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Re: [PATCH] argp: do not call _IO_fwide() if _LIBC is not defined

On Wed, Nov 28, 2018 at 11:52 AM Joseph Myers <> wrote:
> On Wed, 28 Nov 2018, Charles-Antoine Couret wrote:
> > _IO_fwide() is defined in libio.h file. This file is included only
> > when _LIBC is defined.
> >
> > So, in case of compilation of these files without _LIBC definition,
> > the compilation failed due to this unknown function.
> To confirm: is this (as it looks like) a change that is bringing in some
> conditionals from gnulib, in exactly the form in which they appear in the
> gnulib version of this code, and are there other differences between the
> two versions that would also be desirable to merge?  (The gnulib version
> is the one that is expected to be portable for use outside of glibc.
> Ideally the glibc and gnulib versions of shared code would be identical.)

I'd also point out that the portable outside-libc version might be
advised to use fwide() here, the public equivalent of _IO_fwide(),
instead of just assuming the stream is narrow-oriented.


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