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[PATCH] Define std::__to_address helper

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: Wed, 13 Sep 2017 08:28:35 +0100
Subject: [PATCH] Define std::__to_address helper
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As discussed a few weeks ago, this adds a helper to get a raw pointer
from any pointer-like type, and usees that helper where appropriate.

	* include/bits/allocated_ptr.h (__allocated_ptr::get): Use
	__to_address.
	(__allocated_ptr::_S_raw_ptr): Remove.
	* include/bits/forward_list.h (_Fwd_list_base::_M_get_node): Use
	__to_address.
	* include/bits/hashtable_policy.h (_Hashtable_alloc): Likewise.
	* include/bits/ptr_traits.h (__to_address): Define new function
	template.
	* include/bits/shared_ptr_base.h (__shared_ptr): Use __to_address.
	(__shared_ptr::_S_raw_ptr): Remove.
	* include/bits/stl_vector.h [__cplusplus >= 201103L]
	(vector::_M_data_ptr): Use __to_address.
	[__cplusplus < 201103L] (vector::_M_data_ptr): Don't dereference
	possibly invalid pointers.
	* include/ext/alloc_traits.h (__alloc_traits::construct)
	(__alloc_traits::destroy): Use __to_address.

Tested powerpc64le-linux, committed to trunk.

Attachment: patch.txt
Description: Text document

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