From 2cf503d0e96b73fc10654d574720c8104acf2418 Mon Sep 17 00:00:00 2001
From: Ivailo Monev <xakepa10@laimg.moc>
Date: Sat, 23 Nov 2019 03:53:46 +0000
Subject: [PATCH] fix possible crash in QMetaType::isRegistered()

Signed-off-by: Ivailo Monev <xakepa10@laimg.moc>
---
 src/core/kernel/qmetatype.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/kernel/qmetatype.cpp b/src/core/kernel/qmetatype.cpp
index 9a4c9fdfe..d4b427617 100644
--- a/src/core/kernel/qmetatype.cpp
+++ b/src/core/kernel/qmetatype.cpp
@@ -574,10 +574,12 @@ bool QMetaType::isRegistered(int type)
     if (type >= 0 && type < User) {
         // predefined type
         return true;
+    } else if (type < 0) {
+        return false;
     }
     QReadLocker locker(customTypesLock());
     const QVector<QCustomTypeInfo> * const ct = customTypes();
-    return ((ct && ct->count() > type - User) && !ct->at(type - User).typeName.isEmpty());
+    return (ct && (ct->count() > type - User) && !ct->at(type - User).typeName.isEmpty());
 }
 
 /*!
-- 
2.11.0