1 // RUN: %clang_cc1 -std=c++2a -verify %s
2 // expected-no-diagnostics
3 
4 template<typename ...T, typename ...Lambda> void check_sizes(Lambda ...L) {
5   static_assert(((sizeof(T) == sizeof(Lambda)) && ...));
6 }
7 
8 template<typename ...T> void f(T ...v) {
9   // Pack expansion of lambdas: each lambda captures only one pack element.
10   check_sizes<T...>([=] { (void)&v; } ...);
11 
12   // Pack expansion inside lambda: captures all pack elements.
13   auto l = [=] { ((void)&v, ...); };
14   static_assert(sizeof(l) >= (sizeof(T) + ...));
15 }
16 
17 template void f(int, char, double);
18