[Bug libc/17999] scandir scandirat namespace

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https://sourceware.org/bugzilla/show_bug.cgi?id=17999

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=40176158f1bfcf4fd1621169221c1aa8f0c3c300

commit 40176158f1bfcf4fd1621169221c1aa8f0c3c300
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Thu Feb 19 17:18:51 2015 +0000

    Fix scandir scandirat namespace (bug 17999).

    The POSIX function scandir calls scandirat, which is not a POSIX
    function.  This patch fixes this by making it use __scandirat and
    making scandirat a weak alias.  There are no changes for scandir64 /
    scandirat64 because those are both _GNU_SOURCE-only functions so no
    namespace issue arises for them.

    Tested for x86_64 that the disassembly of installed shared libraries
    is unchanged by this patch.

        [BZ #17999]
        * dirent/scandir.c [!SCANDIR] (SCANDIRAT): Define to __scandirat
        instead of scandirat.
        * dirent/scandirat.c [!SCANDIRAT] (SCANDIRAT): Likewise.
        [!SCANDIRAT] (SCANDIRAT_WEAK_ALIAS): Define.
        [SCANDIRAT_WEAK_ALIAS] (scandirat): Define as weak alias of
        __scandirat.
        * include/dirent.h (scandirat): Do not use libc_hidden_proto.
        (__scandirat): Declare.  Use libc_hidden_proto.
        * conform/Makefile (test-xfail-POSIX2008/dirent.h/linknamespace):
        Remove variable.
        (test-xfail-XOPEN2K8/dirent.h/linknamespace): Likewise.

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

Summary of changes:
 ChangeLog          |   15 +++++++++++++++
 NEWS               |    2 +-
 conform/Makefile   |    2 --
 dirent/scandir.c   |    2 +-
 dirent/scandirat.c |    6 +++++-
 include/dirent.h   |    3 ++-
 6 files changed, 24 insertions(+), 6 deletions(-)

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