Annex C (informative) Compatibility [diff]

C.5 C standard library [diff.library]

C.5.2 Modifications to definitions [diff.mods.to.definitions]

C.5.2.1 Types char16_t and char32_t [diff.char16]

The types char16_t and char32_t are distinct types rather than typedefs to existing integral types. The tokens char16_t and char32_t are keywords in this International Standard ([lex.key]). They do not appear as macro names defined in <cuchar> ([cuchar.syn]).