[Cocci] Analysis for Linux source files

[elfring@users.sourceforge.net (SF Markus Elfring)]

> Again, to understand the problem, I need the .cocci file, and preferably
> the .c file as well.  Preferably a small .c file that shows the problem.

Would you like to reproduce my issue with the following SmPL filter pattern on
the source file
"https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/tree/init/calibrate.c?id=8595c539f0360477189eef91f6337ba44962f72d"?

elfring at Sonne:~/Projekte/Coccinelle/lokal/demos/pass-through> cat
list_pass-through_functions2.cocci
@initialize:python@
import sys
result = []
mark = ['"', '', '"']
delimiter = '|'

def store_positions(fun, typ, pt_param, places, data_structure = ""):
    """Add source code positions to an internal list."""
    for place in places:
        fields = []
        fields.append(fun)

        mark[1] = typ
        fields.append(''.join(mark))

        fields.append(pt_param)
        fields.append(data_structure)

        mark[1] = place.file.replace('"', '""')
        fields.append(''.join(mark))

        fields.append(place.line)
        fields.append(str(int(place.column) + 1))
        result.append(delimiter.join(fields))

@is_pass_through@
identifier pt_function, input;
type data_type;
position pos;
@@
 data_type at pos pt_function(...,data_type input,...)
 {
  <+...
  return input;
  ...+>
 }

@is_pass_through_member_candidate@
identifier pt_function, input, tag;
type data_type;
position pos;
@@
 struct tag
 {
  ...
  data_type at pos (*pt_function)(...,data_type input,...);
  ...
 }

@script:python collection1 depends on is_pass_through@
typ << is_pass_through.data_type;
fun << is_pass_through.pt_function;
pt_param << is_pass_through.input;
places << is_pass_through.pos;
@@
store_positions(fun, typ, pt_param, places)

@script:python collection2 depends on is_pass_through_member_candidate@
tag << is_pass_through_member_candidate.tag;
typ << is_pass_through_member_candidate.data_type;
fun << is_pass_through_member_candidate.pt_function;
pt_param << is_pass_through_member_candidate.input;
places << is_pass_through_member_candidate.pos;
@@
store_positions(fun, typ, pt_param, places, tag)

@finalize:python@
if result:
   result.insert(0, delimiter.join(("function", '"data type"', "parameter",
'"contained in"', '"source file"', "line", "column")))
   print("\r\n".join(result))
else:
   sys.stderr.write("No result for this analysis!\n")


Regards,
Markus