env GO111MODULE=off

# Issue 28035: go test -c -o NUL should work.
# Issue 28549: go test -c -o /dev/null should not overwrite /dev/null when run as root.
cd x
cmp $devnull $WORK/empty.txt
go test -o=$devnull -c
! exists x.test$GOEXE
cmp $devnull $WORK/empty.txt

# Issue 12407: go build -o /dev/null should succeed.
cd ..
go build -o $devnull y
cmp $devnull $WORK/empty.txt

-- x/x_test.go --
package x_test
import (
    "testing"
)
func TestNUL(t *testing.T) {
}
-- y/y.go --
package y
func main() {}
-- $WORK/empty.txt --