From 1a9a5552ac7103bfea5ba37d5cea87a5452b83ab Mon Sep 17 00:00:00 2001
From: Jody Klymak <jklymak@gmail.com>
Date: Tue, 11 Sep 2018 12:00:56 -0700
Subject: [PATCH] Backport PR #12092: Update backend_qt5agg to fix PySide2 mem
 issues

---
 lib/matplotlib/backends/backend_qt5agg.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/matplotlib/backends/backend_qt5agg.py b/lib/matplotlib/backends/backend_qt5agg.py
index f0268299bad4..826156e67843 100644
--- a/lib/matplotlib/backends/backend_qt5agg.py
+++ b/lib/matplotlib/backends/backend_qt5agg.py
@@ -63,7 +63,7 @@ def paintEvent(self, e):
             qimage = QtGui.QImage(buf, w, h, QtGui.QImage.Format_ARGB32)
             # Adjust the buf reference count to work around a memory leak bug
             # in QImage under PySide on Python 3.
-            if QT_API == 'PySide' and six.PY3:
+            if QT_API in ('PySide', 'PySide2') and six.PY3:
                 ctypes.c_long.from_address(id(buf)).value = 1
             if hasattr(qimage, 'setDevicePixelRatio'):
                 # Not available on Qt4 or some older Qt5.