Please provide a test document that causes the crash, and steps to reproduce the crash.  Thanks.

Created attachment 46300 [details]
ods file

hallo kohei,

if i change the sourerange in the extend dialog of the datapilot the dialog closes und libreoffice crashes.

best regards klaus

(In reply to comment #2)
> Created an attachment (id=46300) [details]
> ods file
> 
> hallo kohei,
> 
> if i change the sourerange in the extend dialog of the datapilot the dialog
> closes und libreoffice crashes.

it only crashes if the column of the new range is empty.

> 
> best regards klaus

Reproduced.

So, a source range containing a column without a header name is invalid since 3.3, which ultimately caused the crash.

I made changes so that when you specify an invalid range it would mark it invalid.  That's better than crash.  In the future it would be nice to re-organize the dialog in order to show some nice error message explaining why the new range is invalid.

The fix is in the 3.4 branch.

http://cgit.freedesktop.org/libreoffice/calc/commit/?h=libreoffice-3-4&id=ae86fba1c98b16e0d98258d35265fd3ab50af710