Whenever you take the address of something the compiler is going to have a hard
time with escape analysis due to aliasing. Especially with a complex function
like println with varadic args.
> On Jun 1, 2021, at 11:55 AM, 'Axel Wagner' via golang-nuts
> <golang-nuts@googlegroups.com> wrote:
>
>
> "escape" as in "the compiler's escape analysis decides to put it on the heap,
> instead of the stack". You can compile using `-gcflags=-m` to test that
> yourself.
>
>> On Tue, Jun 1, 2021 at 6:39 PM Robert Glonek <rob...@glonek.co.uk> wrote:
>> What do you mean by escape? It prints the ptr to y, like the previous prints
>> the ptr to x. Y is the same pointer throughout, as it should be.
>>
>>> On Tuesday, 1 June 2021 at 14:51:50 UTC+1 tapi...@gmail.com wrote:
>>>
>>> package main
>>>
>>> func newIntPtr(n int) *int {
>>> return &n
>>> }
>>>
>>> func main() {
>>> x := newIntPtr(3)
>>> y := newIntPtr(5)
>>> c := make(chan bool)
>>> go func() {
>>> *y++
>>> close(c)
>>> }()
>>> <-c
>>> println(*x, *y)
>>> println(&x)
>>> //println(&y) // This line makes y escape.
>>> }
>>>
>>
>> --
>> 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/5d84ba06-ec44-477d-a90e-b67dc14535fan%40googlegroups.com.
>
> --
> 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/CAEkBMfG5B1ptrRKywuU%2BHc2kedvL06XN871pCYusst8MP6sSjg%40mail.gmail.com.
--
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/B400BC99-ADCC-4001-8B78-294C6915062E%40ix.netcom.com.
