return n
}

// setPos walks the top structure of x that has no position assigned
// and assigns it all to have position pos.
// When setPos encounters a syntax node with a position assigned,
// setPos does not look inside that node.
// setPos only needs to handle syntax we create in this package;
// all other syntax should have positions assigned already.
func setPos(x syntax.Node, pos syntax.Pos) {
	if x == nil {

func tcCompLit(n *ir.CompLitExpr) (res ir.Node) {
	if base.EnableTrace && base.Flag.LowerT {
		defer tracePrint("tcCompLit", n)(&res)
	}

	lno := base.Pos
	defer func() {
		base.Pos = lno
	}()

	ir.SetPos(n)

	t := n.Type()
	base.AssertfAt(t != nil, n.Pos(), "missing type in composite literal")

	switch t.Kind() {
	default:
		base.Errorf("invalid composite literal type %v", t)
		n.SetType(nil)

	if err != nil {
		ptestErr = &PackageError{
			ImportStack: stk.Copy(),
			Err:         err,
		}
		incomplete = true
		embedErr := err.(*EmbedError)
		ptestErr.setPos(p.Internal.Build.TestEmbedPatternPos[embedErr.Pattern])
	}
	stk.Pop()

	stk.Push(p.ImportPath + "_test")
	pxtestNeedsPtest := false
	var pxtestIncomplete bool
	rawXTestImports := str.StringList(p.XTestImports)