Summary: Record per-location traces. Actually, that doesn't quite make sense as a location can be accessed in many ways, so associate a trace to each *edge* in the memory graph. For instance, when doing `x->f = *y`, we want to take the history of the `<val of y> --*--> ..` edge, add "assigned at location blah" to it and store this extended history to the edge `<val of x> --f--> ..`. Use this machinery to print nicer traces in `infer explore` and better error messages too (include the last assignment, like biabduction messages). Reviewed By: da319 Differential Revision: D13518668 fbshipit-source-id: 0a62fb55fmaster
Jules Villard
6 years ago
committed by
Facebook Github Bot
parent
d9978bb897
commit
4c1ee2a485
@ -0,0 +1,72 @@
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(*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! IStd
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module F = Format
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type breadcrumb =
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| VariableDeclaration of Location.t
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| Assignment of {lhs: HilExp.AccessExpression.t; location: Location.t}
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| Capture of
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{ captured_as: AccessPath.base
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; captured: HilExp.AccessExpression.t
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; location: Location.t }
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| Call of
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{ f: [`HilCall of HilInstr.call | `Model of string]
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; actuals: HilExp.t list
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; location: Location.t }
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[@@deriving compare]
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let pp_breadcrumb_no_location fmt = function
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| VariableDeclaration _ ->
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F.fprintf fmt "variable declared"
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| Capture {captured_as; captured; location= _} ->
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F.fprintf fmt "`%a` captured as `%a`" HilExp.AccessExpression.pp captured AccessPath.pp_base
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captured_as
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| Assignment {lhs; location= _} ->
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F.fprintf fmt "assigned to `%a`" HilExp.AccessExpression.pp lhs
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| Call {f; actuals; location= _} ->
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let pp_f fmt = function
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| `HilCall call ->
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F.fprintf fmt "%a" HilInstr.pp_call call
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| `Model model ->
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F.pp_print_string fmt model
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in
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F.fprintf fmt "returned from call to `%a(%a)`" pp_f f (Pp.seq ~sep:"," HilExp.pp) actuals
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let location_of_breadcrumb = function
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| VariableDeclaration location | Assignment {location} | Capture {location} | Call {location} ->
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location
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let pp_breadcrumb fmt crumb =
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F.fprintf fmt "%a at %a" pp_breadcrumb_no_location crumb Location.pp_line
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(location_of_breadcrumb crumb)
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let errlog_trace_elem_of_breadcrumb ~depth crumb =
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let location = location_of_breadcrumb crumb in
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let description = F.asprintf "%a" pp_breadcrumb_no_location crumb in
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let tags = [] in
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Errlog.make_trace_element depth location description tags
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type t = breadcrumb list [@@deriving compare]
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let pp f trace = Pp.seq ~print_env:Pp.text_break pp_breadcrumb f trace
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let make_errlog_trace ~depth trace = List.rev_map ~f:(errlog_trace_elem_of_breadcrumb ~depth) trace
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let pp_last_event f = function
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| [] ->
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()
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| crumb :: _ ->
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pp_breadcrumb f crumb ;
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(* HACK: needed by the call site *) F.pp_print_string f " "
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let pp_interesting_events f trace = pp_last_event f trace
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@ -0,0 +1,28 @@
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(*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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open! IStd
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type breadcrumb =
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| VariableDeclaration of Location.t
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| Assignment of {lhs: HilExp.AccessExpression.t; location: Location.t}
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| Capture of
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{ captured_as: AccessPath.base
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; captured: HilExp.AccessExpression.t
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; location: Location.t }
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| Call of
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{ f: [`HilCall of HilInstr.call | `Model of string]
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; actuals: HilExp.t list
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; location: Location.t }
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type t = breadcrumb list [@@deriving compare]
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val pp : Format.formatter -> t -> unit
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val make_errlog_trace : depth:int -> t -> Errlog.loc_trace
