bpo-38823: Always build _ctypes with wchar_t (GH-23248)
It is no longer possible to build the _ctypes extension module without wchar_t type: remove CTYPES_UNICODE macro. Anyway, the wchar_t type is required to build Python.
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@ -0,0 +1,3 @@
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It is no longer possible to build the ``_ctypes`` extension module without
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:c:type:`wchar_t` type: remove ``CTYPES_UNICODE`` macro. Anyway, the
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:c:type:`wchar_t` type is required to build Python. Patch by Victor Stinner.
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@ -1358,7 +1358,6 @@ static PyGetSetDef CharArray_getsets[] = {
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{ NULL, NULL }
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};
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#ifdef CTYPES_UNICODE
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static PyObject *
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WCharArray_get_value(CDataObject *self, void *Py_UNUSED(ignored))
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{
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@ -1408,7 +1407,6 @@ static PyGetSetDef WCharArray_getsets[] = {
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"string value"},
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{ NULL, NULL }
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};
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#endif
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/*
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The next three functions copied from Python's typeobject.c.
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@ -1615,11 +1613,10 @@ PyCArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) {
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if (-1 == add_getset(result, CharArray_getsets))
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goto error;
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#ifdef CTYPES_UNICODE
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} else if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) {
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}
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else if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) {
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if (-1 == add_getset(result, WCharArray_getsets))
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goto error;
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#endif
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}
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return (PyObject *)result;
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@ -4654,7 +4651,6 @@ Array_subscript(PyObject *myself, PyObject *item)
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PyMem_Free(dest);
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return np;
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}
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#ifdef CTYPES_UNICODE
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if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) {
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wchar_t *ptr = (wchar_t *)self->b_ptr;
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wchar_t *dest;
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@ -4681,7 +4677,6 @@ Array_subscript(PyObject *myself, PyObject *item)
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PyMem_Free(dest);
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return np;
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}
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#endif
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np = PyList_New(slicelen);
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if (np == NULL)
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@ -5350,7 +5345,6 @@ Pointer_subscript(PyObject *myself, PyObject *item)
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PyMem_Free(dest);
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return np;
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}
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#ifdef CTYPES_UNICODE
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if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) {
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wchar_t *ptr = *(wchar_t **)self->b_ptr;
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wchar_t *dest;
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@ -5371,7 +5365,6 @@ Pointer_subscript(PyObject *myself, PyObject *item)
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PyMem_Free(dest);
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return np;
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}
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#endif
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np = PyList_New(len);
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if (np == NULL)
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@ -5653,7 +5646,7 @@ cast(void *ptr, PyObject *src, PyObject *ctype)
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return NULL;
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}
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#ifdef CTYPES_UNICODE
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static PyObject *
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wstring_at(const wchar_t *ptr, int size)
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{
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@ -5665,7 +5658,6 @@ wstring_at(const wchar_t *ptr, int size)
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ssize = wcslen(ptr);
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return PyUnicode_FromWideChar(ptr, ssize);
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}
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#endif
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static struct PyModuleDef _ctypesmodule = {
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@ -5796,9 +5788,7 @@ _ctypes_add_objects(PyObject *mod)
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MOD_ADD("_memset_addr", PyLong_FromVoidPtr(memset));
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MOD_ADD("_string_at_addr", PyLong_FromVoidPtr(string_at));
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MOD_ADD("_cast_addr", PyLong_FromVoidPtr(cast));
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#ifdef CTYPES_UNICODE
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MOD_ADD("_wstring_at_addr", PyLong_FromVoidPtr(wstring_at));
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#endif
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/* If RTLD_LOCAL is not defined (Windows!), set it to zero. */
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#if !HAVE_DECL_RTLD_LOCAL
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@ -713,7 +713,6 @@ static int ConvParam(PyObject *obj, Py_ssize_t index, struct argument *pa)
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return 0;
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}
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#ifdef CTYPES_UNICODE
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if (PyUnicode_Check(obj)) {
