newlib: ln_langinfo: Fix a bug of time stuff.

  Previsouly, e.g. nl_langinfo(_NL_TIME_WMONT_1) returns "February"
due to the bug. Similarly, nl_langinfo(_LN_TIME_WWDAY_1) returns
"Mon". This patch fixes that.

Reviewed-by:
Signed-off-by: <takashi.yano@nifty.ne.jp>
---
 newlib/libc/locale/nl_langinfo.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
  

[PATCH] newlib: ln_langinfo: Fix a bug of time stuff.
                ^^ nl
  

Hi Takashi,

thanks for catching.  The patch is ok, just the commit message
is a bit lacking:

On Nov 23 20:17, Takashi Yano wrote:
> Previsouly, e.g. nl_langinfo(_NL_TIME_WMONT_1) returns "February"
                                _NL_TIME_WMONTH_1
> due to the bug. Similarly, nl_langinfo(_LN_TIME_WWDAY_1) returns
                                         _NL_TIME_WWDAY_1
> "Mon". This patch fixes that.

It would be nice to add a description of the actual bug, i. e., the fact
that the bug is an off-by-one pointing into the wide char month and
weekday arrays.

Also

  Fixes: d47d5b850bed3 ("Extend locale support to maintain wide char values of native strings")

Please backport to cygwin-3_4-branch as well.


Thanks,
Corinna

> 
> Reviewed-by:
> Signed-off-by: <takashi.yano@nifty.ne.jp>
> ---
>  newlib/libc/locale/nl_langinfo.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/newlib/libc/locale/nl_langinfo.c b/newlib/libc/locale/nl_langinfo.c
> index aaa1aef86..c34a7d131 100644
> --- a/newlib/libc/locale/nl_langinfo.c
> +++ b/newlib/libc/locale/nl_langinfo.c
> @@ -78,6 +78,7 @@ static struct _nl_item_t
>    _NLITEM (ctype, woutdigits[8]),
>    _NLITEM (ctype, woutdigits[9]),
>    _NLITEM (time, codeset),
> +  _NLITEM (time, wmon[0]),
>    _NLITEM (time, wmon[1]),
>    _NLITEM (time, wmon[2]),
>    _NLITEM (time, wmon[3]),
> @@ -89,7 +90,7 @@ static struct _nl_item_t
>    _NLITEM (time, wmon[9]),
>    _NLITEM (time, wmon[10]),
>    _NLITEM (time, wmon[11]),
> -  _NLITEM (time, wmon[12]),
> +  _NLITEM (time, wmonth[0]),
>    _NLITEM (time, wmonth[1]),
>    _NLITEM (time, wmonth[2]),
>    _NLITEM (time, wmonth[3]),
> @@ -101,21 +102,20 @@ static struct _nl_item_t
>    _NLITEM (time, wmonth[9]),
>    _NLITEM (time, wmonth[10]),
>    _NLITEM (time, wmonth[11]),
> -  _NLITEM (time, wmonth[12]),
> +  _NLITEM (time, wwday[0]),
>    _NLITEM (time, wwday[1]),
>    _NLITEM (time, wwday[2]),
>    _NLITEM (time, wwday[3]),
>    _NLITEM (time, wwday[4]),
>    _NLITEM (time, wwday[5]),
>    _NLITEM (time, wwday[6]),
> -  _NLITEM (time, wwday[7]),
> +  _NLITEM (time, wweekday[0]),
>    _NLITEM (time, wweekday[1]),
>    _NLITEM (time, wweekday[2]),
>    _NLITEM (time, wweekday[3]),
>    _NLITEM (time, wweekday[4]),
>    _NLITEM (time, wweekday[5]),
>    _NLITEM (time, wweekday[6]),
> -  _NLITEM (time, wweekday[7]),
>    _NLITEM (time, wX_fmt),
>    _NLITEM (time, wx_fmt),
>    _NLITEM (time, wc_fmt),
> -- 
> 2.39.0
  

Hi Corinna,

On Thu, 23 Nov 2023 16:51:58 +0100
Corinna Vinschen wrote:
> Hi Takashi,
> 
> thanks for catching.  The patch is ok, just the commit message
> is a bit lacking:
> 
> On Nov 23 20:17, Takashi Yano wrote:
> > Previsouly, e.g. nl_langinfo(_NL_TIME_WMONT_1) returns "February"
>                                 _NL_TIME_WMONTH_1
> > due to the bug. Similarly, nl_langinfo(_LN_TIME_WWDAY_1) returns
>                                          _NL_TIME_WWDAY_1
> > "Mon". This patch fixes that.
> 
> It would be nice to add a description of the actual bug, i. e., the fact
> that the bug is an off-by-one pointing into the wide char month and
> weekday arrays.
> 
> Also
> 
>   Fixes: d47d5b850bed3 ("Extend locale support to maintain wide char values of native strings")
> 
> Please backport to cygwin-3_4-branch as well.

Thanks for reviewing. Pushed.