Running Staticcheck

Checking packages

The staticcheck command works much like go build or go vet do. It supports all of the same package patterns. For example, staticcheck . will check the current package, and staticcheck ./... will check all packages. For more details on specifying packages to check, see go help packages

Explaining checks

You can use staticcheck -explain <check> to get a helpful description of a check.

Every diagnostic that staticcheck reports is annotated with the identifier of the specific check that found the issue. For example, in

foo.go:1248:4: unnecessary use of fmt.Sprintf (S1039)

the check's identifier is S1039. Running staticcheck -explain S1039 will output the following:

Unnecessary use of fmt.Sprint

Calling fmt.Sprint with a single string argument is unnecessary and identical to using the string directly.

Available since
    2020.1

Online documentation
    https://staticcheck.io/docs/checks#S1039

The output includes a one-line summary, one or more paragraphs of helpful text, the first version of Staticcheck that the check appeared in, and a link to online documentation, which contains the same information as the output of staticcheck -explain.