[racerd] rationalize test suite

Summary:
The C++ tests were a bit of a mess. This diff tries to enforce the following principles:
- mark every function with `_ok` or `_bad` so that when a function appears in `issues.exp` it's easy to figure out the intention;
- mark every false negative and positive with `FP_` and `FN_` to document expectations;
- make every function access one field and participate in at most one issue report so that it's easier to assess changes.

Reviewed By: jvillard

Differential Revision: D21278627

fbshipit-source-id: 9698f716f

infer/tests/codetoanalyze/cpp/racerd/basics.cpp

@@ -13,16 +13,17 @@ class Basic {
  public:
   Basic() {}
 
-  void set(int new_value) {
+  void set_not_guarded_ok(int new_value) { not_guarded = new_value; }
-    not_guarded = new_value;
+
+  int get_not_guarded_ok() { return not_guarded; }
+
+  void set_well_guarded_ok(int new_value) {
     mutex_.lock();
     well_guarded = new_value;
-    suspiciously_read = new_value;
     mutex_.unlock();
-    suspiciously_written = new_value;
   }
 
-  int get1() {
+  int get_well_guarded_ok() {
     int result;
     mutex_.lock();
     result = well_guarded;
@@ -30,19 +31,28 @@ class Basic {
     return result;
   }
 
-  int get2() {
+  void set_suspiciously_read_bad(int new_value) {
-    int result;
     mutex_.lock();
-    result = suspiciously_written;
+    suspiciously_read = new_value;
     mutex_.unlock();
-    return result;
   }
 
-  int get3() { return not_guarded; }
+  int get_suspiciously_read_bad() { return suspiciously_read; }
 
-  int get4() { return suspiciously_read; }
+  void set_suspiciously_written_bad(int new_value) {
+    // the only reason we report here is because of the use of a mutex
+    mutex_.lock();
+    mutex_.unlock();
+    suspiciously_written = new_value;
+  }
 
-  int get5() { return get_private_suspiciously_read(); }
+  int get_suspiciously_written_bad() {
+    int result;
+    mutex_.lock();
+    result = suspiciously_written;
+    mutex_.unlock();
+    return result;
+  }
 
   void write_array_under_lock_ok(char* arr1) {
     mutex_.lock();
@@ -52,17 +62,15 @@ class Basic {
 
   int read_array_outside_lock_ok(char* arr2, int i) { return arr2[i]; }
 
-  void set_double(int new_value) {
+  void set_double_lock_guarded_ok(int new_value) {
     mutex_.lock();
     mutex_2.lock();
     double_lock_guarded = new_value;
     mutex_2.unlock();
-    single_lock_guarded = new_value;
-    single_lock_suspiciously_read = new_value;
     mutex_.unlock();
   }
 
-  int test_double_lock_1_ok() {
+  int read_double_lock_guarded_ok() {
     int result;
     mutex_2.lock();
     result = double_lock_guarded;
@@ -70,15 +78,17 @@ class Basic {
     return result;
   }
 
-  int test_double_lock_2_ok() {
+  void set_double_suspiciously_read_bad(int new_value) {
-    int result;
     mutex_.lock();
-    result = single_lock_guarded;
+    mutex_2.lock();
+    single_lock_suspiciously_read = new_value;
+    mutex_2.unlock();
     mutex_.unlock();
-    return result;
   }
 
-  int test_double_lock_bad() { return single_lock_suspiciously_read; }
+  int read_double_suspiciously_read_bad() {
+    return single_lock_suspiciously_read;
+  }
 
  private:
   int well_guarded;
@@ -86,11 +96,10 @@ class Basic {
   int suspiciously_written;
   int not_guarded;
   int double_lock_guarded;
-  int single_lock_guarded;
   int single_lock_suspiciously_read;
   std::mutex mutex_;
   std::mutex mutex_2;
 
