Apply fixes for python < 3.12

Author: oddbookworm

src_c/include/_pygame.h

@@ -738,3 +738,29 @@ pg_PointList_FromArrayDouble(double const *array, int arr_length)
 
     return sequence;
 }
+
+#if PY_MINOR_VERSION >= 13
+static PyObject *__cached_exception = NULL;
+
+#define CACHE_EXCEPTION __cached_exception = PyErr_GetRaisedException();
+#define RESTORE_EXCEPTION                             \
+    {                                                 \
+        PyErr_SetRaisedException(__cached_exception); \
+        __cached_exception = NULL;                    \
+    }
+
+#else
+static PyObject *__cached_type = NULL;
+static PyObject *__cached_value = NULL;
+static PyObject *__cached_traceback = NULL;
+
+#define CACHE_EXCEPTION \
+    PyErr_Fetch(&__cached_type, &__cached_value, &__cached_traceback);
+#define RESTORE_EXCEPTION                                                 \
+    {                                                                     \
+        PyErr_Restore(__cached_type, __cached_value, __cached_traceback); \
+        __cached_type = NULL;                                             \
+        __cached_value = NULL;                                            \
+        __cached_traceback = NULL;                                        \
+    }
+#endif

src_c/pixelcopy.c

@@ -815,15 +815,14 @@ surface_to_array(PyObject *self, PyObject *args, PyObject *kwds)
     if (view_p->ndim == 2) {
         if (view_kind == VIEWKIND_RGB) {
             if (_copy_mapped(view_p, surf)) {
-                PyObject *currentException = NULL;
-                if (PyErr_Occurred()) {
-                    currentException = PyErr_GetRaisedException();
+                int error_occurred = (PyErr_Occurred() != NULL);
+                if (error_occurred) {
+                    CACHE_EXCEPTION
                 }
                 pgBuffer_Release(&pg_view);
                 pgSurface_Unlock(surfobj);
-                if (currentException) {
-                    PyErr_SetRaisedException(currentException);
-                }
+                if (error_occurred)
+                    RESTORE_EXCEPTION
                 return 0;
             }
         }
@@ -1165,10 +1164,10 @@ map_array(PyObject *self, PyObject *args)
     if (is_tar_alloc) {
         pgBuffer_Release(&tar_pg_view);
     }
-    PyObject *currentException = PyErr_GetRaisedException();
+    CACHE_EXCEPTION
     PyErr_Clear();
     pgSurface_Unlock(format_surf);
-    PyErr_SetRaisedException(currentException);
+    RESTORE_EXCEPTION
     return 0;
 }