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val pp_interesting_events : Format.formatter -> t -> unit
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@ -1,35 +1,35 @@
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codetoanalyze/cpp/pulse/basics.cpp, multiple_invalidations_branch_bad, 6, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete ptr` at line 58, column 5 here,accessed `*(ptr)` here]
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codetoanalyze/cpp/pulse/basics.cpp, multiple_invalidations_loop_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete ptr` at line 68, column 7 here,accessed `ptr` here]
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codetoanalyze/cpp/pulse/closures.cpp, implicit_ref_capture_destroy_invoke_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [`s` captured by `&(f)` as `s` here,invalidated by destructor call `S_~S(s)` at line 29, column 3 here,accessed `&(f)` here]
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codetoanalyze/cpp/pulse/closures.cpp, ref_capture_destroy_invoke_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [`s` captured by `&(f)` as `s` here,invalidated by destructor call `S_~S(s)` at line 20, column 3 here,accessed `&(f)` here]
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codetoanalyze/cpp/pulse/join.cpp, invalidate_node_alias_bad, 12, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete result` at line 25, column 5 here,accessed `*(result)` here]
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_deleted_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete x` at line 112, column 3 here,accessed `x` here]
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codetoanalyze/cpp/pulse/basics.cpp, multiple_invalidations_branch_bad, 6, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete ptr` at line 58 here,accessed `*(ptr)` here]
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codetoanalyze/cpp/pulse/basics.cpp, multiple_invalidations_loop_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete ptr` at line 68 here,accessed `ptr` here]
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codetoanalyze/cpp/pulse/closures.cpp, implicit_ref_capture_destroy_invoke_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [returned from call to `S_S(&(s),&(0$?%__sil_tmpSIL_materialize_temp__n$12))`,`&(s)` captured as `s`,invalidated by destructor call `S_~S(s)` at line 29 here,accessed `&(f)` here]
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codetoanalyze/cpp/pulse/closures.cpp, ref_capture_destroy_invoke_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [returned from call to `S_S(&(s))`,`&(s)` captured as `s`,invalidated by destructor call `S_~S(s)` at line 20 here,accessed `&(f)` here]
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codetoanalyze/cpp/pulse/join.cpp, invalidate_node_alias_bad, 12, USE_AFTER_DELETE, no_bucket, ERROR, [assigned to `result`,invalidated by call to `delete result` at line 25 here,accessed `*(result)` here]
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_deleted_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(int))`,assigned to `x`,invalidated by call to `delete x` at line 112 here,accessed `x` here]
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_literal_stack_reference_bad, 0, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_stack_pointer_bad, 0, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_variable_stack_reference1_bad, 0, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_variable_stack_reference2_bad, 0, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/use_after_delete.cpp, delete_in_branch_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 57, column 5 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, delete_in_loop_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 82, column 5 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, deref_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 18, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, double_delete_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 50, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, reassign_field_of_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 37, column 3 here,accessed `s->f` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, return_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 24, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, use_in_branch_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 73, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, use_in_loop_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 102, column 3 here,accessed `s->f` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::double_destructor_bad, 5, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [invalidated by destructor call `use_after_destructor::S_~S(s)` at line 64, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing1_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete alias` at line 148, column 3 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing2_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 156, column 3 here,accessed `alias` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing3_bad, 6, USE_AFTER_DELETE, no_bucket, ERROR, [invalidated by call to `delete s` at line 165, column 3 here,accessed `alias` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::use_after_destructor_bad, 3, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [invalidated by destructor call `use_after_destructor::S_~S(s)` at line 71, column 3 here,accessed `*(s.f)` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::use_after_scope4_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [invalidated by destructor call `use_after_destructor::C_~C(c)` at line 210, column 3 here,accessed `pc->f` here]
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codetoanalyze/cpp/pulse/use_after_free.cpp, double_free_simple_bad, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidated by call to `free(x)` at line 15, column 3 here,accessed `x` here]
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codetoanalyze/cpp/pulse/use_after_free.cpp, use_after_free_simple_bad, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidated by call to `free(x)` at line 10, column 3 here,accessed `*(x)` here]
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codetoanalyze/cpp/pulse/vector.cpp, FP_init_fill_then_push_back_loop_ok, 6, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::push_back(&(vec), ..)` at line 64, column 5 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, VectorA_FP_push_back_value_field_ok, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::push_back(vec, ..)` at line 126, column 5 here,accessed `&(this->x)` here]
