[Distutils] [Python-Dev] Adventures with x64, VS7 and VS8 on Windows

M.-A. Lemburg mal at egenix.com
Mon May 21 13:28:04 CEST 2007

On 2007-05-21 12:30, Kristján Valur Jónsson wrote:
>> [Py_UNICODE being #defined as "unsigned short" on Windows]
>> I'd rather make it a platform-specific definition (for platform=Windows
>> API). Correct me if I'm wrong, but isn't wchar_t also available in VS
>> 2003 (and even in VC6?). And doesn't it have the "right" definition in
>> all these compilers?
>> So +1 for setting Py_UNICODE to wchar_t on Windows.
> Yes.  Btw, in previous visual studio versions, wchar_t was not treated
> as a builtin type by default, but rather as synonymous with unsighed short.
> Now the default is that it is, and this causes some semantic differences
> and incompatibilities of the type seen.

+1 from me.

If think this is simply a bug introduced with the UCS4 patches in
Python 2.2.

unicodeobject.h already has this code:


/* Windows has a usable wchar_t type (unless we're using UCS-4) */
# if defined(MS_WIN32) && Py_UNICODE_SIZE == 2
#  define PY_UNICODE_TYPE wchar_t
# endif

# if defined(Py_UNICODE_WIDE)
# endif


But for some reason, pyconfig.h defines:

/* Define as the integral type used for Unicode representation. */
#define PY_UNICODE_TYPE unsigned short

/* Define as the size of the unicode type. */

/* Define if you have a useable wchar_t type defined in wchar.h; useable
   means wchar_t must be 16-bit unsigned type. (see
   Include/unicodeobject.h). */
#if Py_UNICODE_SIZE == 2

disabling the default settings in the unicodeobject.h.

Marc-Andre Lemburg

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