[Bug libc/23145] _init/_fini aren't marked as hidden

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=23145

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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=67c0579669ba1fc265d770252fab31babf887329

commit 67c0579669ba1fc265d770252fab31babf887329
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Jun 8 10:28:38 2018 -0700

    Mark _init and _fini as hidden [BZ #23145]

    _init and _fini are special functions provided by glibc for linker to
    define DT_INIT and DT_FINI in executable and shared library.  They
    should never be put in dynamic symbol table.  This patch marks them as
    hidden to remove them from dynamic symbol table.

    Tested with build-many-glibcs.py.

        [BZ #23145]
        * elf/Makefile (tests-special): Add $(objpfx)check-initfini.out.
        ($(all-built-dso:=.dynsym): New target.
        (common-generated): Add $(all-built-dso:$(common-objpfx)%=%.dynsym).
        ($(objpfx)check-initfini.out): New target.
        (generated): Add check-initfini.out.
        * scripts/check-initfini.awk: New file.
        * sysdeps/aarch64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/alpha/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/arm/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/hppa/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/i386/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/ia64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/m68k/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/microblaze/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/mips/mips32/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/mips/mips64/n32/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/mips/mips64/n64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/nios2/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/powerpc/powerpc32/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/powerpc/powerpc64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/s390/s390-32/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/s390/s390-64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/sh/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/sparc/crti.S (_init): Mark as hidden.
        (_fini): Likewise.
        * sysdeps/x86_64/crti.S (_init): Mark as hidden.
        (_fini): Likewise.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                        |   48 +++++++++++++++++++++++++++++
 elf/Makefile                     |   15 ++++++++-
 scripts/check-initfini.awk       |   63 ++++++++++++++++++++++++++++++++++++++
 sysdeps/aarch64/crti.S           |    2 +
 sysdeps/alpha/crti.S             |    2 +
 sysdeps/arm/crti.S               |    2 +
 sysdeps/hppa/crti.S              |    2 +
 sysdeps/i386/crti.S              |    2 +
 sysdeps/ia64/crti.S              |    2 +
 sysdeps/m68k/crti.S              |    2 +
 sysdeps/microblaze/crti.S        |    2 +
 sysdeps/mips/mips32/crti.S       |    2 +
 sysdeps/mips/mips64/n32/crti.S   |    2 +
 sysdeps/mips/mips64/n64/crti.S   |    2 +
 sysdeps/nios2/crti.S             |    2 +
 sysdeps/powerpc/powerpc32/crti.S |    2 +
 sysdeps/powerpc/powerpc64/crti.S |    2 +
 sysdeps/s390/s390-32/crti.S      |    2 +
 sysdeps/s390/s390-64/crti.S      |    2 +
 sysdeps/sh/crti.S                |    2 +
 sysdeps/sparc/crti.S             |    2 +
 sysdeps/x86_64/crti.S            |    2 +
 22 files changed, 163 insertions(+), 1 deletions(-)
 create mode 100644 scripts/check-initfini.awk

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