This bug was originally marked as duplicate of bug 163995, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.
Build: NetBeans IDE 6.9 (Build 201006101454)
VM: Java HotSpot(TM) Server VM, 17.0-b16, Java(TM) SE Runtime Environment, 1.6.0_21-b06
OS: Windows XP
mpetras: Trying to use code completion for name of an exception in the "throws" declaration of a method. On the first attempt, I get the exception (error), the second time it always works.
java.lang.AssertionError: isSubtype 12
Created attachment 100828 [details]
Created attachment 109370 [details]
Integrated into 'main-golden'
User: Dusan Balek <email@example.com>
Log: Modified to prevent 'AssertionError: isSubtype 12' - see issue #188662.
This bug already has 5 duplicates
Created attachment 111130 [details]
Created attachment 113911 [details]
keeps on popping up
Created attachment 117092 [details]
Dump file as requested
Just opened ShowFailures.java and moved caret around a bit; did not make any edits.
Created attachment 117094 [details]
*** Bug 206068 has been marked as a duplicate of this bug. ***
Created attachment 118168 [details]
Dump file again
Created attachment 121918 [details]