__declspec(align(8)) for Windows

Author: tom-pytel

Modules/arraymodule.c

@@ -42,11 +42,22 @@ struct arraydescr {
     int is_signed;
 };
 
+#ifdef _MSC_VER
+
+typedef __declspec(align(8)) struct {
+    Py_ssize_t allocated;
+    char items[];
+} arraydata;
+
+#else
+
 typedef struct {
     Py_ssize_t allocated;
     _Alignas(8) char items[];
 } arraydata;
 
+#endif
+
 typedef struct arrayobject {
     PyObject_VAR_HEAD
     arraydata *data;