diff options
| -rw-r--r-- | src/corelib/kernel/qmetatype.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/corelib/kernel/qmetatype.h b/src/corelib/kernel/qmetatype.h index 8af3ce9024..80bc4a48b7 100644 --- a/src/corelib/kernel/qmetatype.h +++ b/src/corelib/kernel/qmetatype.h @@ -690,10 +690,12 @@ inline int qRegisterMetaTypeStreamOperators() static int qt_metatype_id() \ { \ static QBasicAtomicInt metatype_id = Q_BASIC_ATOMIC_INITIALIZER(0); \ - if (!metatype_id.load()) \ - metatype_id.storeRelease(qRegisterMetaType< TYPE >(#TYPE, \ - reinterpret_cast< TYPE *>(quintptr(-1)))); \ - return metatype_id.loadAcquire(); \ + if (const int id = metatype_id.loadAcquire()) \ + return id; \ + const int newId = qRegisterMetaType< TYPE >(#TYPE, \ + reinterpret_cast< TYPE *>(quintptr(-1))); \ + metatype_id.storeRelease(newId); \ + return newId; \ } \ }; \ QT_END_NAMESPACE |