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comparison gcc/testsuite/g++.dg/cpp1y/lambda-generic-x.C @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children
comparison
equal deleted inserted replaced
111:04ced10e8804 131:84e7813d76e9
4 4
5 #include <iostream> 5 #include <iostream>
6 6
7 int main() 7 int main()
8 { 8 {
9 auto glambda = [] <typename A, typename B> (A a, B&& b) { return a < b; }; // { dg-warning "does not support lambda templates" } 9 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 } }
10 bool b = glambda(3, 3.14); // OK 10 bool b = glambda(3, 3.14); // OK
11 auto vglambda = [] <typename P> (P printer) { // { dg-warning "does not support lambda templates" } 11 auto vglambda = [] <typename P> (P printer) { // { dg-warning "lambda templates are only available with" "" { target c++17_down } }
12 return [=] <typename... T> (T&& ... ts) { // OK: ts is a function parameter pack 12 return [=] <typename... T> (T&& ... ts) { // OK: ts is a function parameter pack
13 printer(std::forward<decltype(ts)>(ts)...); // { dg-warning "does not support lambda templates" "" { target *-*-* } .-1 } 13 printer(std::forward<decltype(ts)>(ts)...); // { dg-warning "lambda templates are only available with" "" { target c++17_down } .-1 }
14 return [=]() { 14 return [=]() {
15 printer(ts ...); 15 printer(ts ...);
16 }; 16 };
17 }; 17 };
18 }; 18 };
19 auto p = vglambda( [] <typename A, // { dg-warning "does not support lambda templates" } 19 auto p = vglambda( [] <typename A, // { dg-warning "lambda templates are only available with" "" { target c++17_down } }
20 typename B, 20 typename B,
21 typename C> (A v1, B v2, C v3) 21 typename C> (A v1, B v2, C v3)
22 { std::cout << v1 << v2 << v3; } ); 22 { std::cout << v1 << v2 << v3; } );
23 auto q = p(1, 'a', 3.14); // OK: outputs 1a3.14 23 auto q = p(1, 'a', 3.14); // OK: outputs 1a3.14
24 q(); // OK: outputs 1a3.14 24 q(); // OK: outputs 1a3.14