dangling_ref_closure_no_move_capture.cpp

// g++ main.cpp -std=c++17 -W -Wall -pedantic

#include <cstdlib>
#include <cstdint>
#include <functional>

auto foo() -> std::function<void ()> {
  int32_t a = 317;

  return [&a]() {
      printf("%d", a);
  };
}

auto foo_move() -> std::function<void ()> {
  int32_t a = 317;

  return [&a]() {
      printf("%d", a);
  };
}

int main() {
  auto closure = foo();

  closure();

  return 0;
}