Member initialization for scoped_refptr<T>::ptr_.

base/memory/ref_counted.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_MEMORY_REF_COUNTED_H_
 #define BASE_MEMORY_REF_COUNTED_H_
 
 #include <stddef.h>
 
 #include <cassert>
@@ skipping 13 matching lines @@
 namespace subtle {
 
 class BASE_EXPORT RefCountedBase {
  public:
   bool HasOneRef() const { return ref_count_ == 1; }
 
  protected:
   RefCountedBase()
       : ref_count_(0)
 #if DCHECK_IS_ON()
-      , in_dtor_(false)
+        , in_dtor_(false)
 #endif
-      {
+  {
   }
 
   ~RefCountedBase() {
 #if DCHECK_IS_ON()
     DCHECK(in_dtor_) << "RefCounted object deleted without calling Release()";
 #endif
   }
 
 
   void AddRef() const {
@@ skipping 215 matching lines @@
 //
 //     b = a;
 //     // now, |a| and |b| each own a reference to the same MyFoo object.
 //   }
 //
 template <class T>
 class scoped_refptr {
  public:
   typedef T element_type;
 
-  scoped_refptr() : ptr_(nullptr) {
-  }
+  scoped_refptr() {}
 
   scoped_refptr(T* p) : ptr_(p) {
     if (ptr_)
       AddRef(ptr_);
   }
 
   // Copy constructor.
   scoped_refptr(const scoped_refptr<T>& r) : ptr_(r.ptr_) {
     if (ptr_)
       AddRef(ptr_);
@@ skipping 89 matching lines @@
   bool operator!=(const scoped_refptr<U>& rhs) const {
     return !operator==(rhs);
   }
 
   template <typename U>
   bool operator<(const scoped_refptr<U>& rhs) const {
     return ptr_ < rhs.get();
   }
 
  protected:
-  T* ptr_;
+  T* ptr_ = nullptr;
 
  private:
   // Friend required for move constructors that set r.ptr_ to null.
   template <typename U>
   friend class scoped_refptr;
 
   // Non-inline helpers to allow:
   //     class Opaque;
   //     extern template class scoped_refptr<Opaque>;
   // Otherwise the compiler will complain that Opaque is an incomplete type.
@@ skipping 57 matching lines @@
 bool operator!=(std::nullptr_t null, const scoped_refptr<T>& rhs) {
   return !operator==(null, rhs);
 }
 
 template <typename T>
 std::ostream& operator<<(std::ostream& out, const scoped_refptr<T>& p) {
   return out << p.get();
 }
 
 #endif  // BASE_MEMORY_REF_COUNTED_H_