[Bug fortran/92123] [F2018/array-descriptor] Scalar allocatable/pointer with array descriptor (via bind(C)): ICE with select rank or error scalar variable with POINTER or ALLOCATABLE in procedure with BIND(C) is not yet supported

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92123

--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 47377
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47377&action=edit
gcc10-fnspec-test.patch

Just for archival purposes, here is a short gcc plugin that allows testing "fn
spec" attribute (on direct function calls only, not on indirect calls), by
registering a fn_spec attribute and remapping it to "fn spec" when finish_decl
is called.