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wordpress-develop/tests
Sergey Biryukov 3da312a954 Query: Check if $wp_query is set in is_main_query().
This avoids a PHP fatal error and triggers a `_doing_it_wrong()` notice if `is_main_query()` is called too early, bringing consistency with all the other `is_*()` conditionals: `is_single()`, `is_home()`, etc.

Follow-up to [16947], [17068], [17083], [18699], [37985].

Props vdankbaar, nhadsall, johnbillion, costdev, thijsoo, teunvgisteren, timkersten655, SergeyBiryukov.
Fixes #55104.

git-svn-id: https://develop.svn.wordpress.org/trunk@53395 602fd350-edb4-49c9-b593-d223f7449a82
2022-05-14 15:08:58 +00:00
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