From ecdccce8e468784e050b65052da193bb40e2d9b9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C4=99drzej=20Nowacki?= Date: Fri, 4 Jan 2019 13:48:56 +0100 Subject: Fix warnings about uninitialized variables MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit qtbase/src/corelib/kernel/qmetatype.cpp: In static member function ‘static void QMetaType::destroy(int, void*)’: qtbase/src/corelib/kernel/qmetatype.cpp:2599:27: error: ‘info.QMetaType::m_destructor’ may be used uninitialized in this function [-Werror=maybe-uninitialized] if (m_typedDestructor && !m_destructor) ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~ qtbase/src/corelib/kernel/qmetatype.cpp:1868:15: note: ‘info.QMetaType::m_destructor’ was declared here QMetaType info(type); ^~~~ qtbase/src/corelib/kernel/qmetatype.cpp:2600:26: error: ‘info.QMetaType::m_typedDestructor’ may be used uninitialized in this function [-Werror=maybe-uninitialized] m_typedDestructor(m_typeId, data); ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~ qtbase/src/corelib/kernel/qmetatype.cpp:1868:15: note: ‘info.QMetaType::m_typedDestructor’ was declared here QMetaType info(type); ^~~~ The extended (not inlined) function may be called on a half initialized invalid instance. Change-Id: I26d677a8ad2bd0c5846233f06393e774d377936d Reviewed-by: Liang Qi Reviewed-by: Thiago Macieira --- src/corelib/kernel/qmetatype.cpp | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/corelib/kernel/qmetatype.cpp') diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp index eb67544f21..632b86959d 100644 --- a/src/corelib/kernel/qmetatype.cpp +++ b/src/corelib/kernel/qmetatype.cpp @@ -2566,6 +2566,8 @@ void *QMetaType::createExtended(const void *copy) const */ void QMetaType::destroyExtended(void *data) const { + if (m_typeId == QMetaType::UnknownType) + return; if (Q_UNLIKELY(m_typedDestructor && !m_destructor)) m_typedDestructor(m_typeId, data); else @@ -2582,6 +2584,8 @@ void QMetaType::destroyExtended(void *data) const */ void *QMetaType::constructExtended(void *where, const void *copy) const { + if (m_typeId == QMetaType::UnknownType) + return nullptr; if (m_typedConstructor && !m_constructor) return m_typedConstructor(m_typeId, where, copy); return nullptr; @@ -2596,6 +2600,8 @@ void *QMetaType::constructExtended(void *where, const void *copy) const */ void QMetaType::destructExtended(void *data) const { + if (m_typeId == QMetaType::UnknownType) + return; if (m_typedDestructor && !m_destructor) m_typedDestructor(m_typeId, data); } -- cgit v1.2.3