https://bugs.kde.org/show_bug.cgi?id=456767

--- Comment #13 from Igor Kushnir <igor...@gmail.com> ---
A possible workaround is to show an error message via
IUiController::postMessage() and early-return if toolView is null.

Though it would be good to know why it is null in the first place. GrepDialog
asks to create the tool view. Does this happen too early, before all areas are
loaded? Why? When I activate the "Find/Replace in Files..." action shortcut
repeatedly while launching KDevelop, I cannot reproduce this crash.

The only place that I found where the search dialog is not shown and
GrepDialog::startSearch() is called immediately (show == false is passed to
GrepViewPlugin::showDialog()), is in
kdevplatform/util/kdevplatform_shell_environment.sh => function dsearch!

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