Please find attached a patch for PR93484.  The original author is Steve 
Kargl. I have added the test cases.

OK for master?

running make produces the following for check-fortran gcc-8 and gcc-9 
but not master:

XPASS: gfortran.dg/typebound_call_22.f03   -O scan-tree-dump-times 
optimized "base \\(\\);" 1

What do I need to do to backport to gcc 8 and gcc 9 branches?

The changelogs:

gcc/fortran/ChangeLog

     Steven G. Kargl  <kargl@gcc.gnu.org>

     PR fortran/93484
     * match.c (gfc_match_type_spec): Replace gfc_match_init_expr with
     gfc_match_expr. Return m if m is MATCH_NO or MATCH_ERROR.

gcc/testsuite/ChangeLog

     Mark Eggleston  <mark.eggleston@codethink.com>

     PR fortran/93484
     * gfortran/pr93484_1.f90: New test.
     * gfortran/pr93484_2.f90: New test.

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