Re: POSIX bind_textdomain_codeset(): some invalid codeset arguments

[Steffen Nurpmeso]

Harald van Dijk wrote in
 <9aa0b43f-c5de-1698-9f34-c725a40e6b6b@gigawatt.nl>:
 |On 12/05/2022 23:10, Steffen Nurpmeso wrote:
 |> Harald van Dijk wrote in
 |>   <bd336669-960b-1f5f-fffc-30905d4c8e82@gigawatt.nl>:
 |>|On 12/05/2022 18:19, Steffen Nurpmeso via austin-group-l at The Open
 |>|Group wrote:
 |>|> Bruno Haible wrote in
 |>|>   <4298913.vrqWZg68TM@omega>:
 |>|>|Steffen Nurpmeso wrote:
 |>|>|>  ...
 |>|>|>| [.] "UTF-7"."
 |>|>|>
 |>|>|> That is overshoot.
 |>|>|
 |>|>|No. UTF-7 is invalid here because it produces output that is not NUL
 |>|>|terminated. See:
 |>|>|
 |>|>|$ printf 'ab\0' | iconv -t UTF-7 | od -t c
 |>|>|0000000   a   b   +   A   A   A   -
 |>|>|0000007
 |>|>|
 |>|>|strlen() on such a return value makes invalid memory accesses.
 |>|>|You can convince yourself by running
 |>|>|$ OUTPUT_CHARSET=UTF-7 valgrind ls --help
 |>|>
 |>|> This is then surely bogus?  UTF-7 is a normal single byte
 |>|> character set and is to be terminated like anything else.  Nothing
 |>|> in RFC 2152 nor RFC 3501 if you want makes me think something
 |>|> else.
 |>|
 |>|RFC 2152's rules 1 and 3 only allow specifying the listed characters as
 |>|their ASCII form. All other characters, including U+0000, must be
 |>|encoded using rule 2. GNU iconv is doing what the RFC specifies here.
 |> 
 |> No really, please.  And please do not strip important content,
 |
 |I didn't think I did. You didn't read the RFC properly, I replied to 

You again strip content of follow-up RFCs.
I have implemented UTF-7, and i definitely terminate C-style
strings.

  ...
 |>   LC_ALL=C printf 'ab\0' |  iconv -f iso-8859-1 -t utf-16 | od -t c
 |>   0000000  \0  \0   a  \0   b  \0  \0  \0
 |> 
 |> Two leading NULs?
 |
 |This is not what GNU iconv prints at all, at least not on my system, 
 |which just uses the GNU version unmodified. Rather, it prints

Interesting.  Unmodified here too.  Bruno Haible contacted me in
private, i gave him all i have.

  ...
 |you may want to report this, including steps on how to get a GNU iconv 

I have given up on reporting bugs on sourceware bug tracker.
The reason is on this list i think.

I skip the rest.

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)