Forking process should throw error

[Anon-136]

Since multiprocess is not allowed in competitive programming, it should throw an error if submit the following code.

#include <unistd.h>
using namespace std;
int main() {
    while (true) fork();
    return 0;
}

• If we use "isolate", it will keep running and get a T instead of an X.
• If we doesn't use it, the grader process will be down because it doesn't handle the case.

[Nepumi-Jr]

When using an Isolate, it can limiting the process. And calling fork() I think it impossible to get Runtime error X because Isolate won't make program terminate with magic exit code but when it will return some int in fork() instead. Which mean that code just a while(true).

However I don't think this code get T is not good as X, so... If it have solution, I'll update it ASAP. or do you have any suggestion?