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Re: [egit-dev] [jgit-dev] history view null pointer

I have pushed an EGit fix for this NPE to Gerrit targeting stable-2.0: https://git.eclipse.org/r/6210

Thanks for reporting it,
Kevin

On Wed, May 30, 2012 at 5:57 AM, Markus Duft <markus.duft@xxxxxxxxxx> wrote:
hey

i today switched to latest master jgit and egit, and i now have a very well reproducible (occurring every time i switch to the history view now) null pointer exception. the .log contains:

seems that for _some_ reason the walker is null in that case... i saw that the method is resetting that field, and immediately thought of multi-threading, so i added a synchronized to all methods of RevCommitList that set the walker. this may not be "the" fix, but it works better now (i saw no more NPEs). if this indeed is a valid fix (i doubt that ;)), tell me and i push it.

6365 !ENTRY org.eclipse.core.jobs 4 2 2012-05-30 14:45:33.743
6366 !MESSAGE An internal error occurred during: "Reading history from Git repository 'wamas5'".
6367 !STACK 0
6368 java.lang.NullPointerException
6369     at org.eclipse.jgit.revwalk.RevCommitList.fillTo(RevCommitList.java:331)
6370     at org.eclipse.egit.ui.internal.history.GenerateHistoryJob.run(GenerateHistoryJob.java:82)
6371     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
6372
6373 !ENTRY org.eclipse.core.jobs 4 2 2012-05-30 14:45:39.533
6374 !MESSAGE An internal error occurred during: "Reading history from Git repository 'wamas5'".
6375 !STACK 0
6376 java.lang.NullPointerException
6377     at org.eclipse.jgit.revwalk.RevCommitList.fillTo(RevCommitList.java:331)
6378     at org.eclipse.egit.ui.internal.history.GenerateHistoryJob.run(GenerateHistoryJob.java:82)
6379     at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

HTH in finding a fix :)

Regards,
Markus
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