[wp-trac] [WordPress Trac] #64347: Fatal error when `wxr_cdata()` is called with non-string value

[WordPress Trac]

#64347: Fatal error when `wxr_cdata()` is called with non-string value
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 Reporter:  desrosj       |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  6.9.1
Component:  Export        |     Version:  6.9
 Severity:  normal        |  Resolution:
 Keywords:  has-patch     |     Focuses:
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Comment (by hbhalodia):

 Hi @swissspidy @desrosj

 Since `wp_is_valid_utf8` function is always expecting the incoming data to
 be string, we need o make sure what we send is always a string. Hence I
 have created a PR https://github.com/WordPress/wordpress-
 develop/pull/10595, which adds the soft type-safe, Since we do not know
 what can be input to `wxr_cdata` function, hence strict type check won't
 be feasible at the moment (let me know if needs to be stricter check), but
 then we need to make sure where this function is called, the param should
 passed as string, else it can throw the fatal on this function.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64347#comment:4>
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