-  int get_private_suspiciously_read() { return suspiciously_read; }
+  int get_private_suspiciously_read_ok() { return suspiciously_read; }
 };
 } // namespace basics

infer/tests/codetoanalyze/cpp/racerd/basics_no_mutex.cpp

@@ -11,19 +11,15 @@ class BasicsNoMutex {
  public:
   BasicsNoMutex() {}
 
-  void set(int new_value) {
+  void set_ok(int new_value) {
     field_1 = new_value;
     field_2 = new_value;
-    field_3 = new_value;
   }
 
-  int get1() { return field_1; }
+  int get_field1_ok() { return field_1; }
-
-  int get2() { return field_2; }
 
  private:
   int field_1;
   int field_2;
-  int field_3;
 };
 } // namespace basics

infer/tests/codetoanalyze/cpp/racerd/constructor_formals.cpp

@@ -8,46 +8,20 @@
 #include <mutex>
 
 namespace constructor_formals {
-
-struct Y {
-  Y() : rawStatus_(-3) {}
-  Y(const Y& p) = default;
-  Y& operator=(const Y& p) = default;
-  Y(Y&& p) noexcept : rawStatus_(p.rawStatus_) { p.rawStatus_ = -3; }
-
-  int rawStatus_;
-};
-
-struct S {
-  Y w() { return returnCode; }
-
-  Y returnCode;
-};
-
-struct SU {
-  void p() {
-    S s;
-    auto result = s.w();
-  }
-};
-
 class Basic {
  public:
-  Basic() {}
+  // there can be a race here between the initializer read and the set function
+  // below
+  Basic(Basic& other) : field_(other.field_) {}
 
-  int test_locked() {
+  void FN_set_under_lock_bad(int value) {
-    SU su;
     mutex_.lock();
-    su.p();
+    field_ = value;
-  }
+    mutex_.unlock();
-
-  int test_not_locked() {
-    SU su;
-    su.p(); // FP fixed after adding ownership to formal parameters of
-            // constructors
   }
 
  private:
   std::mutex mutex_;
+  int field_;
 };
 } // namespace constructor_formals

infer/tests/codetoanalyze/cpp/racerd/constructor_ownership.cpp

@@ -1,88 +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 <mutex>
-#include <string>
-#include <unordered_map>
-
-namespace constructors {
-
-struct dynamic {
-  enum T {
-    NULLT,
-  };
-
- private:
-  struct ObjectMaker;
-
- public:
-  template <class T>
-  dynamic(T t);
-  static ObjectMaker object();
-  dynamic(dynamic&&) noexcept;
-  dynamic& operator=(dynamic&&) noexcept;
-  dynamic& operator[](dynamic const&) &;
-  dynamic&& operator[](dynamic const&) &&;
-  template <class K, class V>
-  void insert(K&&, V&& val);
-
- private:
-  T type_;
-};
-
-dynamic& dynamic::operator=(dynamic&& o) noexcept {
-  if (&o != this) {
-    if (type_ == o.type_) {
-    } else {
-      type_ = o.type_;
-    }
-  }
-  return *this;
-}
-
-struct dynamic::ObjectMaker {
-  friend struct dynamic;
-
-  explicit ObjectMaker() {}
-
-  ObjectMaker(ObjectMaker&&) = default;
-};
-
-inline dynamic::ObjectMaker dynamic::object() { return ObjectMaker(); }
-
-struct BSS {
-  dynamic toJson_ok() const noexcept {
-    dynamic ret = dynamic::object();
-    ret["key"] = dynamic::object();
-    return ret;
-  }
-
-  dynamic& toJson_race(dynamic& ret) const noexcept {
-    ret["key"] = dynamic::object();
-    return ret;
-  }
-};
-
-struct TSL {
-  std::mutex mutex_;
-
-  void not_locked_ok(dynamic& ret) { BSS().toJson_ok(); }
-
-  void locked_ok(dynamic& ret) {
-    std::lock_guard<std::mutex> lock(mutex_);
-    BSS().toJson_ok();
-  }
-
-  void FN_not_locked_race(dynamic& ret) { BSS().toJson_race(ret); }
-
-  void locked_race(dynamic& ret) {
-    std::lock_guard<std::mutex> lock(mutex_);
-    BSS().toJson_race(ret);
-  }
-};
-
-} // namespace constructors

