[ownership] Do not report on temporary variables.

Reviewed By: mbouaziz, ngorogiannis

Differential Revision: D8874806

fbshipit-source-id: a977f4224

infer/src/checkers/Ownership.ml

@@ -109,6 +109,7 @@ module Domain = struct
 
 
   let report_use_after_lifetime (var, _) ~use_loc ~invalidated_loc summary =
+    if Var.appears_in_source_code var then
       let message =
         F.asprintf "Variable %a is used at line %a after its lifetime ended at %a" Var.pp var
           Location.pp use_loc Location.pp invalidated_loc