attachments->audio_message->link_ogg
#include <cstdio>
class tag;
template<class>
struct type { friend constexpr auto get(type); };
template<class TKey, class TValue>
struct set { friend constexpr auto get(TKey) { return TValue{}; } };
void foo() {
if constexpr(false) {
if (false) {
constexpr auto call = [](auto value) { std::printf("called %d", value); };
void(set<type<tag>, decltype(call)>{});
}
}
}
int main() {
get(type<tag>{})(42);
}