infer/tests/codetoanalyze/cpp/racerd/containers.cpp

@@ -16,12 +16,16 @@ struct A {
 
 struct B {
 
-  void access_container_and_contents_ok(int key, int value) {
+  void FN_write_container_bad(int key, int value) {
-    int s = map.size();
     mutex_.lock();
     map[key].value = value;
+    mutex_.unlock();
   }
 
+  int FN_get_bad(int key) { return map[key].value; }
+
+  int FN_size_bad() { return map.size(); }
+
  private:
   std::map<int, A> map;
   std::mutex mutex_;

infer/tests/codetoanalyze/cpp/racerd/dereferencing.cpp

@@ -29,36 +29,97 @@ class Basic {
  public:
   Basic() {}
 
-  void pointer_deref_race(int* v1) { (*v1)++; } // HIL: *(v1) := *(v1) + 1
+  void FN_pointer_deref_bad(int b) {
-
+    if (b) {
-  void pointer_arith_ok(int* v2) { v2++; } // HIL: v2 := v2 + 1
+      pointer_deref(&p);
+    } else {
+      mutex_.lock();
+      pointer_deref(&p);
+      mutex_.unlock();
+    }
+  }
 
-  void value_ok(int v3) { v3++; } // HIL: v3 := v3 + 1
+  void pointer_arith_ok(int b) {
+    if (b) {
+      pointer_arith(&q);
+    } else {
+      mutex_.lock();
+      pointer_arith(&q);
+      mutex_.unlock();
+    }
+  }
 
-  void field_race(int& f) { f++; } // HIL: *(f) := *(f) + 1
+  void value_ok(int b) {
+    if (b) {
+      value(h);
+    } else {
+      mutex_.lock();
+      value(h);
+      mutex_.unlock();
+    }
+  }
 
-  void mixed_deref_race(X& xparam) {
+  void FN_field_bad(int b) {
-    xparam.x1->w++; // HIL: xparam->x1->w := xparam->x1->w + 1
+    if (b) {
-    (*xparam.x1).u++; // HIL: xparam->x1->u := xparam->x1->u + 1
+      field(g);
-    (**xparam.x2).a.b.c++; // HIL:*(xparam->x2)->a.b.c:= *(xparam->x2)->a.b.c+1
+    } else {
+      mutex_.lock();
+      field(g);
+      mutex_.unlock();
+    }
   }
 
-  void call1() {
+  void deref_w_bad(int b) {
-    pointer_deref_race(&p); // race - FalseNegative
+    if (b) {
-    pointer_arith_ok(&q); // no race
+      deref_w(x);
-    value_ok(h); // no race
+    } else {
-    field_race(g); // race - FalseNegative
+      mutex_.lock();
-    mixed_deref_race(x); // race
+      deref_w(x);
+      mutex_.unlock();
+    }
   }
 
-  int test_lock() {
+  void deref_u_bad(int b) {
-    mutex_.lock();
+    if (b) {
-    call1();
+      deref_u(x);
+    } else {
+      mutex_.lock();
+      deref_u(x);
+      mutex_.unlock();
+    }
   }
 
