[biabduction] Do not crash when Exe_env.get_tenv fails for some procedure

Reviewed By: da319

Differential Revision: D8332903

fbshipit-source-id: 4e4ae77

infer/src/biabduction/Tabulation.ml

@@ -1106,7 +1106,15 @@ let add_missing_field_to_tenv ~missing_sigma exe_env caller_tenv callee_pname hp
   let callee_attributes = Summary.get_attributes callee_summary in
   (* if the callee is a model, then we don't have a tenv for it *)
   if not callee_attributes.ProcAttributes.is_model && add_fields then
-    let callee_tenv = Exe_env.get_tenv exe_env callee_pname in
+    let callee_tenv_opt =
+      try Some (Exe_env.get_tenv exe_env callee_pname) with _ ->
+        let source_file = callee_attributes.ProcAttributes.loc.Location.file in
+        Tenv.load source_file
+    in
+    match callee_tenv_opt with
+    | None ->
+        ()
+    | Some callee_tenv ->
         let add_field_in_hpred hpred =
           match hpred with
           | Sil.Hpointsto (_, Sil.Estruct (_, _), Exp.Sizeof {typ= {desc= Typ.Tstruct name}}) -> (