Open
Description
$ staticcheck -debug.version
staticcheck 2022.1.3 (v0.3.3)
Compiled with Go version: go1.18.4
Main module:
honnef.co/go/[email protected] (sum: h1:oDx7VAwstgpYpb3wv0oxiZlxY+foCpRAwY7Vk6XpAgA=)
Dependencies:
github.com/BurntSushi/[email protected] (sum: h1:GaI7EiDXDRfa8VshkTj7Fym7ha+y8/XxIgD2okUIjLw=)
golang.org/x/exp/[email protected] (sum: h1:qyrTQ++p1afMkO4DPEeLGq/3oTsdlvdH4vqZUBWzUKM=)
golang.org/x/[email protected] (sum: h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=)
golang.org/x/[email protected] (sum: h1:id054HUawV2/6IGm2IV8KZQjqtwAOo2CYlOToYqa0d0=)
golang.org/x/[email protected] (sum: h1:OKYpQQVE3DKSc3r3zHVzq46vq5YH7x8xpR3/k9ixmUg=)
Go version is 1.19.2 linux/amd64.
Example program:
package main
func main() {
dir := "a"
dir += "/b"
}
Staticcheck doesn't complain about that. But if I tweak it to
package main
func main() {
dir := "a"
dir = dir + "/b"
}
Then I get
x/x.go:5:2: this value of dir is never used (SA4006)
Could SA4006 better detect this case with +=?