[wp-trac] [WordPress Trac] #16651: Warnings on dashboard: Notice: Trying to get property of non-object in wp-includes/capabilities.php

[WordPress Trac]

#16651: Warnings on dashboard: Notice: Trying to get property of non-object in wp-
includes/capabilities.php
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 Reporter:  grandslambert      |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Warnings/Notices   |     Version:  3.1
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |
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Comment (by grandslambert):

 OK, I did a clean install of 3.1 and turned on debug mode and it does not
 happen. Went back to other install and removed all plugins, still happens.
 Then I noticed there were some comments for posts that were no longer on
 the site. Once I deleted those from the database the errors went away.
 Apparently another bug which I may not be able to track prevented these
 comments from deleting when the posts were deleted. I will look into that,
 but perhaps a check to make sure a comment is associated with a post could
 prevent these errors -though it is not likely to happen all that often.

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Ticket URL: <http://core.trac.wordpress.org/ticket/16651#comment:3>
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