[wp-trac] [WordPress Trac] #29470: Language Pack Upgrader can produce a fatal error

[WordPress Trac]

#29470: Language Pack Upgrader can produce a fatal error
-----------------------------+-----------------------------
 Reporter:  ocean90          |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Upgrade/Install  |    Version:  3.7
 Severity:  normal           |   Keywords:  has-patch
  Focuses:                   |
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 Language_Pack_Upgrader::bulk_upgrade() produces a fatal error when we
 can't create the language dir. Language_Pack_Upgrader::upgrade() is just a
 wrapper for Language_Pack_Upgrader::bulk_upgrade() and returns the first
 item from $result. That works if $result is an array or even false, but
 not if it's a WP_Error object.

 `Fatal error: Cannot use object of type WP_Error as array in /src/wp-
 admin/includes/class-wp-upgrader.php on line 1229`

 Introduced in [25633]/#22704.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29470>
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