Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp1y/lambda-generic-x.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// Explicit generic lambda test from N3690 5.1.2.5 // { dg-do compile { target c++14 } } // { dg-options "-Wpedantic" } #include <iostream> int main() { auto glambda = [] <typename A, typename B> (A a, B&& b) { return a < b; }; // { dg-warning "lambda templates are only available with" "" { target c++17_down } } bool b = glambda(3, 3.14); // OK auto vglambda = [] <typename P> (P printer) { // { dg-warning "lambda templates are only available with" "" { target c++17_down } } return [=] <typename... T> (T&& ... ts) { // OK: ts is a function parameter pack printer(std::forward<decltype(ts)>(ts)...); // { dg-warning "lambda templates are only available with" "" { target c++17_down } .-1 } return [=]() { printer(ts ...); }; }; }; auto p = vglambda( [] <typename A, // { dg-warning "lambda templates are only available with" "" { target c++17_down } } typename B, typename C> (A v1, B v2, C v3) { std::cout << v1 << v2 << v3; } ); auto q = p(1, 'a', 3.14); // OK: outputs 1a3.14 q(); // OK: outputs 1a3.14 }