[Bug libc/20348] FAIL: misc/tst-preadvwritev64

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https://sourceware.org/bugzilla/show_bug.cgi?id=20348

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f531f93056b34800383c5154280e7ba5112563c7

commit f531f93056b34800383c5154280e7ba5112563c7
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Jul 12 09:21:36 2016 -0700

    x86-64: Add p{read,write}[v]64 to syscalls.list [BZ #20348]

    64-bit off_t in pread64, preadv, pwrite64 and pwritev syscalls is passed
    in one 64-bit register for both x32 and x86-64.  Since the inline
    asm statement only passes long, which is 32-bit for x32, in registers,
    64-bit off_t is truncated to 32-bit on x32.  Since __ASSUME_PREADV and
    __ASSUME_PWRITEV are defined unconditionally, these syscalls can be
    implemented in syscalls.list to pass 64-bit off_t in one 64-bit register.

    Tested on x86-64 and x32 with off_t > 4GB on pread64/pwrite64 and
    preadv64/pwritev64.

        [BZ #20348]
        * sysdeps/unix/sysv/linux/x86_64/syscalls.list: Add pread64,
        preadv64, pwrite64 and pwritev64.

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

Summary of changes:
 ChangeLog                                    |    6 ++++++
 sysdeps/unix/sysv/linux/x86_64/syscalls.list |    4 ++++
 2 files changed, 10 insertions(+), 0 deletions(-)

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