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[PATCH] Add non-const std::basic_string::data() for C++17

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, 1 Aug 2016 21:12:51 +0100
Subject: [PATCH] Add non-const std::basic_string::data() for C++17
Authentication-results: sourceware.org; auth=none

This is a minimal version of the change I reverted recently. This adds
the non-const data() overload, without supporting fancy pointers for
allocator_type::pointer and without needing to export the new function
(because we suppress the explicit instantiation declarations for C++17
now).

	* include/bits/basic_string.h (data() const): Update comment.
	(data()): Add non-const overload for C++17.
	* testsuite/21_strings/basic_string/operations/data/char/2.cc: New.
	* testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc: New.

Tested powerpc64-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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