# annotates pkg from std lib

godebugtester run 
contains stdout "\"fb\""
contains stdout "\"fc\""
fail contains stdout "\"fd\""

-- go.mod --
module mod1
-- main.go --
package main
import "mod1/pkg1"
func main() {
	_=pkg1.Fa()
}
-- pkg1/fa.go --
package pkg1
import "fmt"
//godebug:annotatefile:fb.go
//godebug:annotatefile:fc.go
func Fa() string{
	_=Fb()
	_=Fc()
	_=Fd()
	return fmt.Sprintf("fa")
}
-- pkg1/fb.go --
package pkg1
func Fb() string{return "fb"}
-- pkg1/fc.go --
package pkg1
func Fc() string{return "fc"}
-- pkg1/fd.go --
package pkg1
func Fd() string{return "fd"}