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55 lines
1.8 KiB
55 lines
1.8 KiB
(*
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* Copyright (c) 2016 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*)
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open! Utils
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module PvarSet = PrettyPrintable.MakePPSet(struct
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type t = Pvar.t
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let compare = Pvar.compare
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let pp_element = (Pvar.pp pe_text)
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end)
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module Domain = AbstractDomain.FiniteSet(PvarSet)
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module TransferFunctions (CFG : ProcCfg.S) = struct
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module CFG = CFG
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module Domain = Domain
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type extras = ProcData.no_extras
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let rec add_address_taken_pvars exp astate = match exp with
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| Exp.Lvar pvar ->
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Domain.add pvar astate
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| Exp.Cast (_, e) | UnOp (_, e, _) | Lfield (e, _, _) ->
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add_address_taken_pvars e astate
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| Exp.BinOp (_, e1, e2) | Lindex (e1, e2) ->
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add_address_taken_pvars e1 astate
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|> add_address_taken_pvars e2
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| Exp.Exn _
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| Exp.Closure _
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| Exp.Const (Cint _ | Cfun _ | Cstr _ | Cfloat _ | Cclass _ | Cptr_to_fld _)
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| Exp.Var _ | Exp.Sizeof _ ->
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astate
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let exec_instr astate _ _ = function
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| Sil.Store (_, Tptr _, rhs_exp, _) ->
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add_address_taken_pvars rhs_exp astate
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| Sil.Call (_, _, actuals, _, _) ->
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let add_actual_by_ref astate_acc = function
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| actual_exp, Typ.Tptr _ -> add_address_taken_pvars actual_exp astate_acc
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| _ -> astate_acc in
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IList.fold_left add_actual_by_ref astate actuals
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| Sil.Store _ | Load _ | Prune _ | Nullify _ | Abstract _ | Remove_temps _ | Stackop _
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| Declare_locals _ ->
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astate
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end
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module Analyzer =
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AbstractInterpreter.Make
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(ProcCfg.Exceptional) (Scheduler.ReversePostorder) (TransferFunctions)
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