[wp-trac] [WordPress Trac] #29583: The getter in WP_Error may cause an "Undefined property" notice

[WordPress Trac]

#29583: The getter in WP_Error may cause an "Undefined property" notice
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 Reporter:  bjornjohansen  |      Owner:
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  General        |    Version:  4.0
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 Since the getter doesn't check whether the requested property actually
 exists before trying to return it, it may cause an "Undefined property"
 notice.

 This happens on the update page in wp-admin if the compatibility of a
 plugin is unknown.

 Attached patch sets default return value to null and only return the value
 of the requested property if it actually is set.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29583>
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