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open Cabsvisit
open Cabshelper
open Logic_ptree
open Cil_types
open Cil
open Cabs
open Lexing
class visit = object
inherit nopCabsVisitor
method vstmt s =
let loc = get_statementloc s in
ChangeTo
[{ stmt_ghost = false;
stmt_node =
CODE_ANNOT(
AAssert([],
{ lexpr_node =
PLat ({ lexpr_node = PLtrue; lexpr_loc = loc},"Pre");
lexpr_loc = loc}), loc)};
s]
end
let visitor = new visit;;
Frontc.add_syntactic_transformation (Cabsvisit.visitCabsFile visitor);;
let warn_pure_exp f e =
let loc = e.eloc in
Kernel.warning ~source:(fst loc)
"[SH]: function %s, pure expression %a is dropped"
f (Printer.pp_exp) e
;;
Cabs2cil.register_ignore_pure_exp_hook warn_pure_exp;;
let warn_proto vi =
Kernel.warning ~source:(fst vi.vdecl) "[SH]: implicit declaration for prototype %a"
(Format.pp_print_string) vi.vname
;;
Cabs2cil.register_implicit_prototype_hook warn_proto
;;
let warn_conflict oldvi vi reason =
Kernel.warning
~source:(fst vi.vdecl)
"[SH]: conflict with declaration of %a at line %d: %s"
Format.pp_print_string vi.vname
(fst oldvi.vdecl).pos_lnum
reason
;;
Cabs2cil.register_incompatible_decl_hook warn_conflict;;
let warn_distinct oldvi vi =
Kernel.warning
~source:(fst vi.vdecl)
"[SH]: definition of %a does not use exactly the same prototype as \
declared on line %d"
Format.pp_print_string vi.vname
(fst oldvi.vdecl).pos_lnum
;;
Cabs2cil.register_different_decl_hook warn_distinct;;
let warn_local_func vi =
Kernel.warning ~source:(fst vi.vdecl)
"[SH]: definition of local function %a" Format.pp_print_string vi.vname
;;
Cabs2cil.register_local_func_hook warn_local_func;;
let warn_drop_effect olde e =
Kernel.warning ~source:(fst e.eloc)
"[SH]: dropping side effect in sizeof: %a is converted to %a"
Cprint.print_expression olde
Printer.pp_exp e
;;
Cabs2cil.register_ignore_side_effect_hook warn_drop_effect
let warn_cond_effect orig e =
let source = fst e.expr_loc in
Kernel.warning ~source
"[SH]: side effect of expression %a occurs in \
conditional part of expression %a. It is not always executed"
Cprint.print_expression e Cprint.print_expression orig
;;
Cabs2cil.register_conditional_side_effect_hook warn_cond_effect
let process_new_global =
let seen_vi = Cil_datatype.Varinfo.Hashtbl.create 10 in
fun vi exists ->
let source = fst vi.vdecl in
Kernel.feedback ~source
"New global node introducing identifier %s(%d)" vi.vname vi.vid;
if exists then begin
Kernel.feedback "New occurrence of existing identifier %s" vi.vname;
if not (Cil_datatype.Varinfo.Hashtbl.mem seen_vi vi) then
Kernel.fatal
"identifier %s is supposed to have been already seen, but it has \
not been processed through this hook." vi.vname;
let vi' = Cil_datatype.Varinfo.Hashtbl.find seen_vi vi in
if vi != vi' then
Kernel.fatal
"identifier %s(%d) is not shared with its previous occurrence %s(%d)"
vi.vname vi.vid vi'.vname vi'.vid
end else begin
Kernel.feedback "First occurrence of %s" vi.vname;
if Cil_datatype.Varinfo.Hashtbl.mem seen_vi vi then
Kernel.fatal
"This is supposed to be the first occurrence of %s, \
but it is already present in the table." vi.vname;
Cil_datatype.Varinfo.Hashtbl.add seen_vi vi vi
end
;;
Cabs2cil.register_new_global_hook process_new_global
|
