From 078c4e3519deeef8014541925da057bb064eb5a8 Mon Sep 17 00:00:00 2001
From: Victor Stinner <vstinner@redhat.com>
Date: Fri, 27 Apr 2018 14:30:01 +0200
Subject: [PATCH] bpo-33041: Fix downcast warning on Windows (#6595)

Cast pointer difference from ssize_t to int: a frame is very unlikely
larger than 2 GB.
---
 Objects/frameobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 864a8f977ea..14935a2147c 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -297,7 +297,7 @@ frame_setlineno(PyFrameObject *f, PyObject* p_new_lineno)
     if (delta_iblock > 0) {
         f->f_iblock -= delta_iblock;
         PyTryBlock *b = &f->f_blockstack[f->f_iblock];
-        delta += (f->f_stacktop - f->f_valuestack) - b->b_level;
+        delta += (int)(f->f_stacktop - f->f_valuestack) - b->b_level;
         if (b->b_type == SETUP_FINALLY &&
             code[b->b_handler] == WITH_CLEANUP_START)
         {