-  int test_unlock() { call1(); }
+  void deref_abc_bad(int b) {
+    if (b) {
+      deref_abc(x);
+    } else {
+      mutex_.lock();
+      deref_abc(x);
+      mutex_.unlock();
+    }
+  }
 
  private:
+  void pointer_deref(int* v1) { (*v1)++; } // HIL: *(v1) := *(v1) + 1
+
+  void pointer_arith(int* v2) { v2++; } // HIL: v2 := v2 + 1
+
+  void value(int v3) { v3++; } // HIL: v3 := v3 + 1
+
+  void field(int& f) { f++; } // HIL: *(f) := *(f) + 1
+
+  void deref_w(X& xparam) {
+    xparam.x1->w++; // HIL: xparam->x1->w := xparam->x1->w + 1
+  }
+
+  void deref_u(X& xparam) {
+    (*xparam.x1).u++; // HIL: xparam->x1->u := xparam->x1->u + 1
+  }
+
+  void deref_abc(X& xparam) {
+    (**xparam.x2).a.b.c++; // HIL:*(xparam->x2)->a.b.c:= *(xparam->x2)->a.b.c+1
+  }
+
   int g;
   int h;
   int p;

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

@@ -1,25 +1,17 @@
-codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::get2, 36, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
+codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::get_suspiciously_read_bad, 40, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
-codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::get4, 43, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
+codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::get_suspiciously_written_bad, 52, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
-codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::get5, 45, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to basics::Basic::get_private_suspiciously_read,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
+codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::read_double_suspiciously_read_bad, 90, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->single_lock_suspiciously_read`,<Write trace>,access to `this->single_lock_suspiciously_read`]
-codetoanalyze/cpp/racerd/basics.cpp, basics::Basic::test_double_lock_bad, 81, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->single_lock_suspiciously_read`,<Write trace>,access to `this->single_lock_suspiciously_read`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_abc_bad, 94, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_abc,access to `*(this->x.x2)->a.b.c`,<Write trace>,call to dereferencing::Basic::deref_abc,access to `*(this->x.x2)->a.b.c`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::call1, 51, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::mixed_deref_race,access to `*(this->x.x2)->a.b.c`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `*(this->x.x2)->a.b.c`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_abc_bad, 97, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_abc,access to `*(this->x.x2)->a.b.c`,<Write trace>,call to dereferencing::Basic::deref_abc,access to `*(this->x.x2)->a.b.c`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::call1, 51, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->w`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->w`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_u_bad, 84, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_u,access to `this->x.x1->u`,<Write trace>,call to dereferencing::Basic::deref_u,access to `this->x.x1->u`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::call1, 51, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->u`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->u`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_u_bad, 87, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_u,access to `this->x.x1->u`,<Write trace>,call to dereferencing::Basic::deref_u,access to `this->x.x1->u`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::test_unlock, 59, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->w`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->w`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_w_bad, 74, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_w,access to `this->x.x1->w`,<Write trace>,call to dereferencing::Basic::deref_w,access to `this->x.x1->w`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::test_unlock, 59, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->u`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `this->x.x1->u`]
+codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::deref_w_bad, 77, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::deref_w,access to `this->x.x1->w`,<Write trace>,call to dereferencing::Basic::deref_w,access to `this->x.x1->w`]
