From bf2bff543c20f46271152c8eeddc0050bb61c143 Mon Sep 17 00:00:00 2001
From: Marc Mutz <marc.mutz@qt.io>
Date: Tue, 5 Apr 2022 15:41:51 +0200
Subject: [PATCH] QMetaTypeModuleHelper: prevent slicing

Disable copy and move SMFs and make the dtor protected. This requires
to restore the default ctor, which in turn also becomes protected,
because it needn't be public.

Found by clazy-copyable-polymorphic.

Pick-to: 6.3
Change-Id: Ibde8202e755f6de05cd8f9e92cf0f9cf19b4e19b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/kernel/qmetatype_p.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/corelib/kernel/qmetatype_p.h b/src/corelib/kernel/qmetatype_p.h
index 0f1bd5d7050..3dd1f535896 100644
--- a/src/corelib/kernel/qmetatype_p.h
+++ b/src/corelib/kernel/qmetatype_p.h
@@ -76,6 +76,10 @@ QT_BEGIN_NAMESPACE
 
 class QMetaTypeModuleHelper
 {
+    Q_DISABLE_COPY_MOVE(QMetaTypeModuleHelper)
+protected:
+    QMetaTypeModuleHelper() = default;
+    ~QMetaTypeModuleHelper() = default;
 public:
     static constexpr auto makePair(int from, int to) -> quint64
     {