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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25744] mbrtowc with Big5-HKSCS returns 2 instead of 1
 when consuming the second byte of certain double byte characters
Date: Sun, 29 Mar 2020 16:59:57 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D25744

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |carlos at redhat dot com
   Last reconfirmed|                            |2020-03-29

--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Tom Honermann from comment #0)
> 2nd mbrtowc call:
>   result: 2 (1 expected, glibc returns 2)
>   wc: 0x00CA (0x00CA expected)

> As noted in the code comments and process output, the return value for the
> second call to mbrtowc() is unexpected.

My opinion is that this is an implementation defect in the converter which =
has
absolute control over how those return values are computed.

My worry though is that changing this now might break existing code that is=
 out
there that is using BIG5HKSCS.

If that's actually the case then we could create a distinct gconv module wi=
th
the old behaviour and release that.

--=20
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