if x.mode == invalid {
			return
		}

		base := derefStructPtr(x.typ)
		sel := selx.Sel.Name
		obj, index, indirect := lookupFieldOrMethod(base, false, check.pkg, sel, false)
		switch obj.(type) {
		case nil:
			check.errorf(x, MissingFieldOrMethod, invalidArg+"%s has no single field %s", base, sel)
			return
		case *Func:
			// TODO(gri) Using derefStructPtr may result in methods being found

}

func extractPodFailureReason(client kubernetes.Interface, namespace string, selector *metav1.LabelSelector) string {
	sel, err := metav1.LabelSelectorAsSelector(selector)
	if err != nil {
		return fmt.Sprintf("failed to get label selector: %v", err)
	}
	pods, err := getPods(client, namespace, sel)
	if err != nil {
		return fmt.Sprintf("failed to fetch pods: %v", err)
	}
	sort.Slice(pods, func(i, j int) bool {

		}
		buf.WriteByte('}')

	case *ast.ParenExpr:
		buf.WriteByte('(')
		WriteExpr(buf, x.X)
		buf.WriteByte(')')

	case *ast.SelectorExpr:
		WriteExpr(buf, x.X)
		buf.WriteByte('.')
		buf.WriteString(x.Sel.Name)

	case *ast.IndexExpr, *ast.IndexListExpr:
		ix := typeparams.UnpackIndexExpr(x)
		WriteExpr(buf, ix.X)
		buf.WriteByte('[')
		writeExprList(buf, ix.Indices)
		buf.WriteByte(']')

	case *ast.SliceExpr:

	}
	return t
}

// Lookdot looks up field or method n.Sel in the type t and returns the matching
// field. It transforms the op of node n to ODOTINTER or ODOTMETH, if appropriate.
// It also may add a StarExpr node to n.X as needed for access to non-pointer
// methods. If dostrcmp is 0, it matches the field/method with the exact symbol
// as n.Sel (appropriate for exported fields). If dostrcmp is 1, it matches by name

		default:
			if mt := Lookdot(n, t, 2); mt != nil && visible(mt.Sym) { // Case-insensitive lookup.
				base.Errorf("%v undefined (type %v has no field or method %v, but does have %v)", n, n.X.Type(), n.Sel, mt.Sym)
			} else {
				base.Errorf("%v undefined (type %v has no field or method %v)", n, n.X.Type(), n.Sel)
			}
		}
		n.SetType(nil)
		return n
	}

		switch fdecl.Name.Name {
		case "m":
			dm = def
			ast.Inspect(fdecl.Body, func(n ast.Node) bool {
				if call, ok := n.(*ast.CallExpr); ok {
					sel := call.Fun.(*ast.SelectorExpr)
					use := info.Uses[sel.Sel].(*Func)
					selection := info.Selections[sel]
					if selection.Kind() != MethodVal {
						t.Errorf("Selection kind = %v, want %v", selection.Kind(), MethodVal)
					}
					if selection.Obj() != use {

		var tname *types.TypeName
		switch fun := call.Fun.(type) {
		case *ast.Ident:
			tname, _ = pass.TypesInfo.Uses[fun].(*types.TypeName)
		case *ast.SelectorExpr:
			tname, _ = pass.TypesInfo.Uses[fun.Sel].(*types.TypeName)
		}
		if tname == nil {
			return
		}

		// In the conversion T(v) of a value v of type V to a target type T, we
		// look for types T0 in the type set of T and V0 in the type set of V, such

		switch fdecl.Name.Value {
		case "m":
			dm = def
			syntax.Inspect(fdecl.Body, func(n syntax.Node) bool {
				if call, ok := n.(*syntax.CallExpr); ok {
					sel := call.Fun.(*syntax.SelectorExpr)
					use := info.Uses[sel.Sel].(*Func)
					selection := info.Selections[sel]
					if selection.Kind() != MethodVal {
						t.Errorf("Selection kind = %v, want %v", selection.Kind(), MethodVal)
					}
					if selection.Obj() != use {

func TypeExpr(f *ast.File, pkg *types.Package, typ types.Type) ast.Expr {
	switch t := typ.(type) {
	case *types.Basic:
		switch t.Kind() {
		case types.UnsafePointer:
			return &ast.SelectorExpr{X: ast.NewIdent("unsafe"), Sel: ast.NewIdent("Pointer")}
		default:
			return ast.NewIdent(t.Name())
		}
	case *types.Pointer:
		x := TypeExpr(f, pkg, t.Elem())
		if x == nil {
			return nil
		}
		return &ast.UnaryExpr{
			Op: token.MUL,

	if len(args) <= firstArg {
		// Skip calls without variadic args.
		return
	}
	args = args[firstArg:]

	if firstArg == 0 {
		if sel, ok := call.Args[0].(*ast.SelectorExpr); ok {
			if x, ok := sel.X.(*ast.Ident); ok {
				if x.Name == "os" && strings.HasPrefix(sel.Sel.Name, "Std") {
					pass.ReportRangef(call, "%s does not take io.Writer but has first arg %s", fn.FullName(), analysisutil.Format(pass.Fset, call.Args[0]))