https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105501
anlauf at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2022-05-06
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed. Intel and NAG reject the testcase, too.
In F2018, the mentioned table is:
Table 6.2: Adjacent keywords where separating blanks are optional
In does neither mention TYPE IS nor CLASS IS.
However, CLASSIS (CLASS IS w/o blanks) is properly rejected.