What does this C++ snippet output?

1#include <iostream>
2#include <vector>
3struct Logger { virtual void log() { std::cout << "base\n"; } };
4struct FileLogger : Logger { void log() override { std::cout << "file\n"; } };
5int main() {
6    std::vector<Logger*> v = { new Logger(), new FileLogger() };
7    for (auto l : v) l->log();
8    for (auto l : v) delete l;
9}