[issues] do not dedup issues when `Config.filtering` is unset

Summary: Deduplication can make debugging infer findings trickier.

Reviewed By: ngorogiannis

Differential Revision: D14773548

fbshipit-source-id: 731c7b749

infer/src/IR/Errlog.mli

@@ -45,17 +45,15 @@ type err_key = private
   {severity: Exceptions.severity; err_name: IssueType.t; err_desc: Localise.error_desc}
 [@@deriving compare]
 
-(* Merges two error keys, setting the result's severity to the maximum
-   of that of the two arguments and giving the user the opportunity
-   to pass a function to merge the IssueTypes and descriptions
-   of the two. *)
-
 val merge_err_key :
      err_key
   -> err_key
   -> merge_issues:(IssueType.t -> IssueType.t -> IssueType.t)
   -> merge_descriptions:(string list -> string list -> string)
   -> err_key
+(** Merges two error keys, setting the result's severity to the maximum of that of the two arguments
+   and giving the user the opportunity to pass a function to merge the IssueTypes and descriptions
+   of the two. *)
 
 (** Data associated to a specific error *)
 type err_data = private
@@ -71,12 +69,12 @@ type err_data = private
   ; doc_url: string option  (** url to documentation of the issue type *)
   ; access: string option
   ; extras: Jsonbug_t.extra option }
-
+[@@deriving compare]
-(* Merges two err_datas, throwing out most information and setting the trace of the
-   result to the concatenation of the traces of the two arguments with a
-   separator in between. Used specifically for QuandaryBO. *)
 
 val merge_err_data : err_data -> err_data -> err_data
+(** Merges two err_datas, throwing out most information and setting the trace of the result to the
+   concatenation of the traces of the two arguments with a separator in between. Used specifically
+   for QuandaryBO. *)
 
 (** Type of the error log *)
 type t

infer/src/backend/Issue.ml

@@ -8,6 +8,13 @@
 open! IStd
 module L = Logging
 
+type t =
+  { proc_name: Typ.Procname.t
+  ; proc_location: Location.t
+  ; err_key: Errlog.err_key
+  ; err_data: Errlog.err_data }
+[@@deriving compare]
+
 (** Wrapper of an issue that compares all parts except the procname *)
 type err_data_ = Errlog.err_data
 
@@ -21,7 +28,7 @@ type proc_name_ = Typ.Procname.t
 (* ignore proc name *)
 let compare_proc_name_ _ _ = 0
 
-type t =
+type t_ignore_duplicates = t =
   {proc_name: proc_name_; proc_location: Location.t; err_key: Errlog.err_key; err_data: err_data_}
 [@@deriving compare]
 
@@ -30,7 +37,10 @@ type t =
      identical warning on the same line. Accomplish this by sorting without regard to procname, then
      de-duplicating. *)
 let sort_filter_issues issues =
-  let issues' = List.dedup_and_sort ~compare issues in
+  let issues' =
+    let compare = if Config.filtering then compare_t_ignore_duplicates else compare in
+    List.dedup_and_sort ~compare issues
+  in
   ( if Config.developer_mode then
     let num_pruned_issues = List.length issues - List.length issues' in
     if num_pruned_issues > 0 then

infer/src/backend/Issue.mli

@@ -7,11 +7,10 @@
 
 open! IStd
 
-type err_data_ = Errlog.err_data
-
-type proc_name_ = Typ.Procname.t
-
 type t =
-  {proc_name: proc_name_; proc_location: Location.t; err_key: Errlog.err_key; err_data: err_data_}
+  { proc_name: Typ.Procname.t
+  ; proc_location: Location.t
+  ; err_key: Errlog.err_key
+  ; err_data: Errlog.err_data }
 
