commit 60ac6ed5579f6666130fc264d3b748ee9575e3aa
author Victor Stinner <vstinner@python.org> Fri Feb 07 23:18:08 2020 +0100
committer GitHub <noreply@github.com> Fri Feb 07 23:18:08 2020 +0100
tree c21d06611bea34d88dd5922850223837fa6ae733
parent de6f38db4859f7b8fe4da4556f06c52675fff24a

bpo-39573: Use Py_SET_SIZE() function (GH-18402)

Replace direct acccess to PyVarObject.ob_size with usage of
the Py_SET_SIZE() function.

Python/marshal.c

diff --git a/Python/marshal.c b/Python/marshal.c
index 8d441a4..04a8dc5 100644
--- a/Python/marshal.c
+++ b/Python/marshal.c
@@ -813,7 +813,7 @@
     if (ob == NULL)
         return NULL;
 
-    Py_SIZE(ob) = n > 0 ? size : -size;
+    Py_SET_SIZE(ob, n > 0 ? size : -size);
 
     for (i = 0; i < size-1; i++) {
         d = 0;