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Posted to notifications@netbeans.apache.org by GitBox <gi...@apache.org> on 2022/05/16 08:36:40 UTC
[GitHub] [netbeans] smil2k opened a new issue, #4122: Editor deadlock and null pointer exception while parsing java file
smil2k opened a new issue, #4122:
URL: https://github.com/apache/netbeans/issues/4122
### Apache NetBeans version
Apache NetBeans 13
### What happened
Pressing ctrl-space for suggestions leaves the editor in a freezing state.
Stacktrace reveals that in case the java source cannot be parsed, then the basedocument "loses" the write lock.
### How to reproduce
I pressed ctrl-space in the attached source file.
### Did this work correctly in an earlier version?
No
### Operating System
Linux
### JDK
11.0.15+10-Ubuntu-0ubuntu0.20.04.1
### Apache NetBeans packaging
Apache NetBeans binary zip
### Anything else
Reproduced 3 times in a row.
### Are you willing to submit a pull request?
No
### Code of Conduct
Yes
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1129790340
@mbien I was not able to save the file either, only after fixing an import problem the whole thing started to work again.
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1129769539
[deadlock2.txt](https://github.com/apache/netbeans/files/8714881/deadlock2.txt)
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127578771
Ok, no worries.
I've attached the stackdump from the locked up editor, could you please check that also?
I'm more interested in the deadlock part, I got used to null pointer in javac. Code complete often fails with closures.
Somehow this null pointer could leave the document in a write enabled state.
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127513825
@mbien The most important part for me is that in this case the editor stuck, all files left unsaved.
The fact that code complete did not work is secondary.
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[GitHub] [netbeans] mbien commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
mbien commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127521787
I took the class from the dump file and could edit it in NetBeans 13. Autocompletion worked too on the few fields which can be resolved.
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[GitHub] [netbeans] mbien commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
mbien commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127565926
NPEs in javac can be caused by a lot of things. Since I can't reproduce this (not even the exceptions), the most likely explanation is lombok.
A thread dump would show if its actually a deadlock or something else (e.g an infinite loop). You could also check if its reproducible in NetBeans 14rc3 since it uses a javac library based on JDK 18 (https://lists.apache.org/thread/m56qct2ksl210rr1hpdvcgcsydxnyg9c ).
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[GitHub] [netbeans] mbien commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
mbien commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127494287
@smil2k i believe you forgot to attach the java file. If it doesn't work paste it into a code section assuming its not too big, would be great to have a small, self-contained reproducer if possible.
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127495135
[SchedClassicScheduleLoader_66.dump.txt](https://github.com/apache/netbeans/files/8699244/SchedClassicScheduleLoader_66.dump.txt)
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[GitHub] [netbeans] mbien commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
mbien commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1128383316
> Uploading deadlock2.txt…
@smil2k this link does not work.
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127391508
[messages.log](https://github.com/apache/netbeans/files/8698467/messages.log)
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127537109
[z.zip](https://github.com/apache/netbeans/files/8699502/z.zip)
This is the set of files produced by the series of null pointers.
The problem happened, when I rewrote repository to repo (so the type became available) then the "No suggestion" tooltip shown and the editor stuck.
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[GitHub] [netbeans] smil2k commented on issue #4122: Editor deadlock and null pointer exception while parsing java file
Posted by GitBox <gi...@apache.org>.
smil2k commented on issue #4122:
URL: https://github.com/apache/netbeans/issues/4122#issuecomment-1127583109
[Uploading deadlock2.txt…]()
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