itervar

itervar

itervar is a static analysis tool that detects references to loop iterator variable.

Features

Detect code using reference to loop iterator variable, a common mistake in Go.

https://github.com/golang/go/wiki/CommonMistakes#using-reference-to-loop-iterator-variable

Example

func forLoop() {
	var out []*int
	for i := 0; i < 3; i++ {
		fmt.Println(i)
		out = append(out, &i) // want "using reference to loop iterator variable"
	}
}

Installation

go get

GO111MODULE=off go get github.com/p1ass/itervar/cmd/itervar

Usage

go vet -vettool=`which itervar` ./...