[wp-trac] [WordPress Trac] #33093: Upgrade from 4.2.2 produces a warning on upgrade

[WordPress Trac]

#33093: Upgrade from 4.2.2 produces a warning on upgrade
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 Reporter:  lordspace        |       Owner:  pento
     Type:  defect (bug)     |      Status:  assigned
 Priority:  normal           |   Milestone:  4.3
Component:  Upgrade/Install  |     Version:  4.2.2
 Severity:  normal           |  Resolution:
 Keywords:  needs-patch      |     Focuses:
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Comment (by kitchin):

 For the patch, I grepped all `glob(` and skipped `SimplePie/Misc.php`.
 Maybe that is an upstream or we want a warning there, don't know. Note
 (array)false = array(false). Also, as PHP says, "On some systems it is
 impossible to distinguish between empty match and an error." The `glob()`
 emulator in includes/class-ftp.php returns false or array, like PHP.

 I don't see any unit tests.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33093#comment:5>
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