1 files changed, 2 insertions, 1 deletions
diff --git a/src/corelib/tools/qcontiguouscache.h b/src/corelib/tools/qcontiguouscache.h
index b9d04b8..ef5b238 100644
--- a/src/corelib/tools/qcontiguouscache.h
+++ b/src/corelib/tools/qcontiguouscache.h
@@ -62,7 +62,7 @@ struct Q_CORE_EXPORT QContiguousCacheData
     int start;
     int offset;
     uint sharable : 1;
-    // uint unused : 31;
+    uint reserved : 31;
 
     // total is 24 bytes (HP-UX aCC: 40 bytes)
     // the next entry is already aligned to 8 bytes
@@ -186,6 +186,7 @@ void QContiguousCache<T>::detach_helper()
     x.d->offset = d->offset;
     x.d->alloc = d->alloc;
     x.d->sharable = true;
+    x.d->reserved = 0;
 
     T *dest = x.p->array + x.d->start;
     T *src = p->array + d->start;