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[PATCH, libstdc++]: Fix PR 70975, experimental/filesystem/operations/copy.cc FAILs on Solaris 12

From: Uros Bizjak <ubizjak at gmail dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: "libstdc++" <libstdc++ at gcc dot gnu dot org>, Jonathan Wakely <jwakely at redhat dot com>, Rainer Orth <ro at cebitec dot uni-bielefeld dot de>
Date: Thu, 27 Oct 2016 20:33:55 +0200
Subject: [PATCH, libstdc++]: Fix PR 70975, experimental/filesystem/operations/copy.cc FAILs on Solaris 12
Authentication-results: sourceware.org; auth=none

Attached patch improves sendfile syscall compatibility with (older)
Solaris 12, where non-null third argument is required. It also paves
the way for compatibility with Solaris 10/11, where otherwise
additional -lsendfile is needed to link with libsendfile library. The
change has no effect on linux.


2016-10-27  Uros Bizjak  <ubizjak@gmail.com>

    PR libstdc++/70975
    * src/filesystem/ops.cc (do_copy_file) [_GLIBCXX_USE_SENDFILE]:
    Use pointer to zero as non-null third argument of sendfile call.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32} CentOS
5 and Fedora 24. Also tested by Rainer on older Solaris 12, where the
patch fixes testsuite failure.

OK for mainline?

Uros.

Attachment: l.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, libstdc++]: Fix PR 70975, experimental/filesystem/operations/copy.cc FAILs on Solaris 12
  - From: Jonathan Wakely

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