cmd := exec.Command("go", "run", "-ldflags=-X main.tbd"+sep+"hello -X main.overwrite"+sep+"trumped -X main.nosuchsymbol"+sep+"neverseen", "linkx.go")
	var out, errbuf bytes.Buffer
	cmd.Stdout = &out
	cmd.Stderr = &errbuf
	err := cmd.Run()
	if err != nil {
		fmt.Println(errbuf.String())
		fmt.Println(out.String())
		fmt.Println(err)
		os.Exit(1)
	}

	want := "hello\nhello\nhello\ntrumped\ntrumped\ntrumped\n"
	got := out.String()

	for _, ss := range [][2]string{
		{"", ""},
		{"123abc", "123ABC"},
		{"αβδ", "ΑΒΔ"},
		{"abc", "xyz"},
		{"abc", "XYZ"},
		{"1", "2"},
		{"hello, world!", "hello, world!"},
		{"hello, world!", "Hello, World!"},
		{"hello, world!", "HELLO, WORLD!"},
		{"hello, world!", "jello, world!"},
		{"γειά, κόσμε!", "γειά, κόσμε!"},
		{"γειά, κόσμε!", "Γειά, Κόσμε!"},
		{"γειά, κόσμε!", "ΓΕΙΆ, ΚΌΣΜΕ!"},
		{"γειά, κόσμε!", "ΛΕΙΆ, ΚΌΣΜΕ!"},

kind: Deployment
metadata:
  creationTimestamp: null
  name: hello
spec:
  replicas: 7
  selector:
    matchLabels:
      app: hello
      tier: backend
      track: stable
  strategy: {}
  template:
    metadata:
      annotations:
        istio.io/rev: default
        kubectl.kubernetes.io/default-container: hello
        kubectl.kubernetes.io/default-logs-container: hello
        prometheus.io/path: /stats/prometheus

Laura Kassovic <******@****.***> 1701107622 -0800

Laura Kassovic <******@****.***> 1701107622 -0800

Louis Jacomet <******@****.***> 1711728981 +0100

Laura Kassovic <******@****.***> 1701107622 -0800

Louis Jacomet <******@****.***> 1711728981 +0100

			fatalf("link p2.o failed but not for package main:\n%s", out)
		}

		run("go", "tool", "link", "-importcfg=importcfg", "-o", "a.out.exe", "p3."+o)
		out = run("./a.out.exe")
		if !strings.Contains(out, "hello from p1\nhello from p2\nhello from main\n") {
			fatalf("running main, incorrect output:\n%s", out)
		}

		// ensure that mistaken future round can't use these
		os.Remove("p1.o")
		os.Remove("a.out.exe")
	}

		return
	}
	switch os.Getenv("REQUEST_URI") {
	case "/immediate-disconnect":
		os.Exit(0)
	case "/no-content-type":
		fmt.Printf("Content-Length: 6\n\nHello\n")
		os.Exit(0)
	case "/empty-headers":
		fmt.Printf("\nHello")
		os.Exit(0)
	}
	Serve(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
		if req.FormValue("nil-request-body") == "1" {