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authorThiago Macieira <thiago.macieira@intel.com>2013-01-18 06:39:00 (GMT)
committerThe Qt Project <gerrit-noreply@qt-project.org>2013-06-16 10:38:53 (GMT)
commit96a7596a904529b1ceabf3552aab2a280c19fbd3 (patch)
tree978252023489eb861e3b6fcdad0e7525944cf813 /src/gui/painting/qpaintengine_preview_p.h
parent14641095dbeafe155a1d1000c0f0f6ca77a70b2c (diff)
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Clear the current thread data for the main thread
This avoids crashes accessing deleted memory when creating a QObject after the last QObject had been deleted, like a qDebug() in global destructors. ==41000== Invalid read of size 4 ==41000== at 0x5F01ED5: bool QBasicAtomicOps<4>::ref<int>(int&) (qatomic_x86.h:208) ==41000== by 0x5F01309: QBasicAtomicInteger<int>::ref() (qbasicatomic.h:147) ==41000== by 0x5F24051: QThreadData::ref() (qthread.cpp:100) ==41000== by 0x614A984: QObject::QObject(QObject*) (qobject.cpp:681) ==41000== Address 0x6ee73f0 is 0 bytes inside a block of size 152 free'd ==41000== at 0x4A0736C: operator delete(void*) (vg_replace_malloc.c:480) ==41000== by 0x5F240BF: QThreadData::deref() (qthread.cpp:109) ==41000== by 0x6113F6B: QCoreApplicationData::~QCoreApplicationData() (qcoreapplication.cpp:268) The comment right above the change in qthread.cpp looks eerily similar to the problem I'm trying to fix. However, the actual change that introduced the change is not in the Qt public history, so we can't know for sure what the problem was then. Cherry-picked from qtbase/950b35cf97ad398f97883efd2a18ee97994a8a9c. Change-Id: Ic4072c15529e2ae94ea36fbd0340cf5ee61413d2 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/gui/painting/qpaintengine_preview_p.h')
0 files changed, 0 insertions, 0 deletions