MAINT: Fix METH_NOARGS function signatures (numpy#20368)

The METH_NOARGS calling convention is required to take a second PyObject* which will always be NULL.

This is a continuation of numpy#19058

numpy/core/src/multiarray/methods.c

@@ -2246,7 +2246,7 @@ array_dumps(PyArrayObject *self, PyObject *args, PyObject *kwds)
 
 
 static PyObject *
-array_sizeof(PyArrayObject *self)
+array_sizeof(PyArrayObject *self, PyObject *NPY_UNUSED(args))
 {
     /* object + dimension and strides */
     Py_ssize_t nbytes = Py_TYPE(self)->tp_basicsize +

numpy/core/src/multiarray/multiarraymodule.c

@@ -4212,7 +4212,7 @@ normalize_axis_index(PyObject *NPY_UNUSED(self),
 
 
 static PyObject *
-_reload_guard(PyObject *NPY_UNUSED(self)) {
+_reload_guard(PyObject *NPY_UNUSED(self), PyObject *NPY_UNUSED(args)) {
     static int initialized = 0;
 
 #if !defined(PYPY_VERSION)

numpy/core/src/multiarray/nditer_pywrap.c

@@ -1190,7 +1190,7 @@ npyiter_resetbasepointers(NewNpyArrayIterObject *self)
 }
 
 static PyObject *
-npyiter_reset(NewNpyArrayIterObject *self)
+npyiter_reset(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter == NULL) {
         PyErr_SetString(PyExc_ValueError,
@@ -1227,7 +1227,7 @@ npyiter_reset(NewNpyArrayIterObject *self)
  * copied.
  */
 static PyObject *
-npyiter_copy(NewNpyArrayIterObject *self)
+npyiter_copy(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     NewNpyArrayIterObject *iter;
 
@@ -1263,7 +1263,7 @@ npyiter_copy(NewNpyArrayIterObject *self)
 }
 
 static PyObject *
-npyiter_iternext(NewNpyArrayIterObject *self)
+npyiter_iternext(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter != NULL && self->iternext != NULL &&
                         !self->finished && self->iternext(self->iter)) {
@@ -1320,7 +1320,8 @@ npyiter_remove_axis(NewNpyArrayIterObject *self, PyObject *args)
 }
 
 static PyObject *
-npyiter_remove_multi_index(NewNpyArrayIterObject *self)
+npyiter_remove_multi_index(
+    NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter == NULL) {
         PyErr_SetString(PyExc_ValueError,
@@ -1345,7 +1346,8 @@ npyiter_remove_multi_index(NewNpyArrayIterObject *self)
 }
 
 static PyObject *
-npyiter_enable_external_loop(NewNpyArrayIterObject *self)
+npyiter_enable_external_loop(
+    NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter == NULL) {
         PyErr_SetString(PyExc_ValueError,
@@ -1370,7 +1372,7 @@ npyiter_enable_external_loop(NewNpyArrayIterObject *self)
 }
 
 static PyObject *
-npyiter_debug_print(NewNpyArrayIterObject *self)
+npyiter_debug_print(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter != NULL) {
         NpyIter_DebugPrint(self->iter);
@@ -2315,7 +2317,7 @@ npyiter_ass_subscript(NewNpyArrayIterObject *self, PyObject *op,
 }
 
 static PyObject *
-npyiter_enter(NewNpyArrayIterObject *self)
+npyiter_enter(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     if (self->iter == NULL) {
         PyErr_SetString(PyExc_RuntimeError, "operation on non-initialized iterator");
@@ -2326,7 +2328,7 @@ npyiter_enter(NewNpyArrayIterObject *self)
 }
 
 static PyObject *
-npyiter_close(NewNpyArrayIterObject *self)
+npyiter_close(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     NpyIter *iter = self->iter;
     int ret;
@@ -2347,7 +2349,7 @@ static PyObject *
 npyiter_exit(NewNpyArrayIterObject *self, PyObject *NPY_UNUSED(args))
 {
     /* even if called via exception handling, writeback any data */
-    return npyiter_close(self);
+    return npyiter_close(self, NULL);
 }
 
 static PyMethodDef npyiter_methods[] = {

numpy/core/src/multiarray/scalartypes.c.src

@@ -229,7 +229,7 @@ gentype_multiply(PyObject *m1, PyObject *m2)
  * #convert = Long*8, LongLong*2#
  */
 static PyObject *
-@type@_bit_count(PyObject *self)
+@type@_bit_count(PyObject *self, PyObject *NPY_UNUSED(args))
 {
     @type@ scalar = PyArrayScalar_VAL(self, @Name@);
     uint8_t count = npy_popcount@c@(scalar);
@@ -1160,7 +1160,7 @@ gentype_size_get(PyObject *NPY_UNUSED(self), void *NPY_UNUSED(ignored))
 }
 
 static PyObject *
-gentype_sizeof(PyObject *self)
+gentype_sizeof(PyObject *self, PyObject *NPY_UNUSED(args))
 {
     Py_ssize_t nbytes;
     PyObject * isz = gentype_itemsize_get(self, NULL);
@@ -1918,7 +1918,7 @@ static PyObject *
  */
 /* Heavily copied from the builtin float.as_integer_ratio */
 static PyObject *
-@name@_as_integer_ratio(PyObject *self)
+@name@_as_integer_ratio(PyObject *self, PyObject *NPY_UNUSED(args))
 {
 #if @is_half@
     npy_double val = npy_half_to_double(PyArrayScalar_VAL(self, @Name@));
@@ -1999,7 +1999,7 @@ error:
  *  #c    = f, f, , l#
  */
 static PyObject *
-@name@_is_integer(PyObject *self)
+@name@_is_integer(PyObject *self, PyObject *NPY_UNUSED(args))
 {
 #if @is_half@
     npy_double val = npy_half_to_double(PyArrayScalar_VAL(self, @Name@));
@@ -2022,7 +2022,7 @@ static PyObject *
 /**end repeat**/
 
 static PyObject *
-integer_is_integer(PyObject *self) {
+integer_is_integer(PyObject *self, PyObject *NPY_UNUSED(args)) {
     Py_RETURN_TRUE;
 }