6 Basics [basic]

6.8 Types [basic.types]

6.8.4 CV-qualifiers [basic.type.qualifier]

Table 15: Relations on const and volatile[tab:basic.type.qualifier.rel]
no cv-qualifier
<
const
no cv-qualifier
<
volatile
no cv-qualifier
<
const volatile
const
<
const volatile
volatile
<
const volatile