[Bug fortran/84276] Invalid error for valid statement function

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84276

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
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           Priority|P3                          |P4
      Known to fail|                            |6.4.1, 7.3.1, 8.0