[biabduction] Remove the flags for modelling alloc and release functions that are unused

Summary: The flags `--biabduction-fallback-model-alloc-pattern` and `--biabduction-fallback-model-free-pattern` were unused because we removed the models from .inferconfig a while ago because of too many false positives. We are implementing a better memory leak check based on Pulse, and are adding the similar flags `--pulse-model-alloc-pattern`  and `--pulse-model-free-pattern`.

Reviewed By: jvillard

Differential Revision: D21061511

fbshipit-source-id: 1b3476c22

infer/man/man1/infer-analyze.txt

@@ -326,14 +326,6 @@ OPTIONS
        --uninit-only
            Activates: Enable --uninit and disable all other checkers
            (Conversely: --no-uninit-only)
-BIABDUCTION CHECKER OPTIONS
-       --biabduction-fallback-model-alloc-pattern string
-           Regex of methods that should be modelled as allocs if definition
-           is missing
-
-       --biabduction-fallback-model-free-pattern string
-           Regex of methods that should be modelled as free if definition is
-           missing
 BUCK OPTIONS
        --merge
            Activates: Merge the captured results directories specified in the

infer/man/man1/infer-full.txt

@@ -114,14 +114,6 @@ OPTIONS
            using the checkers framework (Conversely: --biabduction)       
     See also infer-analyze(1).
 
-       --biabduction-fallback-model-alloc-pattern string
-           Regex of methods that should be modelled as allocs if definition
-           is missing           See also infer-analyze(1).
-
-       --biabduction-fallback-model-free-pattern string
-           Regex of methods that should be modelled as free if definition is
-           missing           See also infer-analyze(1).
-
        --biabduction-only
            Activates: Enable --biabduction and disable all other checkers
            (Conversely: --no-biabduction-only)           See also infer-analyze(1).
@@ -1163,12 +1155,6 @@ INTERNAL OPTIONS
            /my/source/File.java with project root /my/root into
            ../source/File.java
 
-       --biabduction-fallback-model-alloc-pattern-reset
-           Cancel the effect of --biabduction-fallback-model-alloc-pattern.
-
-       --biabduction-fallback-model-free-pattern-reset
-           Cancel the effect of --biabduction-fallback-model-free-pattern.
-
        --biabduction-models-mode
            Activates: Mode for analyzing the biabduction models (Conversely:
            --no-biabduction-models-mode)

infer/man/man1/infer.txt

@@ -114,14 +114,6 @@ OPTIONS
            using the checkers framework (Conversely: --biabduction)       
     See also infer-analyze(1).
 
-       --biabduction-fallback-model-alloc-pattern string
-           Regex of methods that should be modelled as allocs if definition
-           is missing           See also infer-analyze(1).
-
-       --biabduction-fallback-model-free-pattern string
-           Regex of methods that should be modelled as free if definition is
-           missing           See also infer-analyze(1).
-
        --biabduction-only
            Activates: Enable --biabduction and disable all other checkers
            (Conversely: --no-biabduction-only)           See also infer-analyze(1).

infer/src/base/Config.ml

@@ -129,8 +129,6 @@ let ivar_attributes = "ivar_attributes"
 
 let java_lambda_marker_infix = "$Lambda$"
 
-let manual_biabduction = "BIABDUCTION CHECKER OPTIONS"
-
 let manual_buck = "BUCK OPTIONS"
 
 let manual_buffer_overrun = "BUFFER OVERRUN OPTIONS"
@@ -645,18 +643,6 @@ and array_level =
 |}
 
