Valgrind shows std::vector<> times of alloc is more than free, but no memory leak

Question

The code is fairly simple:

#include 
int main() {
    std::vector v;
}

Then I build and run it with Valgrind:

Answer 1

(1) A properly implemented default constructed std::vector doesn't allocate. Esp not 72k. Try running with --leak-check=full --track-origins=yes , perhaps it shows the origin of the allocation

(2) It says it, see: still reachable. The memory is not (yet) leaked, since there's still a handle (e.g: a pointer) pointing to it.

(3) It is the process id of the application.