cmd.Env = os.Environ()
	return cmd
}

func TestVet(t *testing.T) {
	t.Parallel()
	for _, pkg := range []string{
		"appends",
		"asm",
		"assign",
		"atomic",
		"bool",
		"buildtag",
		"cgo",
		"composite",
		"copylock",
		"deadcode",
		"directive",
		"httpresponse",
		"lostcancel",
		"method",
		"nilfunc",
		"print",
		"shift",
		"slog",
		"structtag",

}

func getCallbackTestFuncs() []cbFunc {
	if regs := runtime.SetIntArgRegs(-1); regs > 0 {
		return cbFuncsRegABI
	}
	return cbFuncs
}

type cbDLL struct {
	name      string
	buildArgs func(out, src string) []string
}

func (d *cbDLL) makeSrc(t *testing.T, path string) {
	f, err := os.Create(path)
	if err != nil {
		t.Fatalf("failed to create source file: %v", err)
	}
	defer f.Close()