#include <stdio.h>
#include <new>
#include <iostream>

void test_new(size_t sz)
{
	std::cout << "sz : " << sz/1024/1024 << "MiB" << std::endl;
	// try catch 使用
	{
		char* p1 = nullptr;
		char* p2 = nullptr;
		try {
			p1 = new char[sz];
		} catch (std::bad_alloc& e) {
			std::cout << "p1: " << e.what() << std::endl;
		}
		try {
			p2 = new char[sz];
		} catch (std::bad_alloc& e) {
			std::cout << "p2: " << e.what() << std::endl;
		}
		delete[] p1;
		delete[] p2;
	}
	// nothrow 使用
	{
		char* p1 = nullptr;
		char* p2 = nullptr;
		p1 = new (std::nothrow) char[sz];
		if (!p1) {
			std::cout << "p1 new failed." << std::endl;
		}
		p2 = new (std::nothrow) char[sz];
		if (!p2) {
			std::cout << "p2 new failed." << std::endl;
		}
		delete[] p1;
		delete[] p2;
	}
	std::cout << std::endl;
}

int main(int argc, char* argv[])
{
	test_new(1U << 29);
	test_new(1U << 30);
	test_new(1U << 31);
	if (sizeof(size_t) == 8) {
		test_new((size_t)(1ULL << 32));
		test_new((size_t)(1ULL << 33));
		test_new((size_t)(1ULL << 34));
		test_new((size_t)(1ULL << 35));
	}
	
	return 0;
}