SIZEOF_UINTPTR_T isn't defined on Windows

Author: brandtbucher

Include/internal/pycore_code.h

@@ -509,25 +509,25 @@ static inline void
 write_obj(uint16_t *p, PyObject *obj)
 {
     uintptr_t val = (uintptr_t)obj;
-#if SIZEOF_UINTPTR_T == 8
+#if SIZEOF_VOID_P == 8
     write_u64(p, val);
-#elif SIZEOF_UINTPTR_T == 4
+#elif SIZEOF_VOID_P == 4
     write_u32(p, val);
 #else
-    #error "sizeof(uintptr_t) must be 4 or 8"
+    #error "SIZEOF_VOID_P must be 4 or 8"
 #endif
 }
 
 static inline PyObject *
 read_obj(uint16_t *p)
 {
     uintptr_t val;
-#if SIZEOF_UINTPTR_T == 8
+#if SIZEOF_VOID_P == 8
     val = read_u64(p);
-#elif SIZEOF_UINTPTR_T == 4
+#elif SIZEOF_VOID_P == 4
     val = read_u32(p);
 #else
-    #error "sizeof(uintptr_t) must be 4 or 8"
+    #error "SIZEOF_VOID_P must be 4 or 8"
 #endif
     return (PyObject *)val;
 }