[issue8670] c_types.c_wchar should not assume that sizeof(wchar_t) == sizeof(Py_UNICODE)

[Marc-Andre Lemburg]

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

Daniel Stutzbach wrote:
> 
> Daniel Stutzbach <daniel at stutzbachenterprises.com> added the comment:
> 
>> You can tweak the Windows pyconfig.h to use UCS4, AFAIK, if you want to
>> test drive this case.
> 
> I seem to recall seeing some other code that assumed Windows implied UCS2.  Proceed with caution. ;-)

Probably, yes. I've never tried it myself.

>> But it's probably easier to configure with "gcc -fshort-wchar" on
>> Linux :-)
> 
> libc will still be using sizeof(wchar_t) == 4, though.  Won't that cause Bad Things to happen when calling libc wide-character functions?

Sure, but this is just about testing an interface, not running
applications :-)

Here's what the GCC man-page has to say:

       -fshort-wchar
           Override the underlying type for wchar_t to be short unsigned int instead
           of the default for the target.  This option is useful for building
           programs to run under WINE.

           Warning: the -fshort-wchar switch causes GCC to generate code that is not
           binary compatible with code generated without that switch.  Use it to
           conform to a non-default application binary interface.

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