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How did I fix this error when run "go vet ":direct assignment to atomic value？ #21942

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luopengift opened this issue Sep 20, 2017 · 1 comment
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How did I fix this error when run "go vet ":direct assignment to atomic value？ #21942

luopengift opened this issue Sep 20, 2017 · 1 comment
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@luopengift
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Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.9 linux/amd64

Does this issue reproduce with the latest release?

YES.

What operating system and processor architecture are you using (go env)?

GOARCH="amd64"
GOBIN="/usr/local/go/bin"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/data/golang"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build249019464=/tmp/go-build"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"

What did you do?

This is a sample program,saved as myatomic.go, here is source code:

package main

import (
	"fmt"
	"sync/atomic"
)

func main() {
	var i uint64 = 0
	i = atomic.AddUint64(&i, 1)
	fmt.Println(i)
}

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.
https://play.golang.org/p/xpk5Y8iFuN

What did you expect to see?

I wish know how I fix "direct assignment to atomic value".
Thanks very much.

What did you see instead?

I run it with command:go run myatomic.go, then return 1 to me. It's ok.
BUT, when command is go vet myatomic.go, it runs error.
Here is console detail:

[root@iZm5egf7xb48axmu4z1t3fZ GoTestExample]# go run myatomic.go 
1
[root@iZm5egf7xb48axmu4z1t3fZ GoTestExample]# go vet myatomic.go 
myatomic.go:10: direct assignment to atomic value
exit status 1

Besh wishs!~
@mvdan
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mvdan commented Sep 20, 2017

For questions about Go, see https://golang.org/wiki/Questions.

@mvdan mvdan closed this as completed Sep 20, 2017
@golang golang locked and limited conversation to collaborators Sep 20, 2018
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@mvdan @luopengift @gopherbot