clean up some duplicate code in Errdesc

Reviewed By: jeremydubreil

Differential Revision: D2670354

fb-gh-sync-id: d5e664f

infer/src/backend/errdesc.ml

@@ -14,9 +14,6 @@ module L = Logging
 module F = Format
 open Utils
 
-let pvar_to_string pvar =
-  Mangled.to_string (Sil.pvar_get_name pvar)
-
 (** Check whether the hpred is a |-> representing a resource in the Racquire state *)
 let hpred_is_open_resource prop = function
   | Sil.Hpointsto(e, _, _) ->
@@ -32,7 +29,7 @@ let explain_context_leak pname context_typ fieldname error_path =
 
 (** Explain a deallocate stack variable error *)
 let explain_deallocate_stack_var pvar ra =
-  let pvar_str = pvar_to_string pvar in
+  let pvar_str = Sil.pvar_to_string pvar in
   Localise.desc_deallocate_stack_variable pvar_str ra.Sil.ra_pname ra.Sil.ra_loc
 
 (** Explain a deallocate constant string error *)
@@ -186,19 +183,19 @@ let rec find_boolean_assignment node pvar true_branch : Cfg.Node.t option =
 (** Check whether the program variable is a temporary one generated by CIL *)
 let pvar_is_cil_tmp pvar =
   Sil.pvar_is_local pvar &&
-  let name = pvar_to_string pvar in
+  let name = Sil.pvar_to_string pvar in
   string_is_prefix "_tmp" name
 
 (** Check whether the program variable is a temporary one generated by EDG *)
 let pvar_is_edg_tmp pvar =
   Sil.pvar_is_local pvar &&
-  let name = pvar_to_string pvar in
+  let name = Sil.pvar_to_string pvar in
   string_is_prefix "__T" name
 
 (** Check whether the program variable is a temporary one generated by sawja *)
 let pvar_is_sawja_tmp pvar =
   Sil.pvar_is_local pvar &&
-  let name = pvar_to_string pvar in
+  let name = Sil.pvar_to_string pvar in
   string_is_prefix "$irvar" name ||
   string_is_prefix "$T" name ||
   string_is_prefix "$bc" name
@@ -208,7 +205,7 @@ let edg_native_tmp_var_name_prefix = "__temp_var_"
 (** Check whether the program variable is a temporary one generated by EDG *)
 let pvar_is_edg_tmp pvar =
   Sil.pvar_is_local pvar &&
-  let name = pvar_to_string pvar in
+  let name = Sil.pvar_to_string pvar in
   string_is_prefix edg_native_tmp_var_name_prefix name
 
 (** Check whether the program variable is a temporary generated by the front-end *)
@@ -276,11 +273,7 @@ and _exp_lv_dexp (_seen : Sil.ExpSet.t) node e : Sil.dexp option =
         if pvar_is_frontend_tmp pvar then
           begin
             match find_program_variable_assignment node pvar with
-            | None ->
+            | None -> None
-            (*
-            L.err "exp_string_lv: Cannot find assignment of %s@." (pvar_to_string pvar);
-            exit(1) *)
-                None
             | Some (node', id) ->
                 begin
                   match find_normal_variable_funcall node' id with
@@ -924,7 +917,7 @@ let explain_dereference_as_caller_expression
     find 1 formal_params in
   match find_pvar_with_exp spec_pre exp with
   | Some (pv, pvar_off) ->
-      if !verbose then L.d_strln ("pvar: " ^ (pvar_to_string pv));
+      if !verbose then L.d_strln ("pvar: " ^ (Sil.pvar_to_string pv));
       let pv_name = Sil.pvar_get_name pv in
       if Sil.pvar_is_global pv
       then
@@ -936,7 +929,7 @@ let explain_dereference_as_caller_expression
         explain_nth_function_parameter use_buckets deref_str actual_pre position pvar_off
       else
       if Prop.has_dangling_uninit_attribute spec_pre exp then
-        Localise.desc_uninitialized_dangling_pointer_deref deref_str (pvar_to_string pv) loc
+        Localise.desc_uninitialized_dangling_pointer_deref deref_str (Sil.pvar_to_string pv) loc
       else Localise.no_desc
   | None ->
       if !verbose then (L.d_str "explain_dereference_as_caller_expression "; Sil.d_exp exp; L.d_str ": cannot explain None "; L.d_ln ());
@@ -1013,7 +1006,7 @@ let explain_stack_variable_address_escape loc pvar addr_dexp_opt =
         Some "the caller via a return"
     | Some dexp -> Some (Sil.dexp_to_string dexp)
     | None -> None in
-  Localise.desc_stack_variable_address_escape (pvar_to_string pvar) addr_dexp_str loc
+  Localise.desc_stack_variable_address_escape (Sil.pvar_to_string pvar) addr_dexp_str loc
 
 (** explain unary minus applied to unsigned expression *)
 let explain_unary_minus_applied_to_unsigned_expression exp typ node loc =