Class Template auto_ptr and Arrays

The std::auto_ptr class template handles only a pointer to a single object. This is because it uses scalar delete, never delete[], to destroy the owned object. Therefore, binding auto_ptr to an array of objects would cause undefined behavior. Using of auto_ptr as a char pointer is a common mistake:

 std::auto_ptr< char> pc (new char[1000];) // bad


In this example, the auto_ptr object is bound to an array of char allocated by new[]. Such an array must be deleted with delete[]. However, because auto_ptr calls delete when its destructor executes, the program’s behavior is undefined.

Remember always to bind ats::auto_ptr to a pointer to a single object. If you’re looking for an auto_ptr that handles arrays, you can find a custom version of it at the www.boost.org site.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin

Overview

The Latest

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS