std::abort

#include <csignal>
#include <iostream>
#include <cstdlib>
 
class Tester {
public:
    Tester()  { std::cout << "Tester ctor\n"; }
    ~Tester() { std::cout << "Tester dtor\n"; }
};
 
Tester static_tester; // 不调用析构函数
 
void signal_handler(int signal) 
{
    if (signal == SIGABRT) {
        std::cerr << "SIGABRT received\n";
    } else {
        std::cerr << "Unexpected signal " << signal << " received\n";
    }
    std::_Exit(EXIT_FAILURE);
}
 
int main()
{
    Tester automatic_tester; // 不调用析构函数
 
    // 安装处理函数
    auto previous_handler = std::signal(SIGABRT, signal_handler);
    if (previous_handler == SIG_ERR) {
        std::cerr << "Setup failed\n";
        return EXIT_FAILURE;
    }
 
    std::abort();  // 引发 SIGABRT
    std::cout << "This code is unreachable\n";
}