[Bug fortran/123253] [16 regression] rejection of valid code

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123253

--- Comment #9 from anlauf at gcc dot gnu.org ---
Created attachment 63124
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63124&action=edit
Tentative fix

This walks through an associate target chain to look for a dummy argument.
Needs regtesting.

Jürgen, can you try this patch on your code?