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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/memory/ref_counted.h"
#include "base/memory/ref_counted_delete_on_sequence.h"
namespace base {
class Base : public RefCounted<Base> {
private:
friend class RefCounted<Base>;
~Base() = default;
};
class ThreadSafeBase : public RefCountedThreadSafe<ThreadSafeBase> {
private:
friend class RefCountedThreadSafe<ThreadSafeBase>;
~ThreadSafeBase() = default;
};
class DeleteOnSequenceBase
: public RefCountedDeleteOnSequence<DeleteOnSequenceBase> {
private:
friend class RefCountedDeleteOnSequence<DeleteOnSequenceBase>;
friend class DeleteHelper<DeleteOnSequenceBase>;
~DeleteOnSequenceBase() = default;
};
void AdoptRefToZeroStart() {
class InitialRefCountIsZero : public RefCounted<InitialRefCountIsZero> {
public:
InitialRefCountIsZero() = default;
private:
friend class RefCounted<InitialRefCountIsZero>;
~InitialRefCountIsZero() = default;
};
AdoptRef(new InitialRefCountIsZero()); // expected-error@*:* {{Use AdoptRef only if the reference count starts from one.}}
}
void WrongRefcountBaseClass() {
class Derived : public RefCounted<Base> {
private:
friend class RefCounted<Derived>;
~Derived() = default;
};
scoped_refptr<Derived> ptr; // expected-error@*:* {{T implements RefCounted<U>, but U is not a base of T.}}
}
void WrongRefcountThreadsafeBaseClass() {
class Derived : public RefCountedThreadSafe<ThreadSafeBase> {
private:
friend class RefCountedThreadSafe<Derived>;
~Derived() = default;
};
scoped_refptr<Derived> ptr; // expected-error@*:* {{T implements RefCountedThreadSafe<U>, but U is not a base of T.}}
}
void WrongRefcountDeleteOnSequenceBaseClass() {
class DeleteOnSequenceDerived
: public RefCountedDeleteOnSequence<DeleteOnSequenceBase> {
private:
friend class RefCountedDeleteOnSequence<DeleteOnSequenceDerived>;
friend class DeleteHelper<DeleteOnSequenceDerived>;
~DeleteOnSequenceDerived() = default;
};
scoped_refptr<DeleteOnSequenceDerived> ptr; // expected-error@*:* {{T implements RefCountedDeleteOnSequence<U>, but U is not a base of T.}}
}
void SubclassOverridesRefcountPreference() {
class Derived : public Base {
public:
REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
};
scoped_refptr<Derived> ptr; // expected-error@*:* {{It's unsafe to override the ref count preference. Please remove REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE from subclasses.}}
}
void SubclassOverridesRefcountPreferenceThreadsafe() {
class Derived : public ThreadSafeBase {
public:
REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
};
scoped_refptr<Derived> ptr; // expected-error@*:* {{It's unsafe to override the ref count preference. Please remove REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE from subclasses.}}
}
void SubclassOverridesRefcountPreferenceDeleteOnSequence() {
class Derived : public DeleteOnSequenceBase {
public:
REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE();
};
scoped_refptr<Derived> ptr; // expected-error@*:* {{It's unsafe to override the ref count preference. Please remove REQUIRE_ADOPTION_FOR_REFCOUNTED_TYPE from subclasses.}}
}
} // namespace base
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