elts = p.parseElementList()
	}
	p.exprLev--
	rbrace := p.expect(token.RBRACE)
	return &ast.CompositeLit{typ, lbrace, elts, rbrace}
}

// checkExpr checks that x is an expression (and not a type).
func (p *parser) checkExpr(x ast.Expr) ast.Expr {
	switch t := ast.Unparen(x).(type) {
	case *ast.BadExpr:
	case *ast.Ident:
	case *ast.BasicLit:
	case *ast.FuncLit:
	case *ast.CompositeLit: