clang/test/Analysis/Checkers/WebKit/call-args-counted-const-member.cpp

// RUN: %clang_analyze_cc1 -analyzer-checker=alpha.webkit.UncountedCallArgsChecker -verify %s

#include "mock-types.h"

namespace std {
}

namespace call_args_const_refptr_member {

class Foo {
public:
  Foo();
  void bar();

private:
  const RefPtr<RefCountable> m_obj1;
  RefPtr<RefCountable> m_obj2;
};

void Foo::bar() {
  m_obj1->method();
  m_obj2->method();
  // expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
}

} // namespace call_args_const_refptr_member

namespace call_args_const_ref_member {

class Foo {
public:
  Foo();
  void bar();
  RefCountable& obj1() const { return m_obj1; }

private:
  const Ref<RefCountable> m_obj1;
  Ref<RefCountable> m_obj2;
};

void Foo::bar() {
  m_obj1->method();
  m_obj2->method();
  // expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
  obj1().method();
}

} // namespace call_args_const_ref_member

namespace call_args_const_unique_ptr {

class Foo {
public:
  Foo();
  void bar();

  RefCountable& ensureObj3() {
    if (!m_obj3)
      const_cast<std::unique_ptr<RefCountable>&>(m_obj3) = RefCountable::makeUnique();
    return *m_obj3;
  }

  RefCountable& badEnsureObj4() {
    if (!m_obj4)
      const_cast<std::unique_ptr<RefCountable>&>(m_obj4) = RefCountable::makeUnique();
    if (auto* next = m_obj4->next())
      return *next;
    return *m_obj4;
  }

  RefCountable* ensureObj5() {
    if (!m_obj5)
      const_cast<std::unique_ptr<RefCountable>&>(m_obj5) = RefCountable::makeUnique();
    if (m_obj5->next())
      return nullptr;
    return m_obj5.get();
  }

private:
  const std::unique_ptr<RefCountable> m_obj1;
  std::unique_ptr<RefCountable> m_obj2;
  const std::unique_ptr<RefCountable> m_obj3;
  const std::unique_ptr<RefCountable> m_obj4;
  const std::unique_ptr<RefCountable> m_obj5;
};

void Foo::bar() {
  m_obj1->method();
  m_obj2->method();
  // expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
  ensureObj3().method();
  badEnsureObj4().method();
  // expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
  ensureObj5()->method();
}

} // namespace call_args_const_unique_ptr

namespace call_args_const_unique_ref {

class Foo {
public:
  Foo();
  void bar();
  RefCountable& obj1() { return m_obj1; }

private:
  const UniqueRef<RefCountable> m_obj1;
  UniqueRef<RefCountable> m_obj2;
};

void Foo::bar() {
  m_obj1->method();
  m_obj2->method();
  // expected-warning@-1{{Call argument for 'this' parameter is uncounted and unsafe}}
  obj1().method();
}

} // namespace call_args_const_unique_ref