[issue4474] PyUnicode_FromWideChar incorrect for characters outside the BMP (unix only)

[Marc-Andre Lemburg]

Marc-Andre Lemburg <mal at egenix.com> added the comment:

On 2009-01-18 22:59, Mark Dickinson wrote:
> Mark Dickinson <dickinsm at gmail.com> added the comment:
> 
> Looks good to me.
> 
> I'm not in a position to test with 16-bit wchar_t, but I can't see why 
> anything would go wrong.  I think we can take our chances: check this in 
> and watch the buildbots for signs of trouble.
> 
> Some minor whitespace issues in the unicodeobject.c part of the patch 
> (mixing of tabs and spaces, one brace indented oddly), but those can 
> easily be taken care of before committing;  not worth regenerating the 
> patch for.
> 
> Marc-André, is it okay with you to check this in?

I'd structure the patch differently, ie. put the whole support code
into a single #ifndef Py_UNICODE_WIDE section as part of the
#ifdef HAVE_USABLE_WCHAR_T pre-processor statement.

Also note that on platforms with 16-bit wchar_t, the comparison
(0xffff < *w) will always be false, so an additional check for
(Py_UNICODE_SIZE > 2) is needed.

BTW: Please always use upper-case hex literals, or at leat don't
mix the case within the same function.

Thanks,
-- 
Marc-Andre Lemburg
eGenix.com

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