[wp-trac] [WordPress Trac] #57469: retrieve_widgets(): fatal error when a sidebar's widgets set to null (array is expected)

[WordPress Trac]

#57469: retrieve_widgets(): fatal error when a sidebar's widgets set to null (array
is expected)
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 Reporter:  kesselb                   |       Owner:  (none)
     Type:  defect (bug)              |      Status:  reopened
 Priority:  normal                    |   Milestone:
Component:  Widgets                   |     Version:  4.9
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by mtg169):

 Checking the value I shared, this happens because sidebar-1 is null:
 {{{
 s:9:\"sidebar-1\";N;
 }}}

 Why some widgets may get stored as null values is unknown, but if core
 properly handled unexpected data types in the `sidebars_widgets` option
 and converted any null value to an empty array before calling array
 functions, it would prevent fatals.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57469#comment:15>
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