On Monday, February 26, 2018 at 2:24:39 PM UTC-5, Ian Lance Taylor wrote:
>
> On Mon, Feb 26, 2018 at 9:42 AM,  <di...@veryhaha.com <javascript:>> 
> wrote: 
> > 
> > On Monday, February 26, 2018 at 12:35:13 PM UTC-5, Jakob Borg wrote: 
> >> 
> >> On 26 Feb 2018, at 18:21, "di...@veryhaha.com" <di...@veryhaha.com> 
> wrote: 
> >> 
> >> On Monday, February 26, 2018 at 11:48:36 AM UTC-5, Jakob Borg wrote: 
> >>> 
> >>> On 26 Feb 2018, at 16:38, di...@veryhaha.com wrote: 
> >>> 
> >>> 
> >>> Will the "sync/atomic" package get broken? 
> >>> This atomic package imports unsafe. 
> >>> 
> >>> 
> >>> If changes to unsafe break sync/atomic it’s up to the Go team to fix 
> >>> sync/atomic before releasing. Much like it’s up to other package 
> authors to 
> >>> make sure their packages work when unsafe changes, if they depend on 
> package 
> >>> unsafe. You can depend on sync/atomic working. 
> >> 
> >> Show Quoted Content 
> >>> 
> >>> On 26 Feb 2018, at 16:38, di...@veryhaha.com wrote: 
> >>> 
> >>> 
> >>> Will the "sync/atomic" package get broken? 
> >>> This atomic package imports unsafe. 
> >>> 
> >>> 
> >>> If changes to unsafe break sync/atomic it’s up to the Go team to fix 
> >>> sync/atomic before releasing. Much like it’s up to other package 
> authors to 
> >>> make sure their packages work when unsafe changes, if they depend on 
> package 
> >>> unsafe. You can depend on sync/atomic working. 
> >>> 
> >>> On 26 Feb 2018, at 16:38, di...@veryhaha.com wrote: 
> >>> 
> >>> 
> >>> Will the "sync/atomic" package get broken? 
> >>> This atomic package imports unsafe. 
> >>> 
> >>> 
> >>> If changes to unsafe break sync/atomic it’s up to the Go team to fix 
> >>> sync/atomic before releasing. Much like it’s up to other package 
> authors to 
> >>> make sure their packages work when unsafe changes, if they depend on 
> package 
> >>> unsafe. You can depend on sync/atomic working. 
> >> 
> >> 
> >> I mean whether or not the prototypes of the pointer functions in the 
> >> atomic packages will change? 
> >> 
> >> 
> >> I think it's a safe bet that unsafe.Pointer will continue to exist. 
> >> 
> >> //jb 
> > 
> > 
> > But even if it exits, those pointer atomic functions will still become 
> > unusable if the unsafe mechanism is not supported any more. 
>
> The Go 1 compatibility guarantee, applied to the sync/atomic package, 
> ensures that the type unsafe.Pointer will continue to exist for the 
> duration of Go 1. 
>
> However, the precise details of how unsafe.Pointer may be used are 
> permitted to change.  And, in fact, they have changed in the past: 
> older versions of Go permitted uses of unsafe.Pointer that current 
> versions of Go do not permit. 
>

ok, I see.

My current understanding is,
to use the atomic pointer functions, the unsafe package must be imported,
so the uses of the atomic pointer functions may become invalid tomorrow.
 

>
> Ian 
>

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