[wp-trac] [WordPress Trac] #11694: WP should do sanity checks for paginated posts, pages and comments

[WordPress Trac]

#11694: WP should do sanity checks for paginated posts, pages and comments
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 Reporter:  Denis-de-Bernardy    |       Owner:  wonderboymusic
     Type:  defect (bug)         |      Status:  assigned
 Priority:  normal               |   Milestone:  4.4
Component:  Posts, Post Types    |     Version:  2.9
 Severity:  major                |  Resolution:
 Keywords:  has-patch 3.9-early  |     Focuses:  template
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Comment (by wonderboymusic):

 In [changeset:"34492"]:
 {{{
 #!CommitTicketReference repository="" revision="34492"
 Canonical/Rewrite: sanity check posts that are paged with `<!--
 nextpage-->`. Page numbers past the max number of pages are returning the
 last page of content and causing infinite duplicate content.

 Awesome rewrite bug: the `page` query var was being set to `'/4'` in
 `$wp`. When cast to `int`, it returns `0` (Bless you, PHP). `WP_Query`
 calls `trim( $page, '/' )` when setting its own query var. The few places
 that were checking `page` before posts were queried now have sanity
 checks, so that these changes work without flushing rewrites.

 Adds/updates unit tests.

 Props wonderboymusic, dd32.
 See #11694.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/11694#comment:33>
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