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pa->ffi_type = &ffi_type_pointer;
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pa->value.p = PyUnicode_AsWideCharString(obj, NULL);
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@ -726,7 +725,6 @@ static int ConvParam(PyObject *obj, Py_ssize_t index, struct argument *pa)
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}
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return 0;
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}
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#endif
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{
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_Py_IDENTIFIER(_as_parameter_);
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@ -125,13 +125,11 @@ PyCField_FromDesc(PyObject *desc, Py_ssize_t index,
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getfunc = fd->getfunc;
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setfunc = fd->setfunc;
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}
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#ifdef CTYPES_UNICODE
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if (idict->getfunc == _ctypes_get_fielddesc("u")->getfunc) {
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struct fielddesc *fd = _ctypes_get_fielddesc("U");
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getfunc = fd->getfunc;
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setfunc = fd->setfunc;
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}
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#endif
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}
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}
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@ -1137,7 +1135,6 @@ c_get(void *ptr, Py_ssize_t size)
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return PyBytes_FromStringAndSize((char *)ptr, 1);
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}
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#ifdef CTYPES_UNICODE
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/* u - a single wchar_t character */
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static PyObject *
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u_set(void *ptr, PyObject *value, Py_ssize_t size)
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@ -1232,7 +1229,6 @@ U_set(void *ptr, PyObject *value, Py_ssize_t length)
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return value;
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}
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#endif
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static PyObject *
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s_get(void *ptr, Py_ssize_t size)
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@ -1321,7 +1317,6 @@ z_get(void *ptr, Py_ssize_t size)
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}
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}
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#ifdef CTYPES_UNICODE
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static PyObject *
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Z_set(void *ptr, PyObject *value, Py_ssize_t size)
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{
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@ -1373,7 +1368,7 @@ Z_get(void *ptr, Py_ssize_t size)
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Py_RETURN_NONE;
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}
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}
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#endif
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#ifdef MS_WIN32
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static PyObject *
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@ -1507,11 +1502,9 @@ static struct fielddesc formattable[] = {
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#endif
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{ 'P', P_set, P_get, &ffi_type_pointer},
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{ 'z', z_set, z_get, &ffi_type_pointer},
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#ifdef CTYPES_UNICODE
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{ 'u', u_set, u_get, NULL}, /* ffi_type set later */
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{ 'U', U_set, U_get, &ffi_type_pointer},
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{ 'Z', Z_set, Z_get, &ffi_type_pointer},
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#endif
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#ifdef MS_WIN32
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{ 'X', BSTR_set, BSTR_get, &ffi_type_pointer},
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#endif
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@ -1544,14 +1537,12 @@ _ctypes_get_fielddesc(const char *fmt)
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if (!initialized) {
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initialized = 1;
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#ifdef CTYPES_UNICODE
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if (sizeof(wchar_t) == sizeof(short))
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_ctypes_get_fielddesc("u")->pffi_type = &ffi_type_sshort;
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else if (sizeof(wchar_t) == sizeof(int))
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_ctypes_get_fielddesc("u")->pffi_type = &ffi_type_sint;
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else if (sizeof(wchar_t) == sizeof(long))
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_ctypes_get_fielddesc("u")->pffi_type = &ffi_type_slong;
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#endif
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}
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for (; table->code; ++table) {
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@ -343,10 +343,6 @@ extern PyObject *PyExc_ArgError;
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extern char *_ctypes_conversion_encoding;
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extern char *_ctypes_conversion_errors;
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#if defined(HAVE_WCHAR_H)
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# define CTYPES_UNICODE
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#endif
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extern void _ctypes_free_closure(void *);
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extern void *_ctypes_alloc_closure(void);
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@ -538,9 +538,7 @@ PyCStructUnionType_update_stgdict(PyObject *type, PyObject *fields, int isStruct
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case FFI_TYPE_SINT16:
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case FFI_TYPE_SINT32:
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if (dict->getfunc != _ctypes_get_fielddesc("c")->getfunc
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#ifdef CTYPES_UNICODE
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&& dict->getfunc != _ctypes_get_fielddesc("u")->getfunc
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#endif
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)
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break;
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/* else fall through */
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