Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp1y/lambda-conv2.C @ 152:2b5abeee2509
update gcc11
author | anatofuz |
---|---|
date | Mon, 25 May 2020 07:50:57 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/71105 // { dg-do compile { target c++14 } } template <typename T> T declval(); template <typename, typename> struct is_same { static constexpr bool value = false; }; template <typename T> struct is_same<T, T> { static constexpr bool value = true; }; template <class F> struct indirected : F { indirected(F f) : F(f) {} template <class I> auto operator()(I i) -> decltype(declval<F&>()(*i)) { return static_cast<F&>(*this)(*i); } }; int main() { auto f = [=](auto i) { return i + i; }; auto i = indirected<decltype(f)>{f}; static_assert(is_same<decltype(i(declval<int*>())), int>::value, ""); }