Re: [go-nuts] Re: go1.17rc2 fails to compile slice-to-array-pointer conversions if go.mod doesn't specify go directive
On Wed, Aug 11, 2021 at 6:51 PM Cuong Manh Le wrote: > > > go run -gcflags="-lang=go1.17" main.go > > > > doesn't work either. > > Because what was run: > > ``` > /Users/cuonglm/sdk/gotip/pkg/tool/darwin_arm64/compile -o $WORK/b001/_pkg_.a > -trimpath "$WORK/b001=>" -shared -lang=go1.17 -p main -lang=go1.16 -complete > -buildid iarBRwadYSTC65zcr7pK/iarBRwadYSTC65zcr7pK -dwarf=false -D > _/Users/cuonglm/t -importcfg $WORK/b001/importcfg -pack ./main.go > $WORK/b001/_gomod_.go > ``` > > Notice "-lang" is passed two times, and the later "-lang=go1.16" wins. Passing the default -lang option after the -gcflags seems like a bug, though. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAOyqgcWz8SEYRfWXUhM13XQtUnx39qQ_QzsKWFNyZpkdrWkKeg%40mail.gmail.com.
Re: [go-nuts] Re: go1.17rc2 fails to compile slice-to-array-pointer conversions if go.mod doesn't specify go directive
So, it is a bug? Or not? I'm some confused.
On Wednesday, August 11, 2021 at 9:51:55 PM UTC-4 cuong.m...@gmail.com
wrote:
> > go run -gcflags="-lang=go1.17" main.go
> >
> > doesn't work either.
>
> Because what was run:
>
> ```
> /Users/cuonglm/sdk/gotip/pkg/tool/darwin_arm64/compile -o
> $WORK/b001/_pkg_.a -trimpath "$WORK/b001=>" -shared -lang=go1.17 -p main
> -lang=go1.16 -complete -buildid iarBRwadYSTC65zcr7pK/iarBRwadYSTC65zcr7pK
> -dwarf=false -D _/Users/cuonglm/t -importcfg $WORK/b001/importcfg -pack
> ./main.go $WORK/b001/_gomod_.go
> ```
>
> Notice "-lang" is passed two times, and the later "-lang=go1.16" wins.
>
> Cuong Manh Le
> https://cuonglm.xyz
>
>
> On Thu, Aug 12, 2021 at 7:56 AM tapi...@gmail.com
> wrote:
>
>> BTW,
>>
>> go run -gcflags="-lang=go1.17" main.go
>>
>> doesn't work either.
>>
>> On Wednesday, August 11, 2021 at 10:45:05 AM UTC-4 tapi...@gmail.com
>> wrote:
>>
>>> // main.go
>>> package main
>>>
>>> func main() {
>>> var s = []int{1, 2, 3}
>>> var pa = (*[2]int)(s[1:])
>>> println(pa[1])
>>> }
>>>
>>> $ go run main.go
>>> # command-line-arguments
>>> ./main.go:6:23: cannot convert s[1:] (type []int) to type *[2]int:
>>> conversion of slices to array pointers only supported as of
>>> -lang=go1.17
>>>
>>> Is it the deliberate design? Shouldn't the lang value be the highest
>>> language version supported by the current used toolchain?
>>>
>> --
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>> "golang-nuts" group.
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>>
>>
>> .
>>
>
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Re: [go-nuts] Re: go1.17rc2 fails to compile slice-to-array-pointer conversions if go.mod doesn't specify go directive
> go run -gcflags="-lang=go1.17" main.go
>
> doesn't work either.
Because what was run:
```
/Users/cuonglm/sdk/gotip/pkg/tool/darwin_arm64/compile -o
$WORK/b001/_pkg_.a -trimpath "$WORK/b001=>" -shared -lang=go1.17 -p main
-lang=go1.16 -complete -buildid iarBRwadYSTC65zcr7pK/iarBRwadYSTC65zcr7pK
-dwarf=false -D _/Users/cuonglm/t -importcfg $WORK/b001/importcfg -pack
./main.go $WORK/b001/_gomod_.go
```
Notice "-lang" is passed two times, and the later "-lang=go1.16" wins.
Cuong Manh Le
https://cuonglm.xyz
On Thu, Aug 12, 2021 at 7:56 AM tapi...@gmail.com
wrote:
> BTW,
>
> go run -gcflags="-lang=go1.17" main.go
>
> doesn't work either.
>
> On Wednesday, August 11, 2021 at 10:45:05 AM UTC-4 tapi...@gmail.com
> wrote:
>
>> // main.go
>> package main
>>
>> func main() {
>> var s = []int{1, 2, 3}
>> var pa = (*[2]int)(s[1:])
>> println(pa[1])
>> }
>>
>> $ go run main.go
>> # command-line-arguments
>> ./main.go:6:23: cannot convert s[1:] (type []int) to type *[2]int:
>> conversion of slices to array pointers only supported as of
>> -lang=go1.17
>>
>> Is it the deliberate design? Shouldn't the lang value be the highest
>> language version supported by the current used toolchain?
>>
> --
> You received this message because you are subscribed to the Google Groups
> "golang-nuts" group.
> To unsubscribe from this group and stop receiving emails from it, send an
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>
> .
>
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[go-nuts] Re: go1.17rc2 fails to compile slice-to-array-pointer conversions if go.mod doesn't specify go directive
BTW,
go run -gcflags="-lang=go1.17" main.go
doesn't work either.
On Wednesday, August 11, 2021 at 10:45:05 AM UTC-4 tapi...@gmail.com wrote:
> // main.go
> package main
>
> func main() {
> var s = []int{1, 2, 3}
> var pa = (*[2]int)(s[1:])
> println(pa[1])
> }
>
> $ go run main.go
> # command-line-arguments
> ./main.go:6:23: cannot convert s[1:] (type []int) to type *[2]int:
> conversion of slices to array pointers only supported as of
> -lang=go1.17
>
> Is it the deliberate design? Shouldn't the lang value be the highest
> language version supported by the current used toolchain?
>
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