Re: [patch] fmemopen.3:

["Michael Kerrisk (man-pages)" <mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Hello Ralf,

On 08/10/2016 10:05 PM, ralfg1-hi6Y0CQ0nG0@public.gmane.org wrote:
> fmemopen(3), release 4.07 of the Linux /man-pages/ project
> The manpage suggests to use buf itself as IO-buffer:
> setbuffer(stream,buf,size);.  It seems strange at least. In versions glibc 2.24
> it also results in incorrect behavior, see
> http://stackoverflow.com/questions/38854163/using-rewind-on-a-file-opened-with-fmemopen.
> Thus I believe, the suggested code is invalid and I suggest to delete the
> corresponding sentence from the manpage. Should be cross-checked by some glibc
> developer.
> Best regards

Thanks for the patch. Rich Felker already reported this issue to me, and I've
already made the same change to the page.

Cheers,

Michael


> Ralfg1.
> -------------------------------------------------------------------------------------------------------------
> diff --git a/man3/fmemopen.3 b/man3/fmemopen.3
> index b17b6af..5836603 100644
> --- a/man3/fmemopen.3
> +++ b/man3/fmemopen.3
> @@ -137,13 +137,6 @@ Disabling buffering with the following call
>   may be useful to detect errors at the time of an output operation:
>
>       setbuf(stream, NULL);
> -
> -Alternatively, the caller can explicitly set
> -.I buf
> -as the stdio stream buffer, at the same time informing stdio
> -of the buffer's size, using:
> -
> -    setbuffer(stream, buf, size);
>   .\"
>   .\" See http://sourceware.org/bugzilla/show_bug.cgi?id=1995
>   .\" and
>


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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