goto Error

	case *syntax.BasicLit:
		if e.Bad {
			goto Error // error reported during parsing
		}
		switch e.Kind {
		case syntax.IntLit, syntax.FloatLit, syntax.ImagLit:
			check.langCompat(e)
			// The max. mantissa precision for untyped numeric values
			// is 512 bits, or 4048 bits for each of the two integer