 val sort_filter_issues : t list -> t list

infer/tests/codetoanalyze/cpp/errors/issues.exp

@@ -1,4 +1,5 @@
 INFER_MODEL/cpp/include/infer_model/unique_ptr.h, std::operator!=<65d659492edc5cb5>, 1, Abduction_case_not_implemented, no_bucket, ERROR, [start of procedure std::operator!=<65d659492edc5cb5>()]
+INFER_MODEL/cpp/include/infer_model/unique_ptr.h, std::operator!=<a91655a1ebb7418b>, 1, Abduction_case_not_implemented, no_bucket, ERROR, [start of procedure std::operator!=<a91655a1ebb7418b>()]
 INFER_MODEL/cpp/include/infer_model/unique_ptr.h, std::unique_ptr<int,unique_ptr_with_deleter::Deleter<int>>::__infer_inner_destructor_~unique_ptr, 0, Missing_fld, no_bucket, ERROR, [start of procedure __infer_inner_destructor_~unique_ptr,start of procedure Pointer,return from a call to unique_ptr_with_deleter::Pointer<int>::Pointer,start of procedure Pointer,return from a call to unique_ptr_with_deleter::Pointer<int>::Pointer]
 INFER_MODEL/cpp/include/infer_model/unique_ptr.h, std::unique_ptr<int[_*4],unique_ptr_with_deleter::Deleter<int[_*4]>>::__infer_inner_destructor_~unique_ptr, 0, Missing_fld, no_bucket, ERROR, [start of procedure __infer_inner_destructor_~unique_ptr,start of procedure Pointer,return from a call to unique_ptr_with_deleter::Pointer<int[_*4]>::Pointer,start of procedure Pointer,return from a call to unique_ptr_with_deleter::Pointer<int[_*4]>::Pointer]
 codetoanalyze/cpp/errors/biabduction/process_splitting_assert.cpp, fail, 2, NULL_DEREFERENCE, B5, ERROR, [start of procedure fail(),Taking true branch]
@@ -11,7 +12,9 @@ codetoanalyze/cpp/errors/c_tests/c_bugs.cpp, resource_leak_is_reported, 0, RESOU
 codetoanalyze/cpp/errors/include_header/header.h, header::A::div0, 0, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure div0]
 codetoanalyze/cpp/errors/include_header/header.h, header::div0_fun, 0, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure header::div0_fun()]
 codetoanalyze/cpp/errors/include_header/header2.h, header2::B<header2::A>::div0, 0, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure div0]
+codetoanalyze/cpp/errors/include_header/header2.h, header2::B<int>::div0, 0, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure div0]
 codetoanalyze/cpp/errors/include_header/header2.h, header2::div0_templ<header2::A>, 1, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure header2::div0_templ<header2::A>()]
+codetoanalyze/cpp/errors/include_header/header2.h, header2::div0_templ<int>, 1, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure header2::div0_templ<int>()]
 codetoanalyze/cpp/errors/memory_leaks/array_leak.cpp, leak, 6, MEMORY_LEAK, CPP, ERROR, [start of procedure leak(),return from a call to leak]
 codetoanalyze/cpp/errors/memory_leaks/object_leak.cpp, object_leak, 0, MEMORY_LEAK, CPP, ERROR, [start of procedure object_leak(),start of procedure Rectangle,return from a call to Rectangle::Rectangle,return from a call to object_leak]
 codetoanalyze/cpp/errors/memory_leaks/raii_malloc.cpp, memory_leak, 0, MEMORY_LEAK, no_bucket, ERROR, [start of procedure memory_leak(),return from a call to memory_leak]

infer/tests/codetoanalyze/cpp/liveness/issues.exp

@@ -25,5 +25,6 @@ codetoanalyze/cpp/liveness/dead_stores.cpp, dead_stores::unused_tmp_bad, 0, DEAD
 codetoanalyze/cpp/liveness/dead_stores.cpp, dead_stores::use_then_dead_bad, 3, DEAD_STORE, no_bucket, ERROR, [Write of unused value]
 codetoanalyze/cpp/liveness/dead_stores_constexpr.cpp, capture_const_bad, 1, DEAD_STORE, no_bucket, ERROR, [Write of unused value]
 codetoanalyze/cpp/liveness/non_type_template_param.cpp, X<3>::isZeroBad, 1, DEAD_STORE, no_bucket, ERROR, [Write of unused value]
+codetoanalyze/cpp/liveness/non_type_template_param.cpp, X<7>::isZeroBad, 1, DEAD_STORE, no_bucket, ERROR, [Write of unused value]
 codetoanalyze/cpp/liveness/non_type_template_param.cpp, instanciateTemplateBad, 3, DEAD_STORE, no_bucket, ERROR, [Write of unused value]
 codetoanalyze/cpp/liveness/non_type_template_param.cpp, instanciateTemplateConstOk_FP, 1, DEAD_STORE, no_bucket, ERROR, [Write of unused value]

infer/tests/codetoanalyze/objcpp/errors/issues.exp

@@ -1,4 +1,5 @@
 codetoanalyze/objcpp/errors/BlockLfield.mm, A::mOk, 1, PRECONDITION_NOT_FOUND, no_bucket, ERROR, [start of procedure mOk]
 codetoanalyze/objcpp/errors/BlockLfield.mm, CFunWithBlockOk, 2, PRECONDITION_NOT_MET, no_bucket, WARNING, [start of procedure CFunWithBlockOk()]
+codetoanalyze/objcpp/errors/BlockLfield.mm, CFunWithBlockOk_objc_blockA::mOk_1, 2, PRECONDITION_NOT_MET, no_bucket, WARNING, [start of procedure CFunWithBlockOk()]
 codetoanalyze/objcpp/errors/c_functions.mm, main, 4, NULL_DEREFERENCE, B5, ERROR, [start of procedure main(),start of procedure autoUpdating,return from a call to A::autoUpdating,start of procedure autoUpdating2,Skipping dispatch_once2(): method has no implementation,return from a call to A::autoUpdating2,Executing synthesized getter block,start of procedure block,return from a call to objc_blockobjc_blockA::autoUpdating_1_2,Message block with receiver nil returns nil.]
 codetoanalyze/objcpp/errors/retain_cycles/RetainCycleWithStruct.mm, Animation::tracer, 2, RETAIN_CYCLE, no_bucket, ERROR, [start of procedure tracer,start of procedure _State,return from a call to _State::_State,start of procedure initWithAnimation:,Taking true branch,return from a call to Tracer::initWithAnimation:]