From 5c29b368ade10515322c1d32506c74f39769bdef Mon Sep 17 00:00:00 2001
From: Ivailo Monev <xakepa10@gmail.com>
Date: Tue, 23 Nov 2021 19:40:14 +0200
Subject: [PATCH] fix bad free in QRegion::cleanUp()

Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
---
 src/gui/painting/qregion.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gui/painting/qregion.cpp b/src/gui/painting/qregion.cpp
index 0652795f7..0441a46e3 100644
--- a/src/gui/painting/qregion.cpp
+++ b/src/gui/painting/qregion.cpp
@@ -3727,7 +3727,8 @@ void QRegion::cleanUp(QRegion::QRegionData *x)
     if (x->xrectangles)
         free(x->xrectangles);
 #endif
-    delete x;
+    if (x != &shared_empty)
+        delete x;
 }
 
 QRegion::~QRegion()