False positive with var-declaration

[rliebz]

Describe the bug The var-declaration check incorrectly warns if explicitly assigning a zero value in a var declaration, even if the zero value being assigned isn't the default for a variable of that type.

To Reproduce Steps to reproduce the behavior:

1. I updated revive go install github.com/mgechev/revive@latest
2. I run it with the following flags:

revive main.go

main.go:

// Package main is a package.
package main

func main() {
    var a any = 0
    _ = a

    var b any = ""
    _ = b
}

Expected behavior I would expect no errors for var-declaration, because the zero value for a variable of type any is nil, not 0 or "".

Logs

main.go:5:14: should drop = 0 from declaration of var a; it is the zero value
main.go:8:14: should drop = "" from declaration of var b; it is the zero value

Desktop (please complete the following information):

• OS: macOS 15.1.1
• Version of Go: go version go1.23.3 darwin/arm64

Additional context N/A

[chavacava]

Hi @rliebz thanks for reporting the problem. I'll take a look

[denisvmedia]

@chavacava can you please check my PR?

[chavacava]

@chavacava can you please check my PR?

Yes, no problem but please in the future assign you the issue before start working on it.

[denisvmedia]

@chavacava yeah, sorry, missed that.