[Bug 297858] KMail crashes when moving a folder

[A. Sala]

https://bugs.kde.org/show_bug.cgi?id=297858

--- Comment #3 from A. Sala <asala at isa.upv.es> ---
Created attachment 70826
  --> https://bugs.kde.org/attachment.cgi?id=70826&action=edit
New crash information added by DrKonqi

kmail (4.8.2) on KDE Platform 4.8.2 (4.8.2) using Qt 4.8.1

- What I was doing when the application crashed:
Under KMail 4.8.2 (from Kubuntu ppa), I was moving a "big" MailDir archive
folder (all mail from one year) to another empty folder --I wanted to change
the archive folder organization--.
Kmail crashed many times during my reorganization, once for each folder
movement, basically ... well, maybe one or two out of ten times, it didn't
crash. I hope resulting mail is not corrupt (after restarting KMail, the
operation seems to have completed successfully)...
There was no hint in the user interface that some operations were under way so
while waiting for the directories to dissapear from the old location, I
continued work in many cases ...

-- Backtrace (Reduced):
#6  size (this=0x3000310034) at
../../include/QtCore/../../src/corelib/tools/qvector.h:137
#7  QSortFilterProxyModelPrivate::proxy_to_source (this=0x19897c0,
proxy_index=...) at itemviews/qsortfilterproxymodel.cpp:370
#8  0x00007f07eb910abd in QSortFilterProxyModel::mapToSource (this=<optimized
out>, proxyIndex=<optimized out>) at itemviews/qsortfilterproxymodel.cpp:2502
#9  0x00007f07eb911d4d in
QSortFilterProxyModelPrivate::store_persistent_indexes (this=<optimized out>)
at itemviews/qsortfilterproxymodel.cpp:996
#10 0x00007f07eb912b73 in
QSortFilterProxyModelPrivate::_q_sourceLayoutAboutToBeChanged (this=0x19897c0)
at itemviews/qsortfilterproxymodel.cpp:1244

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