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std::abort

STD：中止

Defined in header ​​
void abort(​(until C++11)
[noreturn] void abort(​(since C++11)

导致异常程序终止，除非SIGABRT被传递给信号的信号处理程序捕获，而处理程序不返回。

具有自动、线程本地和静态变量的析构函数储存期限都不叫。传递给std::atexit()也不叫。是否关闭文件等开放资源是实现定义的。将实现定义状态返回给表示执行失败的主机环境。

参数

%280%29

返回值

%280%29

例外

(none)(until C++11)
noexcept specification: noexcept(since C++11)

例

二次

#include <csignal>
#include <iostream>
#include <cstdlib>
 
class Tester {
public:
    Tester()  { std::cout << "Tester ctor\n"; }
    ~Tester() { std::cout << "Tester dtor\n"; }
};
 
Tester static_tester; // Destructor not called
 
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; // Destructor not called
 
    // Setup handler
    auto previous_handler = std::signal(SIGABRT, signal_handler
    if (previous_handler == SIG_ERR) {
        std::cerr << "Setup failed\n";
        return EXIT_FAILURE;
    }
 
    std::abort(  // Raise SIGABRT
    std::cout << "This code is unreachable\n";
}

二次

产出：

二次

Tester ctor
Tester ctor
SIGABRT received

二次

另见

exitcauses normal program termination with cleaning up (function)
atexitregisters a function to be called on std::exit() invocation (function)
quick_exit (C++11)causes quick program termination without completely cleaning up (function)
signalsets a signal handler for particular signal (function)

c中止的文件

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