Is it possible to completely disable the default C++ new operator?

Question

Because our app has hard performance and memory constraints, our coding standards forbid the use of the default heap — ie, no malloc, no default new

Answer 1

If your own "new" operator is not named "new" but differently (e.g. "myNew") you could use a "#define" in a way replacing "new" by rubbish:

#define new *+-/&

The pre-compiler would now replace a "new":

x = new mytype;

By the rubbish:

x = *+-/& mytype;

The advantage compared to a message at linking time is that this will generating a compiler message immediately while compiling the C++ file, not in the end when linking. You also see the line where the "new" is located.

The disadvantage is that you'll have to "#include" the file containing this "#define" in all C++ files in your project.