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Bug 120451

Summary:	NPE at org.netbeans.lib.lexer.EmbeddedTokenList.createLexerInputOperation()
Product:	editor	Reporter:	Marek Fukala <mfukala>
Component:	Lexer	Assignee:	Miloslav Metelka <mmetelka>
Status:	RESOLVED FIXED
Severity:	blocker	CC:	jsedek, mschovanek, pjiricka, ttran
Priority:	P2	Keywords:	RANDOM
Version:	6.x
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:
Attachments:	The JSP file The NPEs

Description Marek Fukala 2007-10-30 11:50:50 UTC

1) opened attached jsp file
=> the file was not colored at all, first NPE appeared
2) typed < at the end of line 24
=> the second attached NPE appeared.

I cannot reproduce it anymore.

Comment 1 Marek Fukala 2007-10-30 11:51:32 UTC

Created attachment 51984 [details]
The JSP file

Comment 2 Marek Fukala 2007-10-30 11:51:57 UTC

Created attachment 51985 [details]
The NPEs

Comment 3 Miloslav Metelka 2007-10-31 12:04:22 UTC

Looks like the token with embedding is detached from token hierarchy. I'll fix ASAP.

Comment 4 Miloslav Metelka 2007-10-31 17:19:45 UTC

I was only able to reproduce once when I restarted the IDE and typed '<' quickly into just opened jsp source (the one
attached). But now the same scenario does not produce any error anymore even when I attempted >10 times :( It's clear
that the issue is random so I suspect that there might be a RP thread accessing the token hierarchy without appropriate
locks but I need to verify that - the issue 120052 might help with it. In the meantime I've added some better diagnostics.

/cvs/lexer/src/org/netbeans/lib/lexer/EmbeddedTokenList.java,v  <--  EmbeddedTokenList.java
new revision: 1.20; previous revision: 1.19

Comment 5 Miloslav Metelka 2007-11-04 23:47:53 UTC

Well, I've attempted to also reproduce >5 times after fix of issue 120906 (its fix could eliminate this one too but I'm
not sure) but I still can't reproduce even with a fresh userdir. Marku could you please reproduce? Otherwise I would
believe that the 120906 had eliminated this one. Thanks.

Comment 6 Miloslav Metelka 2007-11-05 09:08:18 UTC

I have re-checked the things again - I have undone locally the last part of fix of #120906 (the one after I was able to
consistently reproduce the NPE that I've attached to #120906 e.g. in lexer's JoinSectionsTest etc.) and I was then able
to consistently reproduce this problem too.
So the fix of issue 120906 should eliminate this one too.

Comment 7 Miloslav Metelka 2007-11-05 21:21:09 UTC

*** Issue 118797 has been marked as a duplicate of this issue. ***

Comment 8 Miloslav Metelka 2007-11-05 21:23:58 UTC

*** Issue 119197 has been marked as a duplicate of this issue. ***