Comment 1:

An example:
# cat a.go
package main
import (
        "log"
        "os"
)
func main() {
        f, err := os.Open("nosuchfile.txt")
        if err != nil {
                log.Fatal(err.Error())
        }
        defer f.Close()
}
# go tool vet -v a.go
Checking file a.go
a.go:11:13: no args in Error call
go tool vet: exit status 1
#
But, strangely, works without -v
# go tool vet a.go
#
I do not know anything about vet, but quick look shows that it assumes that any "error"
function (like log.Error) must have parameters. Perhaps I am mistaken.
Alex

Status changed to Accepted.

Comment 2:

this will be easy to fix after go/types matures.

Labels changed: added priority-later, removed priority-triage.

Comment 3:

we should fix it now. err.Error() is very common.

Comment 4:

i think just a special case about Error() suffices, what's your opinion?

Comment 5:

yes, allow Error() with no arguments.

Comment 6:

This issue was closed by revision e487ea8.

Status changed to Fixed.