Bug 11169 - NRE in TaskStore.EndTaskUpdates()
Summary: NRE in TaskStore.EndTaskUpdates()
Status: RESOLVED NOT_REPRODUCIBLE
Alias: None
Product: Xamarin Studio
Classification: Desktop
Component: General ()
Version: 4.0.2
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2013-03-14 16:41 UTC by Jeffrey Stedfast
Modified: 2015-08-25 06:59 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED NOT_REPRODUCIBLE

Description Jeffrey Stedfast 2013-03-14 16:41:33 UTC
System.NullReferenceException: Object reference not set to an instance of an object
  at MonoDevelop.Ide.Tasks.TaskStore.EndTaskUpdates () [0x0002c] in /Users/builder/data/lanes/monodevelop-lion-bs1/2be11af9/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Tasks/TaskStore.cs:234 
  at MonoDevelop.Ide.Tasks.TaskStore.RemoveRange (IEnumerable`1 tasks) [0x00053] in /Users/builder/data/lanes/monodevelop-lion-bs1/2be11af9/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Tasks/TaskStore.cs:125 
  at MonoDevelop.Ide.Tasks.CommentTasksView.UpdateCommentTags (MonoDevelop.Projects.Solution wob, FilePath fileName, IEnumerable`1 tagComments) [0x00240] in /Users/builder/data/lanes/monodevelop-lion-bs1/2be11af9/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Tasks/CommentTasksView.cs:300 
  at MonoDevelop.Ide.Tasks.CommentTasksView+<LoadSolutionContents>c__AnonStorey4F.<>m__6A (System.Object ) [0x00075] in /Users/builder/data/lanes/monodevelop-lion-bs1/2be11af9/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Tasks/CommentTasksView.cs:209
Comment 1 Jeffrey Stedfast 2013-03-14 16:43:11 UTC
Happens every time I open my MonoDevelop.mdw
Comment 2 Jeffrey Stedfast 2013-03-14 16:45:44 UTC
Okay, restarting XS seems to have "fixed" it.

All I can think of is that somehow tasksRemoved was null, and so oldTasksRemoved is now null and dereferencing it for the Count > 0 check is what is throwing the NRE