1 files changed, 5 insertions, 3 deletions
diff --git a/src/corelib/global/qglobalstatic.h b/src/corelib/global/qglobalstatic.h
index 01e06e5234..cf96e5ae8e 100644
--- a/src/corelib/global/qglobalstatic.h
+++ b/src/corelib/global/qglobalstatic.h
@@ -57,15 +57,17 @@ enum GuardValues {
     Initializing = 1
 };
 
-template <typename QGS> struct Holder
+template <typename QGS> union Holder
 {
     using Type = typename QGS::QGS_Type;
     using PlainType = std::remove_cv_t<Type>;
 
     static constexpr bool ConstructionIsNoexcept = noexcept(QGS::innerFunction(nullptr));
-    std::aligned_union_t<1, PlainType> storage;
     static inline QBasicAtomicInteger<qint8> guard = { QtGlobalStatic::Uninitialized };
 
+    // union's sole member
+    PlainType storage;
+
     Holder() noexcept(ConstructionIsNoexcept)
     {
         QGS::innerFunction(pointer());
@@ -81,7 +83,7 @@ template <typename QGS> struct Holder
 
     PlainType *pointer() noexcept
     {
-        return reinterpret_cast<PlainType *>(&storage);
+        return &storage;
     }
 
     Q_DISABLE_COPY_MOVE(Holder)