[Bug fortran/107423] ICE in parse_spec, at fortran/parse.cc:4017

[kargl at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107423

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-10-27
             Status|UNCONFIRMED                 |NEW
           Priority|P3                          |P4
     Ever confirmed|0                           |1
           Keywords|ice-on-valid-code           |ice-on-invalid-code
                 CC|                            |kargl at gcc dot gnu.org

--- Comment #1 from kargl at gcc dot gnu.org ---
It is actually an ICE on invalid code as type-params were added in F2008 or
F2018.  This is an ICE caused by run-on errors where a NULL pointer is
dereferenced.  Fixed by

diff --git a/gcc/fortran/parse.cc b/gcc/fortran/parse.cc
index 5b13441912a..25b987c7bef 100644
--- a/gcc/fortran/parse.cc
+++ b/gcc/fortran/parse.cc
@@ -3994,7 +3994,7 @@ parse_spec (gfc_statement st)
       gfc_symbol* proc = gfc_current_ns->proc_name;
       gcc_assert (proc);

-      if (proc->result->ts.type == BT_UNKNOWN)
+      if (proc->result && proc->result->ts.type == BT_UNKNOWN)
        function_result_typed = true;
     }