The synopisis for wbuffer_convert [conversions.buffer]/2 contains

typedef typename Tr::state_type   state_type;

making state_type a synonym for (possibly) some
char_traits<x>::state_type.


However, in paragraph 9 of the same section, we have

"typedef typename Codecvt::state_type state_type;

The type shall be a synonym for Codecvt::state_type."


>From what I can see, it might be hard to implement wbuffer_convert if
the types were not both std::mbstate_t, but I cannot find a
requirement that they must be the same type.


Bo Persson



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