有趣的BUG

环境:

Linux version 4.14.0_1-0-0-17 (root@xxxxx) (gcc version 4.8.2 20140120 (Red Hat 4.8.2-16) (GCC)) #1 SMP Tue Mar 10 19:33:18 CST 2020
GLIBC: libc-2.21.so
GCC: gcc-8.2.0

CENTOS VERSION:

LSB Version:	:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID:	CentOS
Description:	CentOS release 6.3 (Final)
Release:	6.3
Codename:	Final

#include <iostream>
#include <string>

using namespace std;

int anss () {
    static std::string ans = "prefix";
    static std::string ans2 = "quit";
    cout << ans << " " << ans2 << std::endl;
    return 0;
}

class ANS{
public:
    ~ANS() {
        anss();
    }
};

ANS ans;

int main()
{
    anss();
    return 0;
}

这类问题的一些解决方法:

https://www.tylinux.com/post/fix-a-react-native-crash-on-mutex/

问题的原理:

https://www.cnblogs.com/william-cheung/p/4831085.html
https://wiki.osdev.org/C++#GCC