Details
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Bug
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Resolution: Unresolved
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Not Evaluated
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None
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6.8.3
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None
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Windows
Description
Found this in our user crash reports on Sentry. It doesn't affect many users, but it's pretty consistent. Unfortunately, there are no much details as we can't reproduce it locally.
Unhandled exception at 0x00007FFFCB7C9525 (Qt6Gui.dll) in fdc32558-2752-4416-9a09-fd21b79427dc.dmp: 0xC0000005: Access violation writing location 0x0000000000000000.
Call stack:
Qt6Gui.dll!`anonymous-namespace'::QBidiAlgorithm::generateDirectionalRuns::__l2::<lambda_1>::operator()(int runEnd) Line 335 C++ > Qt6Gui.dll!`anonymous namespace'::QBidiAlgorithm::generateDirectionalRuns(const QVarLengthArray<`anonymous namespace'::QBidiAlgorithm::IsolatePair,64> & isolatePairs, QVarLengthArray<`anonymous namespace'::QBidiAlgorithm::DirectionalRun,64> & runs) Line 490 C++ [Inline Frame] Qt6Gui.dll!`anonymous-namespace'::QBidiAlgorithm::resolveExplicitLevels(QVarLengthArray<`anonymous namespace'::QBidiAlgorithm::DirectionalRun,64> &) Line 506 C++ Qt6Gui.dll!`anonymous namespace'::QBidiAlgorithm::process() Line 1055 C++ Qt6Gui.dll!QTextEngine::itemize() Line 1946 C++ Qt6Gui.dll!QTextLayout::beginLayout() Line 604 C++ Qt6Quick.dll!QQuickTextPrivate::setupTextLayout(double * const baseline) Line 987 C++ Qt6Quick.dll!QQuickTextPrivate::updateSize() Line 491 C++ Qt6Quick.dll!QQuickTextPrivate::updateLayout() Line 269 C++ ...
It looks like the runs array is empty, and we simply crash on nullptr access when trying to get the element at index 0.