-codetoanalyze/cpp/racerd/dereferencing.cpp, dereferencing::Basic::test_unlock, 59, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `*(this->x.x2)->a.b.c`,<Write trace>,call to dereferencing::Basic::call1,call to dereferencing::Basic::mixed_deref_race,access to `*(this->x.x2)->a.b.c`]
+codetoanalyze/cpp/racerd/lock_guard_with_scope.cpp, basics::LockGuardWithScope::FP_suspiciously_written_ok, 47, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
-codetoanalyze/cpp/racerd/lock_guard.cpp, basics::LockGuard::get2, 34, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
+codetoanalyze/cpp/racerd/lock_guard_with_scope.cpp, basics::LockGuardWithScope::suspiciously_read_bad, 38, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
-codetoanalyze/cpp/racerd/lock_guard.cpp, basics::LockGuard::get4, 40, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
-codetoanalyze/cpp/racerd/lock_guard.cpp, basics::LockGuard::test1, 44, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
-codetoanalyze/cpp/racerd/lock_guard_with_scope.cpp, basics::LockGuardWithScope::get2, 37, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
-codetoanalyze/cpp/racerd/lock_guard_with_scope.cpp, basics::LockGuardWithScope::get4, 43, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read`,<Write trace>,access to `this->suspiciously_read`]
-codetoanalyze/cpp/racerd/reporting.cpp, reporting::Basic::call1, 24, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to reporting::Basic::test,access to `this->x.x1->w`,<Write trace>,call to reporting::Basic::call1,call to reporting::Basic::test,access to `this->x.x1->w`]
-codetoanalyze/cpp/racerd/reporting.cpp, reporting::Basic::test_unlock, 32, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,call to reporting::Basic::call1,call to reporting::Basic::test,access to `this->x.x1->w`,<Write trace>,call to reporting::Basic::call1,call to reporting::Basic::test,access to `this->x.x1->w`]
 codetoanalyze/cpp/racerd/std_lock.cpp, basics::StdLock::get_bad, 31, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->not_guarded`,<Write trace>,access to `this->not_guarded`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get2, 45, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written1`,<Write trace>,access to `this->suspiciously_written1`]
+codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::suspiciously_read1_bad, 68, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read1`,<Write trace>,access to `this->suspiciously_read1`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get2, 46, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written2`,<Write trace>,access to `this->suspiciously_written2`]
+codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::suspiciously_read2_trylock_bad, 92, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read2`,<Write trace>,access to `this->suspiciously_read2`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get4, 55, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read1`,<Write trace>,access to `this->suspiciously_read1`]
+codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::suspiciously_read3_deferlock_bad, 107, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read3`,<Write trace>,access to `this->suspiciously_read3`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get4, 56, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read2`,<Write trace>,access to `this->suspiciously_read2`]
+codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::suspiciously_written_ok, 78, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_written`,<Write trace>,access to `this->suspiciously_written`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get5, 64, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read1`,<Write trace>,access to `this->suspiciously_read1`]
+codetoanalyze/cpp/racerd/without_mutex.cpp, without_mutex::WithoutMutex::get_bad, 15, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->field`,<Write trace>,access to `this->field`]
-codetoanalyze/cpp/racerd/unique_lock.cpp, basics::UniqueLock::get6, 73, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->suspiciously_read1`,<Write trace>,access to `this->suspiciously_read1`]
-codetoanalyze/cpp/racerd/without_mutex.cpp, without_mutex::WithoutMutex::get, 15, LOCK_CONSISTENCY_VIOLATION, no_bucket, WARNING, [<Read trace>,access to `this->field_1`,<Write trace>,access to `this->field_1`]

