C++ Language/Objects/Constructors/MemoryFull

The C language's malloc() returned NULL if memory was full when that allocation was attempted.

C++'s CRType* poObj = new CRType; instead throws a std::bad_alloc exception.

Alternatively, you could use std::set_new_handler() to specify a callback that will be repeatedly called until enough memory is available.

Additional information about memory being full