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codetoanalyze/cpp/pulse/vector.cpp, assign_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::assign(vec, ..)` at line 83, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, clear_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::clear(vec, ..)` at line 77, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, deref_local_vector_element_after_push_back_bad, 4, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::push_back(&(vec), ..)` at line 19, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, deref_vector_element_after_push_back_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::push_back(vec, ..)` at line 12, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, insert_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::insert(vec, ..)` at line 95, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, reserve_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::reserve(vec, ..)` at line 71, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, shrink_to_fit_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::shrink_to_fit(vec, ..)` at line 89, column 3 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_stack_pointer_bad, 1, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_variable_stack_reference1_bad, 1, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/returns.cpp, returns::return_variable_stack_reference2_bad, 1, STACK_VARIABLE_ADDRESS_ESCAPE, no_bucket, ERROR, []
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codetoanalyze/cpp/pulse/use_after_delete.cpp, delete_in_branch_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 57 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, delete_in_loop_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 82 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, deref_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 18 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, double_delete_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 50 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, reassign_field_of_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 37 here,accessed `s->f` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, return_deleted_bad, 3, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 24 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, use_in_branch_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 73 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_delete.cpp, use_in_loop_bad, 4, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(Simple))`,assigned to `s`,invalidated by call to `delete s` at line 102 here,accessed `s->f` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::double_destructor_bad, 5, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [returned from call to `use_after_destructor::S_S(&(s),1)`,invalidated by destructor call `use_after_destructor::S_~S(s)` at line 64 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing1_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(use_after_destructor::S))`,assigned to `s`,invalidated by call to `delete alias` at line 148 here,accessed `s` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing2_bad, 5, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(use_after_destructor::S))`,assigned to `s`,returned from call to `<placement new>(sizeof(use_after_destructor::S),s)`,assigned to `alias`,invalidated by call to `delete s` at line 156 here,accessed `alias` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::placement_new_aliasing3_bad, 6, USE_AFTER_DELETE, no_bucket, ERROR, [returned from call to `__new(sizeof(use_after_destructor::S))`,assigned to `s`,assigned to `alias`,invalidated by call to `delete s` at line 165 here,accessed `alias` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::use_after_destructor_bad, 3, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [returned from call to `use_after_destructor::S_S(&(s),1)`,invalidated by destructor call `use_after_destructor::S_~S(s)` at line 71 here,accessed `*(s.f)` here]
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codetoanalyze/cpp/pulse/use_after_destructor.cpp, use_after_destructor::use_after_scope4_bad, 6, USE_AFTER_DESTRUCTOR, no_bucket, ERROR, [returned from call to `use_after_destructor::C_C(&(c),3)`,invalidated by destructor call `use_after_destructor::C_~C(c)` at line 210 here,accessed `pc->f` here]
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codetoanalyze/cpp/pulse/use_after_free.cpp, double_free_simple_bad, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidated by call to `free(x)` at line 15 here,accessed `x` here]
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codetoanalyze/cpp/pulse/use_after_free.cpp, use_after_free_simple_bad, 2, USE_AFTER_FREE, no_bucket, ERROR, [invalidated by call to `free(x)` at line 10 here,accessed `*(x)` here]
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codetoanalyze/cpp/pulse/vector.cpp, FP_init_fill_then_push_back_loop_ok, 6, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(&(vec),(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::push_back(&(vec), ..)` at line 65 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, VectorA_FP_push_back_value_field_ok, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [potentially invalidated by call to `std::vector::push_back(vec, ..)` at line 127 here,accessed `&(this->x)` here]
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codetoanalyze/cpp/pulse/vector.cpp, assign_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::assign(vec, ..)` at line 84 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, clear_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::clear(vec, ..)` at line 78 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, deref_local_vector_element_after_push_back_bad, 4, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(&(vec),(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::push_back(&(vec), ..)` at line 20 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, deref_vector_element_after_push_back_bad, 4, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,assigned to `y`,potentially invalidated by call to `std::vector::push_back(vec, ..)` at line 13 here,accessed `*(y)` here]
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codetoanalyze/cpp/pulse/vector.cpp, insert_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::insert(vec, ..)` at line 96 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, reserve_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::reserve(vec, ..)` at line 72 here,accessed `*(elt)` here]
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codetoanalyze/cpp/pulse/vector.cpp, shrink_to_fit_bad, 3, VECTOR_INVALIDATION, no_bucket, ERROR, [returned from call to `std::vector::at(vec,(unsigned long) 1)`,assigned to `elt`,potentially invalidated by call to `std::vector::shrink_to_fit(vec, ..)` at line 90 here,accessed `*(elt)` here]
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