Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp1y/lambda-generic-87523.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | |
children |
line wrap: on
line source
// PR c++/87523 // { dg-do compile { target c++14 } } template <typename T, T v> struct my_integer_constant { constexpr my_integer_constant() {} constexpr operator T() const { return v; } constexpr T operator()() const { return v; } }; template <typename T, T... u> struct constant_call { template <typename Callback> static void call(T v, Callback f) { char dummy[sizeof...(u)] = { ( (v == u) ? (f(my_integer_constant<T, u>{}), static_cast<char>(0)) : static_cast<char>(0))... }; (void)dummy; } }; void f(bool reverse_in, bool other_bool_in) { auto helper = [&] (auto reverse_t) { bool constexpr reverse_v = reverse_t; (void)reverse_v; constant_call<bool, true, false>::call(other_bool_in, [&] (auto newb) { bool reverse_v_dyn = reverse_v; }); }; constant_call<bool, true, false>::call(reverse_in, [&] (auto reverse_t) { helper(reverse_t); }); }