void test() {
int i = 0;
const int k = 0;
auto captures_nothing = [] {};
auto captures_nothing_by_value = [=] {};
auto captures_nothing_by_reference = [&] {};
auto implicit_by_value = [=]() mutable { i++; };
auto implicit_by_reference = [&] { i++; };
auto explicit_by_value_used = [i] { return i + 1; };
auto explicit_by_value_used_void = [i] { (void)i; };
auto explicit_by_value_unused = [i] {}; // expected-warning{{lambda capture 'i' is not used}}
auto explicit_by_value_unused_sizeof = [i] { return sizeof(i); }; // expected-warning{{lambda capture 'i' is not required to be captured for this use}}
auto explicit_by_value_unused_decltype = [i] { decltype(i) j = 0; }; // expected-warning{{lambda capture 'i' is not required to be captured for this use}}
auto explicit_by_value_unused_const = [k] { return k + 1; }; // expected-warning{{lambda capture 'k' is not required to be captured for this use}}
auto explicit_by_reference_used = [&i] { i++; };
auto explicit_by_reference_unused = [&i] {}; // expected-warning{{lambda capture 'i' is not used}}
auto explicit_initialized_reference_used = [&j = i] { return j + 1; };
auto explicit_initialized_reference_unused = [&j = i]{}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_used = [j = 1] { return j + 1; };
auto explicit_initialized_value_unused = [j = 1] {}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_non_trivial_constructor = [j = NonTrivialConstructor()]{};
auto explicit_initialized_value_non_trivial_destructor = [j = NonTrivialDestructor()]{};
auto explicit_initialized_value_trivial_init = [j = Trivial()]{}; // expected-warning{{lambda capture 'j' is not used}}
auto explicit_initialized_value_non_trivial_init = [j = Trivial(42)]{};
auto explicit_initialized_value_with_side_effect = [j = side_effect()]{};
auto nested = [&i] {
auto explicit_by_value_used = [i] { return i + 1; };
auto explicit_by_value_unused = [i] {}; // expected-warning{{lambda capture 'i' is not used}}
};
Trivial trivial;
auto explicit_by_value_trivial = [trivial] {}; // expected-warning{{lambda capture 'trivial' is not used}}
NonTrivialConstructor cons;
auto explicit_by_value_non_trivial_constructor = [cons] {}; // expected-warning{{lambda capture 'cons' is not used}}
NonTrivialCopyConstructor copy_cons;
auto explicit_by_value_non_trivial_copy_constructor = [copy_cons] {};
NonTrivialDestructor dest;
auto explicit_by_value_non_trivial_destructor = [dest] {};
volatile int v;
auto explicit_by_value_volatile = [v] {};
}
int main(int argc, char ** argv)
{
PDEBUG("Debug message %d\n", side_effect(42));
std::cout << "Hello world!\n";
}
uint32_t foo(uint32_t x) {
uint32_t b = x;
side_effect(&b);
return side_effect(&b);
}
