commit 4a21e57fe55076c77b0ee454e1994ca544d09dc0
author Victor Stinner <vstinner@python.org> Wed Apr 15 02:35:41 2020 +0200
committer GitHub <noreply@github.com> Wed Apr 15 02:35:41 2020 +0200
tree 1c9ed1c1a467357a470cd37b98e20aa5b9878cf9
parent 62183b8d6d49e59c6a98bbdaa65b7ea1415abb7f

bpo-40268: Remove unused structmember.h includes (GH-19530)

If only offsetof() is needed: include stddef.h instead.

When structmember.h is used, add a comment explaining that
PyMemberDef is used.

Modules/_io/stringio.c

diff --git a/Modules/_io/stringio.c b/Modules/_io/stringio.c
index 9feb76e..e76152e 100644
--- a/Modules/_io/stringio.c
+++ b/Modules/_io/stringio.c
@@ -1,6 +1,6 @@
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
-#include "structmember.h"
+#include <stddef.h>               // offsetof()
 #include "pycore_accu.h"
 #include "pycore_object.h"
 #include "_iomodule.h"