diff --git a/src/corelib/tools/qarraydata.h b/src/corelib/tools/qarraydata.h
index 94182a531c..a2d9901677 100644
--- a/src/corelib/tools/qarraydata.h
+++ b/src/corelib/tools/qarraydata.h
@@ -109,7 +109,11 @@ struct Q_CORE_EXPORT QArrayData
         return result;
     }
 
-    Q_REQUIRED_RESULT static QArrayData *allocate(size_t objectSize, size_t alignment,
+    Q_REQUIRED_RESULT
+#if defined(Q_CC_GNU)
+    __attribute__((__malloc__))
+#endif
+    static QArrayData *allocate(size_t objectSize, size_t alignment,
             size_t capacity, AllocationOptions options = Default) noexcept;
     Q_REQUIRED_RESULT static QArrayData *reallocateUnaligned(QArrayData *data, size_t objectSize,
             size_t newCapacity, AllocationOptions newOptions = Default) noexcept;