In the below code I am trying to parse 01/01/0000 this seems to give different results on different machines.

Is 01/01/0000 undefined behaviour in strptime implementation?

#include <iostream>
#include <sstream>
#include <ctime>

int main() {
    struct tm tm{};
    std::string s("01/01/0000");
    if (strptime(s.c_str(), "%d/%m/%Y", &tm)) {
        int d = tm.tm_mday,
            m = tm.tm_mon + 1,
            y = tm.tm_year + 1900;
        std::cout << y << "-" << m << "-" << d << " "
                  << tm.tm_hour << ":" << tm.tm_min;
    }
}

On cpp.sh:
Code: link
Output: 1900-1-1 0:0

On Linux local machine:
Output is: 0-1-1 0:0