Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts3.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// { dg-do compile { target c++2a } } template <class T, class U> concept same_as = __is_same_as(T,U); template<typename T> concept C1 = requires (T& t) { // { dg-message "in requirements" } t.~T(); }; template<typename T> concept C2 = requires (T& t) { // { dg-message "in requirements" } { t.~T() } -> same_as<void>; }; template<typename T> concept C3 = requires { // { dg-message "in requirements" } typename T::type; }; class S1 { ~S1() { } using type = int; }; void driver() { static_assert(C1<S1>, ""); // { dg-error "static assertion failed" } static_assert(C2<S1>, ""); // { dg-error "static assertion failed" } static_assert(C3<S1>, ""); // { dg-error "static assertion failed" } } template<typename T> requires C1<T> void f1() { } template<typename T> requires C2<T> void f2() { } template<typename T> requires C3<T> void f3() { } void driver2() { f1<S1>(); // { dg-error "unsatisfied|is private" } f2<S1>(); // { dg-error "unsatisfied|is private" } f3<S1>(); // { dg-error "unsatisfied|is private" } }