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[PATCH] PR libstdc++/81381 support stateful allocators in basic_stringbuf

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, 10 Jul 2017 19:07:29 +0100
Subject: [PATCH] PR libstdc++/81381 support stateful allocators in basic_stringbuf
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This allows using non-DefaultConstructible and stateful allocators
with basic_stringbuf, by copying the allocator from the basic_string.

	PR libstdc++/81381
	* include/bits/sstream.tcc (basic_stringbuf::overflow)
	(basic_stringbuf::basic_stringbuf(const __string_type&, ios::mode))
	(basic_stringbuf::str()): Construct new strings with an allocator.
	* testsuite/27_io/basic_stringbuf/cons/81381.cc: New.

Tested powerpc64le-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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