[Bug fortran/123321] Namelist input of variable accessed by use association with renaming fails

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123321

--- Comment #4 from anlauf at gcc dot gnu.org ---
(In reply to Steve Kargl from comment #3)
> which then fixes the issue.  I however do not understand the only 
> logic in trans-io.cc.  The code is
> 
>   /* Build the namelist object name.  */
>   if (sym && !sym->attr.use_only && sym->attr.use_rename
>       && sym->ns->use_stmts->rename)
>     string = gfc_build_cstring_const
> (sym->ns->use_stmts->rename->local_name);
>   else
>     string = gfc_build_cstring_const (var_name);
>   string = gfc_build_addr_expr (pchar_type_node, string);
> 
> The negated sym->attr.use_only seems to short-circuit the actually
> use of a renamed symbol?

An explanation may be given by reading pr105847.