220 28932 <8a6731f7-1c9b-482d-817e-c2374fc9ae1b@isocpp.org> article Path: news.gmane.org!.POSTED!not-for-mail From: mihailnajdenov@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Is World's Dumbest Pointer still on the table?!? Date: Tue, 18 Oct 2016 03:03:53 -0700 (PDT) Lines: 73 Approved: news@gmane.org Message-ID: <8a6731f7-1c9b-482d-817e-c2374fc9ae1b@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_238_560385694.1476785033287" X-Trace: blaine.gmane.org 1476785058 18346 195.159.176.226 (18 Oct 2016 10:04:18 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 18 Oct 2016 10:04:18 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCUJ3A7GRAPRBCXHS7AAKGQECUNTA5I@isocpp.org Tue Oct 18 12:04:10 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yw0-f200.google.com ([209.85.161.200]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bwRFR-0001lE-PB for gclcip-std-proposals@m.gmane.org; Tue, 18 Oct 2016 12:03:53 +0200 Original-Received: by mail-yw0-f200.google.com with SMTP id u124sf347484425ywg.3 for ; Tue, 18 Oct 2016 03:03:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:subject:mime-version:x-original-sender :reply-to:precedence:mailing-list:list-id:x-spam-checked-in-group :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=cK5O6WblTXjy0gBs2TtBdaH4ZSv8PUfqtc3ZZf7iEWg=; b=bdR3G9y/ZaeB3gzOz4wXURAhis0CIa/Bko7Kh39P7xWB1JEbjy/hu0QOmHyxSJiWYr 5pcih4o0g5eobd1odE6J1T/WXYp29MKHMO1SuboZPzy4UhllfGRxY9IR/ga3vu4UDeWa PdGv5h+sPz5EYzjwpn2rm/mWp+ujxODqmCOSM/B6/pbruqF4iGB1P5MtEJqlDyem60oa VNxcKKZMHINvS9FHoORSbHI+KVJLgmdN24eK2J9OqMvkCWNa1ISVYPGgrT5SH/rgJt6b XKGaOUkSjqnMYhdxADcjXarcvuhzIRRO5AL4K+lqZ4pe/povpDG+oOxjviz5tmhofqnX xgiw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:subject:mime-version:x-original-sender :reply-to:precedence:mailing-list:list-id:x-spam-checked-in-group :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=cK5O6WblTXjy0gBs2TtBdaH4ZSv8PUfqtc3ZZf7iEWg=; b=Nb0OY2p2YESIy+bQV054a4RQ/wFO9iFCpPNhI7MEmW45qkw6iHAozdSoJLtvJfBXTH LqmoS+SRnFi+GYeg+in7qmn9GgmfchFso68Iz72L3xs05nQJqIm1EpYbAlP8BemK9pqy 3uexPfkfzNISQRPThEmHuoinikyU/UoxUWJe/XKAHiDvIP6XX4RfF7E8v6gTcaP+h2w3 W6sd/NJPMco5dnHrO+gyXiv3B3Xnspr8u/7W9at3Qyy3HAUv9hZ0CjgwZMv3VnyPjx36 qsumCX4BbSdS97y5gdgQa/puaYd4K+FnNmbeiz4JZkQIq8ZchQZaw1EApDoOrxYhWT1B NjSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=cK5O6WblTXjy0gBs2TtBdaH4ZSv8PUfqtc3ZZf7iEWg=; b=PGGweLDioB/Xh0J6P8ki076/piDJps5YDVgRpLlrxkY+wG7oCi+XwmUIMsBEW2IDfj bM/VKdZLNwcFKGNMYQxBAMollMYvJq9JK2KjEcu+0df2IOkYoV1Xcn3mUFSVuUJogkmC l5NFJ9MaWbf2HIwGSVG7S0uaHZ26PoV7/XYm82zjkZM9VlcEBg/OJKNPQ1aTeTRdAoIA cDy5G/ya3JNW8XVK8yqXwmCN8DroSdkfk3LiHZ9o27xDbo940QqrzacTeK1ZKTD32I7A ukL4CDSrd1yl87PZ/PfBnbGssnWyCuNA8qDpTUxM6W0wkGIvrM+J9/hW66mqmuT3lrjz fq2w== X-Gm-Message-State: AA6/9RlMgTX12/Q0aA/+Gktcxo+gaA4aUQv8Gzd0BliVzRRpshG87L64OY91jkh0Ex2ymQ== X-Received: by 10.129.52.204 with SMTP id b195mr549473ywa.110.1476785035654; Tue, 18 Oct 2016 03:03:55 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.18.85 with SMTP id a82ls5393940ioj.7.gmail; Tue, 18 Oct 2016 03:03:54 -0700 (PDT) X-Received: by 10.36.225.205 with SMTP id n196mr10176ith.0.1476785034627; Tue, 18 Oct 2016 03:03:54 -0700 (PDT) X-Original-Sender: MihailNajdenov@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:28932 Archived-At: ------=_Part_238_560385694.1476785033287 Content-Type: multipart/alternative; boundary="----=_Part_239_1005529967.1476785033287" ------=_Part_239_1005529967.1476785033287 Content-Type: text/plain; charset=UTF-8 I was surprised to see http://en.cppreference.com/w/cpp/experimental/observer_ptr I though, it was settled, raw pointers will be serving as non-owning pointers? (and use references, as well not_null<> and owner<> to cover corner cases and legacy) Also, observer_ptr is not without problems too. For instance, it has lifetime management API (reset, release) although it does not manage lifetime! Right now if you see reset or release in code, it means the object lifetime has been altered - either deleted, a ref dropped or no longer managed. observer_ptr will change that for the worse - these will start to mean something different. Also, it can be well misleading, it monitors object lifetime - after all other smart pointers *control *lifetime, this one is probably just *observing* it. -- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/8a6731f7-1c9b-482d-817e-c2374fc9ae1b%40isocpp.org. ------=_Part_239_1005529967.1476785033287 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I was surprised to see http://en.cppreference.com/w/c= pp/experimental/observer_ptr

I though, it was set= tled, raw pointers will be serving as non-owning pointers? (and use referen= ces, as well not_null<> and=C2=A0owner<> to cover corner cases = and legacy)

Also, observer_ptr is not without = problems too.

For instance, it has lifetime manage= ment API (reset, release) although it does not manage lifetime!
<= br>
Right now if you=C2=A0see reset or release in=C2=A0code, it m= eans the object lifetime has been altered - either deleted, a ref dropped o= r no longer managed.
observer_ptr will change that for the worse = - these will start to mean something different.
=C2=A0
= Also,=C2=A0it can be well misleading, it monitors object lifetime - after a= ll other smart pointers control lifetime, this one is probably just = observing it.

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To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+unsubscribe@isocpp.org.
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