[Bug network/17733] Resolver bind, getsockname namespace

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https://sourceware.org/bugzilla/show_bug.cgi?id=17733

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=935ab8179287f3b7aefdbe3829110d369be1a5c8

commit 935ab8179287f3b7aefdbe3829110d369be1a5c8
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon Dec 22 12:46:27 2014 +0000

    Fix resolver bind, getsockname namespace (bug 17733).

    On Linux architectures using socketcall, the resolver ends up bringing
    in strong symbols for bind and getsockname, which are not in
    POSIX.1-1996.  This causes linknamespace test failures:

    FAIL: conform/POSIX/pthread.h/linknamespace
    FAIL: conform/POSIX/sched.h/linknamespace
    FAIL: conform/POSIX/time.h/linknamespace

    These functions are defined as strong symbols with __bind and
    __getsockname as weak aliases.  This patch switches this to the other
    way round by removing the NO_WEAK_ALIAS definitions and so letting the
    default case in socket.S act; I see no reason for the existing
    arrangements.

    Tested for x86 (testsuite, and that disassembly of installed shared
    libraries is unchanged by the patch).

        [BZ #17733]
        * sysdeps/unix/sysv/linux/bind.S (NO_WEAK_ALIAS): Do not define.
        (__bind): Do not define as weak alias.
        * sysdeps/unix/sysv/linux/getsockname.S (NO_WEAK_ALIAS): Do not
        define.
        (__getsockname): Do not define as weak alias.

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

Summary of changes:
 ChangeLog                             |    9 +++++++++
 NEWS                                  |    2 +-
 sysdeps/unix/sysv/linux/bind.S        |    2 --
 sysdeps/unix/sysv/linux/getsockname.S |    2 --
 4 files changed, 10 insertions(+), 5 deletions(-)

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