t.Fatalf("got exit code %d; want 88", exitError.ExitCode())
	}
}

// start a child process without the user code explicitly starting
// with a copy of the parent's SYSTEMROOT.
// (See issue 25210.)
func TestChildCriticalEnv(t *testing.T) {
	t.Parallel()
	cmd := helperCommand(t, "echoenv", "SYSTEMROOT")

	// Explicitly remove SYSTEMROOT from the command's environment.
	var env []string
	for _, kv := range cmd.Environ() {