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Re: Bug in libiconv?
- From: Corinna Vinschen <corinna-cygwin at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Wed, 26 Jan 2011 14:26:13 +0100
- Subject: Re: Bug in libiconv?
- References: <1309.192.168.6.58.1296044105.squirrel@simlinux>
- Reply-to: cygwin at cygwin dot com
On Jan 26 13:15, simrw@sim-basis.de wrote:
> > Here's what happens on Cygwin:
> >
> > $ gcc -g -o ic ic.c -liconv
> > $ ./ic
> > iconv: 138 <Invalid or incomplete multibyte or wide character>
> > in = <Liian pitkÃÂ sana>, inbuf = <ÃÂ sana>, inbytesleft = 7,
> outbytesleft = 492
> > iconv: 138 <Invalid or incomplete multibyte or wide character>
> > in = <Liian pitkÃÂ sana>, inbuf = <ÃÂ sana>, inbytesleft = 7,
> outbytesleft = 492
> > iconv: 138 <Invalid or incomplete multibyte or wide character>
> > in = <Liian pitkÃÂ sana>, inbuf = <ÃÂ sana>, inbytesleft = 7,
> outbytesleft = 492
> > in = <Liian pitkÃÂ sana>, inbuf = <>, inbytesleft = 0, outbytesleft = 480
> >
> > So, AFAICS, there are two problems:
> >
> > - Even though iconv_open has been opened explicitely with "UTF-8" as
> > input string, the conversion still depends on the current application
> > codeset. That dsoesn't make sense.
> >
> > - Even though the last parameter to iconv is defined in bytes, the
> > value of outbytesleft after the conversion is the number of remaining
> > wchar"t's, not the number of remaining bytes. That's contrary to
> > what POSIX defines, see
> > http://pubs.opengroup.org/onlinepubs/9699919799/functions/iconv.html
>
> IMHO, the count is correct.
> On Windows/Cygwin, wchar_t is 2 bytes, on Linux, 4 bytes.
> So the buffer is 512 bytes.
> In the first 3 cases, 10 input bytes were consumed so that there remains
> in the buffer (512 - 20) = 492 bytes.
> In the last case all 16 bytes are consumed so there remains in
> the buffer (512 - 32) = 480 bytes.
Yes, you're right. Quite obviously I misinterpreted the results without
realizing that the buffer is smaller under Cygwin.
Thanks,
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
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