throwing std::function on MSVC is dangerous, C++ (vc++)

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//Microsoft (R) C/C++ Optimizing Compiler Version 19.00.23506 for x64

#include <stdexcept>
#include <exception>
#include <stdio.h>
#include <functional>

struct Int {
    std::function<int()> f_;
    explicit Int(int i) : f_([i]() { return i; }) {}
    explicit operator int() const { return f_(); }
    Int(Int&& x) : Int(int(x)) { puts("Int is being move-constructed"); }
    Int(const Int&) = delete;
    Int& operator=(const Int&) = delete;
    Int& operator=(Int&&) = delete;
    ~Int() { puts("Int is being destroyed"); }
};

using T = Int;

int main()
{
    try {
        throw T(42);
    } catch (T& i) {
        printf("&i = %p (%d)\n", &i, int(i));
        fflush(stdout);
        try {
            throw;
        } catch (T& i) {
            printf("after throw; &i = %p (%d)\n", &i, int(i));
            fflush(stdout);
            try {
                throw;
            } catch (T& i) {
                printf("after throw; &i = %p (%d)\n", &i, int(i));
                fflush(stdout);
                try {
                    auto ex = std::current_exception();
                    std::rethrow_exception(ex);
                } catch (T& i) {
                    printf("after exception_ptr; &i = %p (%d)\n", &i, int(i));
                    fflush(stdout);
                    try {
                        auto ex = std::current_exception();
                        std::rethrow_exception(ex);
                    } catch (T& i) {
                        printf("after exception_ptr; &i = %p (%d)\n", &i, int(i));
                        fflush(stdout);
                    }
                }
            }
        }
    }
}

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Compilation time: 1,52 sec, absolute running time: 0,32 sec, absolute service time: 1,85 sec