Well, the inclusion in the extensions is by no means a guarantee of inclusion in a future standard. A quick Google search reveals this view:

https://www.google.com/url?sa=t&source=web&cd=2&ved=2ahUKEwi3qPeJtuHlAhXY7Z4KHX0oAKwQFjABegQIBBAB&url=http%3A%2F%2Fwww.open-std.org%2Fjtc1%2Fsc22%2Fwg21%2Fdocs%2Fpapers%2F2019%2Fp1408r0.pdf&usg=AOvVaw0c3gIhAirNc6KT1xM_FmMM


In any case, it seems that my notion is not new. Thanks!

On Sun, Nov 10, 2019, 22:20 Jorg Brown <jorg.brown@gmail.com> wrote:
> Is it in serious consideration? 

Consideration for what?  It's part of Version 2 of the C++ Extensions for Library Fundamentals, ISO/IEC TS 19568:2017.

Code such as this currently compiles:

#include <experimental/memory>

int f() {
  int a = 1;
  std::experimental::observer_ptr<int> op(&a);
  *op += 1;
  return a;
}

As can be seen at https://godbolt.org/z/GQFeh4

= - = - = - = - =

> the current convention of using raw pointers to represent transient pointers.

std::span<T, 1> might also fill that need, depending on your application.


On Sun, Nov 10, 2019 at 9:09 PM Steve Weinrich via Std-Proposals <std-proposals@lists.isocpp.org> wrote:
None. I was not aware of observer_ptr. Is it in serious consideration? 

On Sun, Nov 10, 2019, 22:03 Andrew Tomazos <andrewtomazos@gmail.com> wrote:

On Mon, Nov 11, 2019 at 1:45 PM Steve Weinrich via Std-Proposals <std-proposals@lists.isocpp.org> wrote:
I was thinking that a non_owned_ptr would be a good std addition. The idea is to formalize the current convention of using raw pointers to represent transient pointers (transient_ptr might be a better name).

Aside from a lot of details, it would simply be a template wrapper around a raw pointer. On destruction, the wrapper would do nothing. 

This would allow the enforcement of the intended behavior. 

What do you all think? 
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