http://bugs.winehq.org/show_bug.cgi?id=58203
--- Comment #4 from Bernhard Übelacker bernhardu@mailbox.org --- Created attachment 78520 --> http://bugs.winehq.org/attachment.cgi?id=78520 plsql-logging-shows-NaN_better-workaround.txt
This attachement adds some logging to the input data of flatten_bezier, and shows start and endpont coordinates are "-nan(ind)".
Based on this it contains a probably better workaround by avoiding the call to flatten_bezier in this situation. With it plsqldev.exe is able to start.