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Bug
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Resolution: Invalid
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Not Evaluated
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None
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6.2.2
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None
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macOS
When activating a layout which has been built with layout items, but with non-contiguous indexes, qt will crash.
This issue includes a project that demonstrates the problem.
The following source code illustrates the problem
CustomWidget::CustomWidget(QWidget *parent)
: QWidget{parent}
{
QHBoxLayout * l = new QHBoxLayout(this);
l->setSpacing(0);
// BUG: Without the following line, this code crashes in Qt6.
// It does not crash in Qt5 and behaves as if there is a zero-size
// empty space (much like the following line).
// l->insertSpacing(0,0);
l->insertWidget(1, new QLabel("foo", this));
l->insertWidget(2, new QLabel("bar", this));
// this will crash
QSize s = l->sizeHint();
}
You can see that the line l->insertSpacing(0,0); is commented out. Without that line, Qt5 handles it just fine and Qt6 crashes. Uncommenting the line will fix it for both versions.