// { dg-do run { target c++11 } }
#include <cassert>
template<typename F>
void call(const F& f) { f(); }
int main() {
  call([] () -> void {});
  //call([] () mutable -> void {}); // { dg-error: "`f' does not have const `operator()'" }
  int i = -1;
  call([&i] () -> void { i = 0; });
  assert(i == 0);
  //call([i] () -> void { i = 0; }); // { dg-error: "assignment to non-reference capture in const lambda" }
  return 0;
}