Re: [go-nuts] Re: Slices, backing array, goroutines, perhaps Considerations for Go2

[Dan Kortschak]

This is not necessarily due to races. You can have this exact situation
occurring in single threaded code. I don't think any mention of race
issues was made here.

On Sun, 2019-10-27 at 08:53 +, roger peppe wrote:
> On Sun, 27 Oct 2019, 00:04 Gert,  wrote:
> 
> > I believe it's going to be to hard to write a go vet analyser that
> > could
> > warn to detect unintended state change on a array from two
> > different
> > pointers.
> > 
> 
> Isn't that why we have the race detector?
> 
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> > .
> > 
> 
> 

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Re: [go-nuts] Re: Slices, backing array, goroutines, perhaps Considerations for Go2

[andrey mirtchovski]

>> I think it only catches concurrent access to the same address, so not sure 
>> if it catches everything.
>
>
> If two things aren't writing concurrently to the same address, what's the 
> problem?

I took that to mean 'things may be updating concurrently at different
addresses inside an array backing the same slice'. But the race
detector will flag as soon as a read is attempted by another goroutine
on any of those.

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Re: [go-nuts] Re: Slices, backing array, goroutines, perhaps Considerations for Go2

[roger peppe]

On Sun, 27 Oct 2019, 12:33 Gert,  wrote:

>
> On Sunday, October 27, 2019 at 9:54:29 AM UTC+1, rog wrote:
>>
>>
>> On Sun, 27 Oct 2019, 00:04 Gert,  wrote:
>>
>>> I believe it's going to be to hard to write a go vet analyser that could
>>> warn to detect unintended state change on a array from two different
>>> pointers.
>>>
>>
>> Isn't that why we have the race detector?
>>
>
> I think it only catches concurrent access to the same address, so not sure
> if it catches everything.
>

If two things aren't writing concurrently to the same address, what's the
problem?

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> 
> .
>

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Re: [go-nuts] Re: Slices, backing array, goroutines, perhaps Considerations for Go2

[Gert]

On Sunday, October 27, 2019 at 9:54:29 AM UTC+1, rog wrote:
>
>
> On Sun, 27 Oct 2019, 00:04 Gert, > wrote:
>
>> I believe it's going to be to hard to write a go vet analyser that could 
>> warn to detect unintended state change on a array from two different 
>> pointers.
>>
>
> Isn't that why we have the race detector?
>

I think it only catches concurrent access to the same address, so not sure 
if it catches everything.

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Re: [go-nuts] Re: [ANN] A BASIC compiler

[JuciÊ Andrade]

Today I learned a fellow programmer did just that! His name is Everton
Marques.

https://github.com/udhos/basgo

On Sat, Oct 26, 2019 at 12:33 PM Robert Engels 
wrote:

> Why not generate Go?
>
>

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Re: [go-nuts] Re: Slices, backing array, goroutines, perhaps Considerations for Go2

[roger peppe]

On Sun, 27 Oct 2019, 00:04 Gert,  wrote:

> I believe it's going to be to hard to write a go vet analyser that could
> warn to detect unintended state change on a array from two different
> pointers.
>

Isn't that why we have the race detector?

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> 
> .
>

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