void Newx(void* ptr, int nitems, type) void* safemalloc(size_t size) void* Renewc( void *ptr, int size, type, cast ) void Safefree(void* ptr) Newx(message,1,EdjeMessageStringSet); // allocate space for 1 EdjeMessageStringSet // this is enough for just 1 pointer to char // i.e. ok if count==1 // memory is not initialized. Renewc(message,count+2, char*, EdjeMessageStringSet); // Leak some memory from the heap. // Allocate enough space for count+2 char* // copy contents of memory from previous Newx() operation // to this newly allocated memory // Then throw pointer to this new memory away // For extra confusion, also calls "free" on the original pointer!! if (message == NULL) croak("Failed to allocate memory in _new function\n"); // Of course should have checked this after the Newx().