Crash while updating QLineEdit , calling setText

[Florian Bruhin]

Hey,

On Fri, Oct 30, 2020 at 01:05:12PM +1100, Denis Ryndine wrote:
> Looks like an assert from from frame 5;  if I poke there:
> frame 5
> #5  0x00007f6c0bc4ceb1 in addNextCluster (pos=@0x7f6bf4a85ea0: 19,
> end=0, line=..., glyphCount=@0x7f6bf4a85e98: 18, current=...,
> logClusters=0x7f6bd402bc98, glyphs=..., clusterWidth=0x7f6bf4a85dcc)
>     at /devel2/source/qt5/qtbase/src/gui/text/qtextlayout.cpp:1796
> 1796     Q_ASSERT((pos == end && glyphPosition == current.num_glyphs)
> || logClusters[pos] == glyphPosition);
>
> [...]
> 
> And here I'm not sure : is my bad Python script manages to crash due
> to passing some bad argument to setText (which is just string , no
> other args ) or is the problem happening lower down in PyQt5 or Qt5
> library?

Looks like it's the same assertion than mentioned in this Qt bug:
https://bugreports.qt.io/browse/QTBUG-45077

There it's called a debug-only issue, though. Do you get the same crash
with a release build of Qt?

Florian

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