

    I haven't excluded shared libraries from being considered where the
    target merge_private_bfd_data (a) already has code dealing with shared
    libraries, or (b) where that function just sets the output to the most
    constraining arch/mach combination and other fairly trivial merges, or
    (c) when the target has no shared library linker support.

    In (a) are: arc, arm, aarch64, riscv, sparc.
    In (b) are: bpf, cris, csky, m32r, m68k, mn10300, nios2, tilegx,
                tilepro, vax, visium, xtensa.
    In (c) are: bpf, cr16, h8300, iq2000, m32c, m68hc11, m68hc12, mcore,
                mep, msp430, mt, rl78, rx, v850.

            PR 25882
            * elf32-bfin.c (elf32_bfin_merge_private_bfd_data): Add FIXME.
            * elf32-frv.c (frv_elf_merge_private_bfd_data): Likewise.
            * elfxx-mips.c (_bfd_mips_elf_merge_private_bfd_data): Likewise.
            * elf32-nds32.c (nds32_elf_merge_private_bfd_data): Likewise.
            * elf32-score.c (s3_elf32_score_merge_private_bfd_data): Likewise.
            * elf32-score7.c (s7_elf32_score_merge_private_bfd_data): Likewise.
            * elf32-sh.c (sh_elf_merge_private_data): Likewise.
            * elf32-tic6x.c (elf32_tic6x_merge_attributes): Likewise.
            * elf64-ia64-vms.c (elf64_ia64_merge_private_bfd_data): Likewise.
            * elfnn-ia64.c (elfNN_ia64_merge_private_bfd_data): Likewise.

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