 
-and biabduction_model_alloc_pattern =
-  CLOpt.mk_string_opt ~long:"biabduction-fallback-model-alloc-pattern"
-    ~in_help:InferCommand.[(Analyze, manual_biabduction)]
-    "Regex of methods that should be modelled as allocs if definition is missing"
-
-
-and biabduction_model_free_pattern =
-  CLOpt.mk_string_opt ~long:"biabduction-fallback-model-free-pattern"
-    ~in_help:InferCommand.[(Analyze, manual_biabduction)]
-    "Regex of methods that should be modelled as free if definition is missing"
-
-
 and bootclasspath =
   CLOpt.mk_string_opt ~long:"bootclasspath"
     ~in_help:InferCommand.[(Capture, manual_java)]
@@ -2536,10 +2522,6 @@ and append_buck_flavors = !append_buck_flavors
 
 and array_level = !array_level
 
-and biabduction_model_alloc_pattern = Option.map ~f:Str.regexp !biabduction_model_alloc_pattern
-
-and biabduction_model_free_pattern = Option.map ~f:Str.regexp !biabduction_model_free_pattern
-
 and biabduction_models_mode = !biabduction_models_mode
 
 and bootclasspath = !bootclasspath

infer/src/base/Config.mli

@@ -172,10 +172,6 @@ val anon_args : string list
 
 val array_level : int
 
-val biabduction_model_alloc_pattern : Str.regexp option
-
-val biabduction_model_free_pattern : Str.regexp option
-
 val biabduction_models_mode : bool
 
 val bo_debug : int

infer/src/biabduction/SymExec.ml

@@ -1398,19 +1398,6 @@ let rec sym_exec exe_env tenv current_summary instr_ (prop_ : Prop.normal Prop.t
                         let ret_type = attrs.ProcAttributes.ret_type in
                         let model_as_malloc ret_type resolved_pname =
                           Objc_models.is_malloc_model ret_type resolved_pname
-                          ||
-                          match Config.biabduction_model_alloc_pattern with
-                          | Some pat ->
-                              Str.string_match pat (Procname.to_string resolved_pname) 0
-                          | None ->
-                              false
-                        in
-                        let model_as_free resolved_pname =
-                          match Config.biabduction_model_free_pattern with
-                          | Some pat ->
-                              Str.string_match pat (Procname.to_string resolved_pname) 0
-                          | None ->
-                              false
                         in
                         match attrs.ProcAttributes.objc_accessor with
                         | Some objc_accessor ->
@@ -1422,10 +1409,6 @@ let rec sym_exec exe_env tenv current_summary instr_ (prop_ : Prop.normal Prop.t
                             (* If it's an alloc model, call alloc rather than skipping *)
                             sym_exec_alloc_model exe_env resolved_pname ret_type tenv ret_id_typ
                               current_summary loc prop path
-                        | None when model_as_free resolved_pname ->
-                            (* If it's an free model, call free rather than skipping *)
-                            sym_exec_free_model exe_env ret_id_typ n_actual_params tenv
-                              current_summary loc prop path
                         | _ ->
                             let is_objc_instance_method =
                               ClangMethodKind.equal attrs.ProcAttributes.clang_method_kind
@@ -1825,13 +1808,6 @@ and sym_exec_alloc_model exe_env pname ret_typ tenv ret_id_typ summary loc prop
   instrs exe_env tenv summary (Instrs.singleton alloc_instr) [(prop, path)]
 
 
-and sym_exec_free_model exe_env ret_id_typ args tenv summary loc prop path : Builtin.ret_typ =
-  let free_fun = Exp.Const (Const.Cfun BuiltinDecl.free) in
-  let free_instr = Sil.Call (ret_id_typ, free_fun, args, loc, CallFlags.default) in
-  L.d_strln "No spec found, method is modelled as free, executing free... " ;
-  instrs exe_env tenv summary (Instrs.singleton free_instr) [(prop, path)]
-
-
 (** Perform symbolic execution for a function call *)
 and proc_call exe_env callee_summary
     {Builtin.summary; tenv; prop_= pre; path; ret_id_typ; args= actual_pars; loc} =

infer/tests/codetoanalyze/objc/errors/Makefile

@@ -9,8 +9,7 @@ CLANG_OPTIONS = -c $(OBJC_CLANG_OPTIONS)
 
