[Akonadi] [Bug 376822] empty trash or all trash on imap account akonadi doesn't continue

[Daniel Vrátil]

https://bugs.kde.org/show_bug.cgi?id=376822

Daniel Vrátil <dvratil at kde.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
                 CC|                            |dvratil at kde.org
           Priority|NOR                         |HI
             Status|UNCONFIRMED                 |CONFIRMED

--- Comment #1 from Daniel Vrátil <dvratil at kde.org> ---
ItemRetriever now uses QEventLoop to wait for request to be processed. If
Akonadi Server is shut down during that, the QEventLoop will cause
Connection::quit() to be executed, destroying the QSqlDriver and deleting the
thread. When the QEventLoop finishes and ItemRetriever::exec() returns, the
QSqlQuery() tries to dereference the already-destroyed QSqlDriver.

We need a mechanism to either prevent Connection::quit() from being executed
while an event loop is running on the Connection, or we need a way to quickly
abort ItemRetriever::exec() from Connection::quit() before destroying the SQL
connection and the thread.

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