Details
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Bug
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Resolution: Done
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P1: Critical
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6.1.1
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Android-NDK 21.3.6528147
Clang 9.0.8 from the NDK
Targets: armv7a-linux-androideabi23, aarch64-linux-android23, i686-linux-android23
Qt 6.1.1
Host-OS: Manjaro Linux, Windows 10
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Android
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dbe34dfa0d42510b804c898b77d6fe145473c31b (qt/qtdeclarative/dev) 94063d0c01b1471554773c00c2f6dd4a916fe0ac (qt/qtdeclarative/6.2) 55a9b77788dc11bf3669ed77a91d3cb68de03b0a (qt/qtdeclarative/6.1)
Description
Running the attached minimal example on an Android device (armeabi-v7a) or Android simulator (x86) leads to an reproducible crash. The type conversion from JS array to QVariantList in main.qml:27 seems to be the origin of the crash. Sometimes the crash occurs immediately, sometimes after pressing the button. arm64-v8a is not affected.
Also notice the output on armeabi-v7a (if the crash doesn't occur immediately):
libtest_armeabi-v7a.so: list QList(QVariant(Invalid), QVariant(Invalid))
vs. arm64-v8a:
libtest_arm64-v8a.so: list QList(QVariant(QColor, QColor(ARGB 1, 0, 0.501961, 0)), QVariant(QColor, QColor(ARGB 1, 0, 0, 0)))
Tested with following build environment (default setup Qt online installer):
- Android-NDK 21.3.6528147
- Clang 9.0.8 from the NDK
- Targets: armv7a-linux-androideabi23, aarch64-linux-android23, i686-linux-android23
- Qt 6.1.1
I got this stack trace from another application (not the minimal example) but with the same cause and with Qt 6.1.1 compiled from source
int std::__ndk1::__cxx_atomic_fetch_add<int>(std::__ndk1::__cxx_atomic_base_impl<int>*, int, std::__ndk1::memory_order) atomic:1014 std::__ndk1::__atomic_base<int, true>::fetch_add(int, std::__ndk1::memory_order) atomic:1575 std::__ndk1::__atomic_base<int, true>::operator++() atomic:1612 bool QAtomicOps<int>::ref<int>(std::__ndk1::atomic<int>&) 0x00000000c4c8bc90 QBasicAtomicInteger<int>::ref() 0x00000000c4c8bc6e QVariant::QVariant(QVariant const&) 0x00000000c4dc6d4a void QtPrivate::QMovableArrayOps<QVariant>::emplace<QVariant const&>(int, QVariant const&&&) 0x00000000c4d8ae8e QVariant& QList<QVariant>::emplaceBack<QVariant const&>(QVariant const&&&) 0x00000000c4d8adc0 QList<QVariant>::append(QVariant const&) 0x00000000c4d8a642 QList<QVariant>::push_back(QVariant const&) 0x00000000c4d912d4 QtMetaContainerPrivate::QMetaSequenceForContainer<QList<QVariant> >::getAddValueFn()::'lambda'(void*, void const*, QtMetaContainerPrivate::QMetaContainerInterface::Position)::operator()(void*, void const*, QtMetaContainerPrivate::QMetaContainerInterface::Position) const 0x00000000c4d912a6 QtMetaContainerPrivate::QMetaSequenceForContainer<QList<QVariant> >::getAddValueFn()::'lambda'(void*, void const*, QtMetaContainerPrivate::QMetaContainerInterface::Position)::__invoke(void*, void const*, QtMetaContainerPrivate::QMetaContainerInterface::Position) 0x00000000c4d90b5e QMetaSequence::addValue(void*, void const*) const 0x00000000c4d52858 toVariant(QV4::ExecutionEngine*, QV4::Value const&, int, bool, QSet<QV4::Heap::Object*>*) 0x00000000c2fae546 QV4::ExecutionEngine::toVariant(QV4::Value const&, int, bool) 0x00000000c2fade36 QQmlBinding::slowWrite(QQmlPropertyData const&, QQmlPropertyData const&, QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) 0x00000000c30d9c40 GenericBinding<0>::write(QV4::Value const&, bool, QFlags<QQmlPropertyData::WriteFlag>) 0x00000000c30e639c QQmlNonbindingBinding::doUpdate(QQmlJavaScriptExpression::DeleteWatcher const&, QFlags<QQmlPropertyData::WriteFlag>, QV4::Scope&) 0x00000000c30de358 QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) 0x00000000c30d9384 QQmlBinding::setEnabled(bool, QFlags<QQmlPropertyData::WriteFlag>) 0x00000000c30da526 QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) 0x00000000c3172b52 QQmlIncubatorPrivate::incubate(QQmlInstantiationInterrupt&) 0x00000000c313d658 QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlRefPointer<QQmlContextData> const&) 0x00000000c313cfde QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) 0x00000000c30ec2ac