libio patches for glibc 2.1

[Ulrich Drepper]

Joe Buck <jbuck@Synopsys.COM> writes:

> Since on the C++ side the wide streams are a different template expansion,
> it seems that you are free to use a completely new struct for the libio/C
> side of wide streams.  

Not if I take the whole picture.  In ISO C (which we implement in
glibc using libio) a stream can be used as a normal stream and a wide
char stream if the switching using fwide() is used correctly.

-- Uli
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