infer/tests/codetoanalyze/cpp/racerd/locals_char_array.cpp

@@ -11,16 +11,22 @@ namespace locals_char_array {
 
 void f() {
   char line[1024];
+  int x;
   line[0] = line[1];
+  x = 0;
 }
 
 struct A {
-  void not_locked() { f(); }
+  void locals_ok(int b) {
-
+    if (b) {
-  bool locked() {
+      f();
-    mutex_.lock();
+    } else {
-    f();
+      mutex_.lock();
+      f();
+      mutex_.unlock();
+    }
   }
+
   std::mutex mutex_;
 };
 

infer/tests/codetoanalyze/cpp/racerd/locals_ownership.cpp

@@ -17,7 +17,7 @@ class Ownership {
  public:
   Ownership() {}
 
-  int test0_ok() {
+  int struct_ok() {
     X x;
     mutex_.lock();
     x.f = 7;
@@ -25,7 +25,7 @@ class Ownership {
     return x.f;
   }
 
-  int test1_ok() {
+  int ptr_to_struct_ok() {
     X* x = new X();
     mutex_.lock();
     x->f = 7;
@@ -33,7 +33,7 @@ class Ownership {
     return x->f;
   }
 
-  int test2_ok() {
+  int copy_constructor_ok() {
     X x = current; // copy constructor
     mutex_.lock();
     x.f = 7;
@@ -41,7 +41,7 @@ class Ownership {
     return x.f;
   }
 
-  int FN_test2_bad() {
+  int FN_ptr_to_field_struct_bad() {
     X* x = &current;
     mutex_.lock();
     x->f = 7;
@@ -49,7 +49,7 @@ class Ownership {
     return x->f;
   }
 
-  int test3_ok(X xformal) {
+  int copy_formal_ok(X xformal) {
     X x = xformal; // copy constructor
     mutex_.lock();
     x.f = 7;
@@ -57,7 +57,7 @@ class Ownership {
     return x.f;
   }
 
-  int FN_test3_bad(X* xformal) {
+  int FN_ptr_to_formal_bad(X* xformal) {
     X* x = xformal;
     mutex_.lock();
     x->f = 7;

infer/tests/codetoanalyze/cpp/racerd/lock_guard.cpp

@@ -1,56 +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 <mutex>
-
-namespace basics {
-
-class LockGuard {
- public:
-  LockGuard() {}
-
-  void set(int new_value) {
-    not_guarded = new_value;
-    suspiciously_written = new_value;
-    std::lock_guard<std::mutex> lock(mutex_);
-    well_guarded = new_value;
-    suspiciously_read = new_value;
-  }
-
-  int get1() {
-    int result;
-    std::lock_guard<std::mutex> lock(mutex_);
-    result = well_guarded;
-    return result;
-  }
-
-  int get2() {
-    int result;
-    std::lock_guard<std::mutex> lock(mutex_);
-    result = suspiciously_written;
-    return result;
-  }
-
-  int get3() { return not_guarded; }
-
-  int get4() { return suspiciously_read; }
-
-  int test1() {
-    int result = get1();
-    return suspiciously_read + result;
-  }
-
- private:
-  int well_guarded;
-  int suspiciously_read;
-  int suspiciously_written;
-  int not_guarded;
-  std::mutex mutex_;
-
-  int test2() { return suspiciously_read; }
-};
-} // namespace basics

infer/tests/codetoanalyze/cpp/racerd/lock_guard_with_scope.cpp

@@ -13,34 +13,40 @@ class LockGuardWithScope {
  public:
   LockGuardWithScope() {}
 
-  void set(int new_value) {
+  void not_guarded_ok(int b, int new_value) {
-    {
+    if (b) {
-      std::lock_guard<std::mutex> lock(mutex_);
+      not_guarded = new_value;
-      well_guarded = new_value;
+    } else {
-      suspiciously_read = new_value;
+      return not_guarded;
     }
-
-    not_guarded = new_value;
-    suspiciously_written = new_value;
   }
 
-  int get1() {
+  void well_guarded_ok(int b, int new_value) {
-    int result;
     std::lock_guard<std::mutex> lock(mutex_);
-    result = well_guarded;
+    if (b) {
-    return result;
+      well_guarded = new_value;
+    } else {
+      return well_guarded;
+    }
   }
 
-  int get2() {
+  void suspiciously_read_bad(int b, int new_value) {
-    int result;
+    if (b) {
-    std::lock_guard<std::mutex> lock(mutex_);
+      std::lock_guard<std::mutex> lock(mutex_);
-    result = suspiciously_written;
+      suspiciously_read = new_value;
-    return result;
+    } else {
+      return suspiciously_read;
+    }
   }
 
