[wp-trac] [WordPress Trac] #31130: WP_INSTALLING causes leakage between unit tests

[WordPress Trac]

#31130: WP_INSTALLING causes leakage between unit tests
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 Reporter:  boonebgorges            |       Owner:  boonebgorges
     Type:  defect (bug)            |      Status:  assigned
 Priority:  normal                  |   Milestone:  4.4
Component:  Build/Test Tools        |     Version:
 Severity:  normal                  |  Resolution:
 Keywords:  has-patch dev-feedback  |     Focuses:
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Comment (by adamsilverstein):

 I'm seeing a fatal in load.php after [34828] if I have a `.maintenance`
 file in my wp root. This is because functions.php hasn't loaded yet when
 `wp_maintenance` is called, and PHP dies when `wp_installing` is
 undefined.

 Not certain what to do. Patch incoming that reverts this line change so no
 more fatals, yea! maybe better would be to define the function where
 `wp_maintenance` would have access to it, perhaps in load.php itself?

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Ticket URL: <https://core.trac.wordpress.org/ticket/31130#comment:23>
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