Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp1y/lambda-generic-dep.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// Generic lambda type dependence test part from N3690 5.1.2.12 // { dg-do compile { target c++14 } } // { dg-options "-pedantic" } void f(int, const int (&)[2] = {}) { } // #1 void f(const int&, const int (&)[1]) { } // #2 void test() { const int x = 17; auto g = [](auto a) { f(x); // OK: calls #1, does not capture x }; auto g2 = [=](auto a) { int selector[sizeof(a) == 1 ? 1 : 2]{}; f(x, selector); // OK: is a dependent expression, so captures x }; } struct S { struct N { auto test () { return 7.f; } }; }; #include <utility> int main() { auto f = [] <typename T> (T const& s) mutable { // { dg-warning "lambda templates are only available with" "" { target c++17_down } } typename T::N x; return x.test (); }; auto g = [] (auto const& s) { typename std::decay<decltype (s)>::type::N x; return x.test (); }; S i; f(i); g(i); }