-  int get3() { return not_guarded; }
+  void FP_suspiciously_written_ok(int b, int new_value) {
-
+    if (b) {
-  int get4() { return suspiciously_read; }
+      suspiciously_written = new_value;
+    } else {
+      std::lock_guard<std::mutex> lock(mutex_);
+      return suspiciously_written;
+    }
+  }
 
  private:
   int well_guarded;

infer/tests/codetoanalyze/cpp/racerd/reporting.cpp

@@ -1,38 +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 <mutex>
-
-namespace reporting {
-
-struct X {
-  int w;
-  X* x1;
-};
-
-class Basic {
- public:
-  Basic() {}
-
-  void test(X& xparam) { xparam.x1->w++; }
-
-  void call1() {
-    test(x); // race
-  }
-
-  int test_lock() {
-    mutex_.lock();
-    call1();
-  }
-
-  int test_unlock() { call1(); }
-
- private:
-  X x;
-  std::mutex mutex_;
-};
-} // namespace reporting

infer/tests/codetoanalyze/cpp/racerd/string_literal.cpp

@@ -1,17 +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.
- */
-extern int nondet_int();
-extern char* nondet_string();
-
-void loop() {
-  int i = 0;
-  char* s = nondet_string();
-
-  while (nondet_int()) {
-    s[i++] = "0123456789ABCDEF"[nondet_int() % 16];
-  }
-}

infer/tests/codetoanalyze/cpp/racerd/unique_lock.cpp

@@ -13,75 +13,110 @@ class UniqueLock {
  public:
   UniqueLock() {}
 
-  void set(int new_value) {
+  int well_guarded1_ok(int b, int new_value) {
-    std::unique_lock<std::mutex> g(mutex_);
+    if (b) {
-    well_guarded1 = new_value;
+      std::unique_lock<std::mutex> g(mutex_);
-    suspiciously_read1 = new_value;
+      well_guarded1 = new_value;
-    g.unlock();
+      return 0;
-    not_guarded1 = new_value;
+    } else {
-    suspiciously_written1 = new_value;
+      std::lock_guard<std::mutex> lock(mutex_);
+      return well_guarded1;
+    }
   }
 
-  void set2(int new_value) {
+  int well_guarded2_deferred_ok(int b, int new_value) {
-    std::unique_lock<std::mutex> g(mutex_, std::defer_lock);
+    if (b) {
-    not_guarded2 = new_value;
+      std::unique_lock<std::mutex> g(mutex_, std::defer_lock);
-    suspiciously_written2 = new_value;
+      g.lock();
-    g.lock();
+      well_guarded2 = new_value;
-    well_guarded2 = new_value;
+      g.unlock();
-    suspiciously_read2 = new_value;
+      return 0;
-    g.unlock();
+    } else {
+      std::unique_lock<std::mutex> g(mutex_);
+      return well_guarded2;
+    }
   }
 
-  int get1() {
+  int not_guarded1_ok(int b, int new_value) {
-    int result;
+    if (b) {
-    std::lock_guard<std::mutex> lock(mutex_);
+      not_guarded1 = new_value;
-    result = well_guarded1;
+      return 0;
-    return result + well_guarded2;
+    } else {
+      return not_guarded1;
+    }
   }
 
-  int get2() {
+  int not_guarded2_ok(int b, int new_value) {
-    int result;
+    if (b) {
-    std::lock_guard<std::mutex> lock(mutex_);
+      std::unique_lock<std::mutex> g(mutex_);
-    result = suspiciously_written1;
+      g.unlock();
-    return result + suspiciously_written2;
+      not_guarded2 = new_value;
+      return 0;
+    } else {
+      std::unique_lock<std::mutex> g(mutex_);
+      g.unlock();
+      return not_guarded2;
+    }
   }
 
-  int get3() {
+  int suspiciously_read1_bad(int b, int new_value) {
-    int result = not_guarded1;
+    if (b) {
-    return result + not_guarded2;
+      std::unique_lock<std::mutex> g(mutex_);
+      suspiciously_read1 = new_value;
+      return 0;
+    } else {
+      return suspiciously_read1;
+    }
   }
 
