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[PATCH] LWG 2989 hide path iostream operators from normal lookup

From: Jonathan Wakely <jwakely at redhat dot com>
To: libstdc++ at gcc dot gnu dot org, gcc-patches at gcc dot gnu dot org
Date: Mon, 18 Jun 2018 19:59:37 +0100
Subject: [PATCH] LWG 2989 hide path iostream operators from normal lookup

By only defining these operators as friends (with no namespace-scope
declaration) they can only be found by ADL and do not participate in
overload resolution for arguments of types other than path.

	LWG 2989 hide path iostream operators from normal lookup
	* include/bits/fs_path.h (operator<<, operator>>): Define inline as
	friends.
	* testsuite/27_io/filesystem/path/io/dr2989.cc: New.

Tested powerpc64le-linux, commmitted to trunk.

Attachment: patch.txt
Description: Text document

Follow-Ups:
- Re: [PATCH] LWG 2989 hide path iostream operators from normal lookup
  - From: François Dumont

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