Hi,

I may simply have missed something, but I'm not sure to understand why the 
proposal adds user-facing restrictions instead of using a fallback from static 
to dynamic enforcement in case of violation of the NRR/NPCR rules (maybe with 
an additional warning).

> Le 13 mai 2017 à 04:29, Ben Cohen <ben_co...@apple.com> a écrit :
> 
> Hello Swift community,
> 
> The review of revisions to SE-0176: Enforce Exclusive Access to Memory begins 
> now and runs through May 17, 2017.
> 
> Most of this proposal was previously accepted.  An implementation issue has 
> been discovered with the use of dynamic enforcement on inout parameters.  The 
> proposal implementors suggest adopting a stronger rule governing the use of 
> non-escaping closures which will also allow Swift to make firm guarantees 
> about the use of static enforcement when a variable does not escape.  The 
> core team tentatively supports this new rule but believes it is a substantial 
> enough revision that it requires a separate review period.
> The proposal is available here: 
> https://github.com/apple/swift-evolution/blob/master/proposals/0176-enforce-exclusive-access-to-memory.md
> 
> Since this is a review of revisions only, you may find these two relevant 
> commits easier:
> https://github.com/apple/swift-evolution/commit/d61c07df2f02bee6c00528e73fbe33738288179a
> https://github.com/apple/swift-evolution/commit/5205a61f9cdca918d896269521bf89cb11e4aa12
> 
> Reviews are an important part of the Swift evolution process. All reviews 
> should be sent to the swift-evolution mailing list at:
> https://lists.swift.org/mailman/listinfo/swift-evolution
> 
> or, if you would like to keep your feedback private, directly to the review 
> manager. When replying, please try to keep the proposal link at the top of 
> the message:
> 
> Proposal link:
> 
> 
> https://github.com/apple/swift-evolution/blob/master/proposals/0176-enforce-exclusive-access-to-memory.md
> 
> 
> Reply text
> 
> Other replies
> What goes into a review?
> 
> The goal of the review process is to improve the proposal under review 
> through constructive criticism and, eventually, determine the direction of 
> Swift. When writing your review, here are some questions you might want to 
> answer in your review:
> 
>       • What is your evaluation of the proposal?
>       • Is the problem being addressed significant enough to warrant a change 
> to Swift?
>       • Does this proposal fit well with the feel and direction of Swift?
>       • If you have used other languages or libraries with a similar feature, 
> how do you feel that this proposal compares to those?
>       • How much effort did you put into your review? A glance, a quick 
> reading, or an in-depth study?
> More information about the Swift evolution process is available at:
> 
> https://github.com/apple/swift-evolution/blob/master/process.md
> 
> Thank you,
> 
> _______________________________________________
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-- 
Florent Bruneau

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