A common mistake in go language

This article is based on mac. After installing the go1.14 version, an error occurred when executing a basic go file.

Error phenomenon:

When executing the following go file, the following error is reported

# hello.go package main import "fmt" func main(){ fmt.Println("hello world") }

The operation effect is as follows:

➜ test go run hello.go # runtime/internal/atomic /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:13:6: Load redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:16:24 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:19:6: Loadp redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:22:32 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:25:6: Load64 redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:28:26 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:31:6: LoadAcq redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:34:27 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:36:6: Xadd redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:39:37 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:39:6: Xadd64 redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:42:39 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:42:6: Xadduintptr redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:45:47 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:45:6: Xchg redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:48:36 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:48:6: Xchg64 redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:51:38 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:51:6: Xchguintptr redeclared in this block previous declaration at /usr/local/go/src/runtime/internal/atomic/atomic_amd64.go:54:45 /usr/local/go/src/runtime/internal/atomic/atomic_amd64x.go:51:6: too many errors

Cause:

Due to the fact that the old version was not deleted when installing the new version, errors occurred in some associations of the installation package

Solution:

First manually delete the previously installed package, and then try again Follow

rm -rf /usr/local/go sudo tar -C /usr/local -xzf go1.14.1.darwin-amd64.tar.gz

for more related knowledge, please pay attention togo language tutorialcolumn

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