dir, err := os.MkdirTemp("", "testlargecall")
	if err != nil {
		t.Fatalf("could not create directory: %v", err)
	}
	defer os.RemoveAll(dir)

	if err := os.WriteFile(filepath.Join(dir, "go.mod"), []byte("module largecall"), 0644); err != nil {
		t.Fatalf("Failed to write file: %v\n", err)
	}
	main := `package main
func main() {
        x()
}

func x()
func y()
`