| // RUN: %clang_cc1 -std=c++2a -verify %s |
| |
| namespace std_example { |
| namespace std { template<typename T> T &&move(T &); } |
| |
| void g(...); |
| |
| template <class... Args> void f(Args... args) { |
| auto lm = [&, args...] { return g(args...); }; |
| lm(); |
| |
| auto lm2 = [... xs = std::move(args)] { return g(xs...); }; |
| lm2(); |
| } |
| } |
| |
| template<typename ...T> constexpr int f(int k, T ...t) { |
| auto a = [...v = t] (bool b) mutable { |
| if (!b) { |
| ((v += 1), ...); |
| return (__SIZE_TYPE__)0; |
| } |
| return (v * ... * 1) + sizeof...(v); |
| }; |
| for (int i = 0; i != k; ++i) |
| a(false); |
| return a(true); |
| } |
| |
| static_assert(f(1, 2, 3, 4) == 3 * 4 * 5 + 3); |
| static_assert(f(5) == 1); |
| |
| auto q = [...x = 0] {}; // expected-error {{does not contain any unexpanded parameter packs}} |
| |
| template<typename ...T> constexpr int nested(T ...t) { |
| return [...a = t] { |
| return [a...] { |
| return (a + ...); |
| }(); |
| }(); |
| } |
| static_assert(nested(1, 2, 3) == 6); |