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[Bug libc/20023] fcntl.h timespec namespace


https://sourceware.org/bugzilla/show_bug.cgi?id=20023

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=35281b18b8f9907213410ebbebc23c71b2ec357a

commit 35281b18b8f9907213410ebbebc23c71b2ec357a
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon May 2 23:20:33 2016 +0000

    Fix fcntl.h timespec namespace (bug 20023).

    fcntl.h defines struct timespec if __USE_XOPEN || __USE_XOPEN2K8.  But
    (a) the subsequent bits/stat.h include only needs it if __USE_XOPEN2K8
    and (b) older standards did not allow struct timespec here.  (It's
    allowed for newer standards by virtue of the permission to include
    symbols from sys/stat.h.  But sys/stat.h is only required to provide
    struct timespec from the 2008 edition of POSIX onwards, and permitted
    by the 2004 TC to the 2001 edition in anticipation of the addition of
    nanosecond timestamp support to struct stat in the 2008 edition.)

    This patch limits the timespec definition to the __USE_XOPEN2K8 case,
    that being the only case where it is actually needed for the
    <bits/stat.h> include.

    Tested for x86_64 and x86 (testsuite, and that installed stripped
    shared libraries are unchanged by the patch).

        [BZ #20023]
        * io/fcntl.h [__USE_XOPEN && !__USE_XOPEN2K8]: Do not include
        <time.h>.
        * conform/Makefile (test-xfail-UNIX98/fcntl.h/conform): Remove
        variable.
        (test-xfail-XOPEN2K/fcntl.h/conform): Likewise.

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

Summary of changes:
 ChangeLog        |    9 +++++++++
 conform/Makefile |    2 --
 io/fcntl.h       |    4 +++-
 3 files changed, 12 insertions(+), 3 deletions(-)

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