What version of Go are you using (go version)?

$ go version
go version go1.20.6 linux/amd64

Does this issue reproduce with the latest release?

Yes

What did you do?

go run the following file:

package main

func main() {
	clear(([]int)(nil))
}

What did you expect to see?

An error indicating that clear isn't defined, or that it needs Go 1.21

What did you see instead?

./foo.go:3:6: internal compiler error: panic: interface conversion: interface is nil, not ir.Node

When building a package in a module, instead of specifying a file, Go correctly reports that clear needs Go 1.21 if the Go version in go.mod is set to 1.20. However, if go.mod specifies 1.21, the same panic occurs.