[Bug fortran/96255] [F2018] Implement optional type spec for index in DO CONCURRENT

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96255

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
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                 CC|                            |kargl at gcc dot gnu.org

--- Comment #1 from kargl at gcc dot gnu.org ---
This is related to PR78219.

If someone takes up the challenge, then this show accept only
standard conforming type specs.  That is, INTEGER*4 should be
rejected.  This means one should use the method introduced in
array.c(gfc_match_array_constructor) for code to match
a type spec in an array constructor.  Looks like a copy and
paste with an additional check for INTEGER.