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Re: [PATCH]: Implement fwide (was Re: swprintf() and friends?)


On Nov  7 11:11, Howland Craig D (Craig) wrote:
> 1)  The comments in the start of the file say C99 and POSIX.1-2001.
> POSIX adds (with respect to C99) setting errno to EBADF if the stream
> argument is invalid.  However, this is not done.  So either setting
> errno should be added or the POSIX note should be deleted.  What is
> the better approach?

POSIX doesn't require fwide to return EBADF.  The actual paragraph
says:

  The fwide() function *may* fail if:

  [EBADF]    The stream argument is not a valid stream.

That's an optional error code.

> 2)  Another comment at the start of the file says "Once a stream has an
> orientation, it cannot be changed and persists until the stream is
> closed."
> Actually, C99 allows it to be changed by freopen() (end of the paragraph
> at the top of the page on page 264, which is paragraph 4 in section
> 7.19.2).  A proposed modification is:
> "Once a stream has an orientation, it cannot be changed and persists
> until the stream is closed, unless the stream is re-opened with freopen,
> which removes the orientation of the stream."

Probably a good idea.


Corinna

-- 
Corinna Vinschen
Cygwin Project Co-Leader
Red Hat


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