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78 lines
1.3 KiB
78 lines
1.3 KiB
/*
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* Copyright (c) 2017 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#include <string>
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class A {
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public:
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int* ptr;
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std::string a_name;
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std::string* p_a_name;
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int i;
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A() {} // user defined default constructor.
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// Does not initialize i so, it gets random value
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};
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class B {
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public:
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std::string a_name;
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int i;
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// No user defined default constructor.
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// If default constructor is called i is initialized.
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};
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int access_members_bad() {
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A a;
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std::string n = a.a_name;
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int i = a.i; // error
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return 0;
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};
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int access_members_bad2() {
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A a{};
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std::string n = a.a_name;
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int i = a.i; // error
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return 0;
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};
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int access_members_ok() {
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B b{}; // call default implicit constructor which initialize i.
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std::string n = b.a_name;
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int i = b.i;
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return 0;
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};
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int access_members_bad3() {
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B b; // no constructor is called
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std::string n = b.a_name;
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int i = b.i;
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return 0;
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};
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int access_pointer_members_bad() {
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A a;
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int* p = a.ptr;
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int i = a.i;
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std::string* pn = a.p_a_name;
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return 0;
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};
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