[wp-trac] [WordPress Trac] #62963: Fatal is_admin_bar_showing() - Call to undefined function is_user_logged_in()

[WordPress Trac]

#62963: Fatal is_admin_bar_showing() - Call to undefined function
is_user_logged_in()
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 Reporter:  kkmuffme           |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Administration     |     Version:
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
-------------------------------+------------------------------
Changes (by dd32):

 * keywords:   => reporter-feedback


Comment:

 Calling certain functions before `init` runs is not advised, and can lead
 to fatal errors like you've experienced.

 `muplugins_loaded` shouldn't be anything other than the very first plugin
 bootstrap functionality (such as adding filters), The WordPress user is
 not loaded at that time (So you can't check if a user setting is valid),
 and `shutdown` occurs after the page may be output to the browser.

 To me, it feels like the code you're running might be the problem, and
 should be delayed until `init` or later.

 Can you provide example code that shows the behaviour in a way which
 should be supported?

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Ticket URL: <https://core.trac.wordpress.org/ticket/62963#comment:1>
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