Exceptional C++ Style 40 New Engineering Puzzles, Programming Problems, and Solutions

Chapter 22. To new, Perchance to throw, Part 1: The Many Faces of new

Difficulty: 4

Any class that provides its own class-specific operator new, or operator new[], should also provide corresponding class-specific versions of plain new, in-place new, and nothrow new. Doing otherwise can cause needless problems for people trying to use your class.

JG Question

1. What are the three forms of new provided in the C++ standard?

Guru Question

1. What is class-specific new, and how do you make use of it? Describe any areas where you need to take particular care when providing your own class-specific new and delete.

2. In the following code, which operator new is invoked for each of the lines numbered 1 through 4?

    class Base { public: static void* operator new(std::size_t, ...