From c2a09242c82b07064ddd99557e7eaf98556d5170 Mon Sep 17 00:00:00 2001
From: Thiago Macieira <thiago.macieira@intel.com>
Date: Thu, 1 Apr 2021 23:27:48 -0700
Subject: [PATCH] QGenericAtomicOps: allow pointer-sized non-atomic atomics

Change-Id: Id2983978ad544ff79911fffd1671f696b8a9ca35
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
---
 src/corelib/thread/qgenericatomic.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/corelib/thread/qgenericatomic.h b/src/corelib/thread/qgenericatomic.h
index 0fa9a9a418..e9f9218644 100644
--- a/src/corelib/thread/qgenericatomic.h
+++ b/src/corelib/thread/qgenericatomic.h
@@ -53,8 +53,10 @@ QT_END_NAMESPACE
 #pragma qt_sync_stop_processing
 #endif
 
-template<int> struct QAtomicOpsSupport { enum { IsSupported = 0 }; };
-template<> struct QAtomicOpsSupport<4> { enum { IsSupported = 1 }; };
+template<int Size> struct QAtomicOpsSupport
+{
+    enum { IsSupported = (Size == sizeof(int) || Size == sizeof(qptrdiff)) };
+};
 
 template <typename T> struct QAtomicAdditiveType
 {