Merge remote-tracking branch 'origin/5.12.0' into 5.12

Change-Id: I12f26470e01a8582d0f02f51e20d5b742bd95d6f

1 files changed, 3 insertions, 0 deletions

diff --git a/src/corelib/tools/qsharedpointer.cpp b/src/corelib/tools/qsharedpointer.cpp
index e58d3ab6bc..622b03f42d 100644
--- a/src/corelib/tools/qsharedpointer.cpp
+++ b/src/corelib/tools/qsharedpointer.cpp
@@ -1384,6 +1384,9 @@ QtSharedPointer::ExternalRefCountData *QtSharedPointer::ExternalRefCountData::ge
     x->strongref.store(-1);
     x->weakref.store(2);  // the QWeakPointer that called us plus the QObject itself
     if (!d->sharedRefcount.testAndSetRelease(0, x)) {
+        // ~ExternalRefCountData has a Q_ASSERT, so we use this trick to
+        // only execute this if Q_ASSERTs are enabled
+        Q_ASSERT((x->weakref.store(0), true));
         delete x;
         x = d->sharedRefcount.loadAcquire();
         x->weakref.ref();