Fix warnings on x86 (32-bit).
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index c4e3876..38f9c11 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -35,7 +35,8 @@
# if defined(MS_WIN64)
# define PRINT_TOTAL_REFS() fprintf(stderr, "[%Id refs]\n", _Py_RefTotal);
# else /* ! MS_WIN64 */
-# define PRINT_TOTAL_REFS() fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
+# define PRINT_TOTAL_REFS() fprintf(stderr, "[%ld refs]\n", \
+ Py_SAFE_DOWNCAST(_Py_RefTotal, Py_ssize_t, long));
# endif /* MS_WIN64 */
#endif