[Bug network/16849] getaddrinfo returns EAI_NONAME instead of EAI_AGAIN for network failures

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16849

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cf26a0cb6a0bbaca46a01ddad6662e5e5159a32a

commit cf26a0cb6a0bbaca46a01ddad6662e5e5159a32a
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Thu May 15 12:33:11 2014 +0530

    Return EAI_AGAIN for AF_UNSPEC when herrno is TRY_AGAIN (BZ #16849)

    getaddrinfo correctly returns EAI_AGAIN for AF_INET and AF_INET6
    queries.  For AF_UNSPEC however, an older change
    (a682a1bf553b1efe4dbb03207fece5b719cec482) broke the check and due to
    that the returned error was EAI_NONAME.

    This patch fixes the check so that a non-authoritative not-found is
    returned as EAI_AGAIN to the user instead of EAI_NONAME.

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

Summary of changes:
 ChangeLog                   |    6 ++++++
 NEWS                        |    4 ++--
 sysdeps/posix/getaddrinfo.c |    3 +--
 3 files changed, 9 insertions(+), 4 deletions(-)

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