 CLEAN_EXTRA = infer-out-arc infer-out-all infer-out-all infer-out-arc \
               issues.exp.test.all issues.exp.test.arc issues.exp.test.default
-INFER_OPTIONS = --biabduction-only --dump-duplicate-symbols --debug-exceptions --project-root $(TESTS_DIR) \
+INFER_OPTIONS = --biabduction-only --dump-duplicate-symbols --debug-exceptions --project-root $(TESTS_DIR)
-		--biabduction-fallback-model-alloc-pattern AB[IF].*Create.* --biabduction-fallback-model-free-pattern ABFRelease
 INFERPRINT_OPTIONS = --issues-tests
 
 SOURCES_DEFAULT = \
@@ -22,7 +21,6 @@ SOURCES_DEFAULT = \
   memory_leaks_benchmark/CoreVideoExample.m \
   memory_leaks_benchmark/RetainCycleLength3.m \
   memory_leaks_benchmark/ReleasedInBlock.m \
-  memory_leaks_benchmark/BAPatLeak.m \
   npe/dynamic_dispatch.m \
   npe/Fraction.m \
   npe/NPD_core_foundation.m \

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

@@ -71,7 +71,6 @@ codetoanalyze/objc/errors/subtyping/KindOfClassExample.m, shouldThrowDivideByZer
 codetoanalyze/objc/errors/subtyping/KindOfClassExample.m, shouldThrowDivideByZero2, 2, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure shouldThrowDivideByZero2(),start of procedure init,return from a call to Base::init,start of procedure returnsZero2(),Taking false branch,return from a call to returnsZero2]
 codetoanalyze/objc/errors/subtyping/KindOfClassExample.m, shouldThrowDivideByZero3, 3, DIVIDE_BY_ZERO, no_bucket, ERROR, [start of procedure shouldThrowDivideByZero3(),start of procedure init,return from a call to Derived::init,Taking true branch]
 codetoanalyze/objc/errors/variadic_methods/premature_nil_termination.m, PrematureNilTermA::nilInArrayWithObjects, 5, PREMATURE_NIL_TERMINATION_ARGUMENT, B1, ERROR, [start of procedure nilInArrayWithObjects]
-codetoanalyze/objc/errors/memory_leaks_benchmark/BAPatLeak.m, A::someMethod_bad, 1, MEMORY_LEAK, no_bucket, ERROR, [start of procedure someMethod_bad]
 codetoanalyze/objc/errors/memory_leaks_benchmark/CoreVideoExample.m, CoreVideoExample::cvpixelbuffer_not_released_leak, 1, MEMORY_LEAK, no_bucket, ERROR, [start of procedure cvpixelbuffer_not_released_leak]
 codetoanalyze/objc/errors/memory_leaks_benchmark/NSData_models_tests.m, NSData_models_tests::macForIV:, 2, MEMORY_LEAK, no_bucket, ERROR, [start of procedure macForIV:]
 codetoanalyze/objc/errors/memory_leaks_benchmark/NSString_models_tests.m, StringInitA::hexStringValue, 11, MEMORY_LEAK, no_bucket, ERROR, [start of procedure hexStringValue,Skipping CFStringCreateWithBytesNoCopy(): method has no implementation,Taking false branch]

infer/tests/codetoanalyze/objc/errors/memory_leaks_benchmark/BAPatLeak.m

@@ -1,33 +0,0 @@
-/*
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-#include <Foundation/NSObject.h>
-#include <stdlib.h>
-
-typedef struct ABFDataRef {
-} ABFDataRef;
-
-// if impl is there --biabduction-fallback-model-alloc-pattern wont catch it
-ABFDataRef* ABFDataCreate(size_t size);
-void ABRelease(ABFDataRef*);
-
-@interface A : NSObject
-@end
-
-@implementation A
-
-- (void)someMethod_bad {
-  ABFDataRef* someData = ABFDataCreate(4);
-  // this allocates a new ABFData structure
-}
-
-- (void)someMethod_ok {
-  ABFDataRef* someData = ABFDataCreate(4);
-  // this allocates a new ABFData structure
-  ABFRelease(someData);
-}
-
-@end