#include <vector>
#include <iostream>
#include <string>
using namespace std;
int main()
{
    auto str = std::string("XYZ"); // mutable string
    const auto& cstr(str);         // const ref to it
 
    vector<string> v;
    v.push_back(cstr);
 
    cout << v.front() << endl;  // XYZ is printed as expected
 
    *const_cast<char*>(&cstr[0])='*'; // this will modify the first element in the VECTOR (is this expected?)
    str[1]='#';  //
 
    cout << str << endl;  // prints *#Z as expected
    cout << cstr << endl; // prints *#Z as expected
    cout << v.front() << endl; // Why *YZ is printed, not XYZ and not *#Z ?
 
    return 0;
}

I2luY2x1ZGUgPHZlY3Rvcj4KI2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c3RyaW5nPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwppbnQgbWFpbigpCnsKICAgIGF1dG8gc3RyID0gc3RkOjpzdHJpbmcoIlhZWiIpOyAvLyBtdXRhYmxlIHN0cmluZwogICAgY29uc3QgYXV0byYgY3N0cihzdHIpOyAgICAgICAgIC8vIGNvbnN0IHJlZiB0byBpdAoKICAgIHZlY3RvcjxzdHJpbmc+IHY7CiAgICB2LnB1c2hfYmFjayhjc3RyKTsKCiAgICBjb3V0IDw8IHYuZnJvbnQoKSA8PCBlbmRsOyAgLy8gWFlaIGlzIHByaW50ZWQgYXMgZXhwZWN0ZWQKCiAgICAqY29uc3RfY2FzdDxjaGFyKj4oJmNzdHJbMF0pPScqJzsgLy8gdGhpcyB3aWxsIG1vZGlmeSB0aGUgZmlyc3QgZWxlbWVudCBpbiB0aGUgVkVDVE9SIChpcyB0aGlzIGV4cGVjdGVkPykKICAgIHN0clsxXT0nIyc7ICAvLwoKICAgIGNvdXQgPDwgc3RyIDw8IGVuZGw7ICAvLyBwcmludHMgKiNaIGFzIGV4cGVjdGVkCiAgICBjb3V0IDw8IGNzdHIgPDwgZW5kbDsgLy8gcHJpbnRzICojWiBhcyBleHBlY3RlZAogICAgY291dCA8PCB2LmZyb250KCkgPDwgZW5kbDsgLy8gV2h5ICpZWiBpcyBwcmludGVkLCBub3QgWFlaIGFuZCBub3QgKiNaID8KCiAgICByZXR1cm4gMDsKfQ==