[short] skip
[gccgo] skip # gccgo has no cover tool

go test -coverpkg=coverdot1,coverdot2 coverdot2
! stderr '[^0-9]0\.0%'
! stdout '[^0-9]0\.0%'

-- coverdot1/p.go --
package coverdot1

func F() {}
-- coverdot2/p.go --
package coverdot2

import . "coverdot1"

func G() { F() }
-- coverdot2/p_test.go --
package coverdot2

import "testing"

func TestG(t *testing.T) {
	G()
}