// substitution table is harmless.
	mem := st.demangleType(isCast)
	return &PtrMem{Class: cl, Member: mem}
}

// compactNumber parses:
//
//	<non-negative number> _
func (st *state) compactNumber() int {
	if len(st.str) == 0 {
		st.fail("missing index")
	}
	if st.str[0] == '_' {
		st.advance(1)
		return 0
	} else if st.str[0] == 'n' {