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Date: Fri, 14 Apr 2006 13:15:00 -0000
From: Robert Dewar <dewar@adacore.com>
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To: Vladimir Prus <ghost@cs.msu.su>
CC: Eli Zaretskii <eliz@gnu.org>,  gdb@sources.redhat.com
Subject: Re: printing wchar_t*
References: <e1lsqg$aml$1@sea.gmane.org> <200604141246.58094.ghost@cs.msu.su> <uy7y81fl6.fsf@gnu.org> <200604141700.30020.ghost@cs.msu.su>
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Vladimir Prus wrote:
> On Friday 14 April 2006 16:55, Eli Zaretskii wrote:
>>> From: Vladimir Prus <ghost@cs.msu.su>
>>> Date: Fri, 14 Apr 2006 12:46:57 +0400
>>> Cc: gdb@sources.redhat.com
>>>
>>> No, I meant UTF-16 encoding (the one with surrogate pairs), and UTF-32
>>> encoding (which does exists, in the Unicode standard).
>> What software uses that?
> 
> I'd say, any software using std::wstring on Linux.
> 
>> Anyway, UTF-16 is a variable-length encoding, so wchar_t is not it.
> 
> Since C++ standard says nothing about encoding of wchar_t, specific 
> application can do anything it likes. In particular, I believe that on 
> Windows, wchar_t* is assumed to be in UTF-16 encoding.

It only makes sense to talk about UTF-16 encoding in the context
of wchar_t if wchar_t is 16-bits, otherwise, as noted above, UTF-32
is a variable length encoding, not suitable for wchar_t.