-  int get4() {
+  int suspiciously_written_ok(int b, int new_value) {
-    int result = suspiciously_read1;
+    if (b) {
-    return result + suspiciously_read2;
+      suspiciously_written = new_value;
+      return 0;
+    } else {
+      std::unique_lock<std::mutex> g(mutex_);
+      return suspiciously_written;
+    }
   }
 
-  int get5() {
+  int suspiciously_read2_trylock_bad(int b, int new_value) {
-    std::unique_lock<std::mutex> lock(mutex_, std::try_to_lock);
+    if (b) {
-    if (lock.owns_lock()) {
+      std::unique_lock<std::mutex> g(mutex_);
-      return well_guarded1;
+      suspiciously_read2 = new_value;
+      return 0;
     } else {
-      return suspiciously_read1;
+      std::unique_lock<std::mutex> lock(mutex_, std::try_to_lock);
+      if (lock.owns_lock()) {
+        return 0;
+      } else {
+        return suspiciously_read2;
+      }
     }
   }
 
-  int get6() {
+  int suspiciously_read3_deferlock_bad(int b, int new_value) {
-    std::unique_lock<std::mutex> lock(mutex_, std::defer_lock);
+    if (b) {
-    if (lock.try_lock()) {
+      std::unique_lock<std::mutex> g(mutex_);
-      return well_guarded1;
+      suspiciously_read3 = new_value;
+      return 0;
     } else {
-      return suspiciously_read1;
+      std::unique_lock<std::mutex> lock(mutex_, std::defer_lock);
+      if (lock.try_lock()) {
+        return 0;
+      } else {
+        return suspiciously_read3;
+      }
     }
   }
 
  private:
   int well_guarded1;
-  int suspiciously_read1;
-  int suspiciously_written1;
-  int not_guarded1;
   int well_guarded2;
+  int suspiciously_read1;
   int suspiciously_read2;
-  int suspiciously_written2;
+  int suspiciously_read3;
+  int suspiciously_written;
+  int not_guarded1;
   int not_guarded2;
   std::mutex mutex_;
 };

infer/tests/codetoanalyze/cpp/racerd/variadic.cpp

@@ -1,28 +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 <cstdarg>
-#include <cstdio>
-
-double average(int count, ...) {
-  va_list ap;
-  int j;
-  double sum = 0;
-
-  va_start(ap,
-           count); /* Requires the last fixed parameter (to get the address) */
-  for (j = 0; j < count; j++) {
-    sum += va_arg(ap, int); /* Increments ap to the next argument. */
-  }
-  va_end(ap);
-
-  return sum / count;
-}
-
-int main(int argc, char const* argv[]) {
-  printf("%f\n", average(3, 1, 2, 3));
-  return 0;
-}

infer/tests/codetoanalyze/cpp/racerd/without_mutex.cpp

@@ -12,14 +12,14 @@ class WithoutMutex {
  public:
   WithoutMutex() {}
 
-  int get() { return field_1; }
+  int get_bad() { return field; }
 
-  int set(std::mutex& mutex, int data) {
+  int set_bad(std::mutex& mutex, int data) {
     std::lock_guard<std::mutex> lock(mutex);
-    field_1 = data;
+    field = data;
   }
 
  private:
-  int field_1;
+  int field;
 };
 } // namespace without_mutex

infer/tests/codetoanalyze/objcpp/racerd/Ctor.mm

@@ -9,7 +9,7 @@
 
 @interface Ctor : NSObject
 - (instancetype)init;
-- (void)write:(int)data;
+- (void)write_ok:(int)data;
 @end
 
 @implementation Ctor {
@@ -27,7 +27,7 @@
   return self;
 }
 
-- (void)write:(int)data {
+- (void)write_ok:(int)data {
   _mutex.lock();
   _data = data;
   _mutex.unlock();

infer/tests/codetoanalyze/objcpp/racerd/CtorInherit.mm

@@ -21,7 +21,7 @@
   return self;
 }
 
-- (void)writeZero {
+- (void)write_zero_ok {
   [self write:0];
 }
 @end