зеркало из https://github.com/microsoft/clang.git
101 строка
2.6 KiB
C++
101 строка
2.6 KiB
C++
// RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks %s
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// RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing %s -DDELAYED_TEMPLATE_PARSING
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// RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fms-extensions %s -DMS_EXTENSIONS
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// RUN: %clang_cc1 -std=c++1y -verify -fsyntax-only -fblocks -fdelayed-template-parsing -fms-extensions %s -DMS_EXTENSIONS -DDELAYED_TEMPLATE_PARSING
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namespace explicit_argument_variadics {
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template<class ... Ts> void print(Ts ... ) { }
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struct X { };
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struct Y { };
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struct Z { };
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int test() {
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{
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auto L = [](auto ... as) { };
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L.operator()<bool>(true);
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}
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{
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auto L = [](auto a) { };
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L.operator()<bool>(false);
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}
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{
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auto L = [](auto a, auto b) { };
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L.operator()<bool>(false, 'a');
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}
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{
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auto L = [](auto a, auto b) { };
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L.operator()<bool, char>(false, 'a');
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}
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{
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auto L = [](auto a, auto b, auto ... cs) { };
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L.operator()<bool, char>(false, 'a');
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L.operator()<bool, char, const char*>(false, 'a', "jim");
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}
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{
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auto L = [](auto ... As) {
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};
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L.operator()<bool, double>(false, 3.14, "abc");
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}
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{
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auto L = [](auto A, auto B, auto ... As) {
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};
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L.operator()<bool>(false, 3.14, "abc");
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L.operator()<bool, char>(false, 3.14, "abc"); //expected-warning{{implicit conversion}}
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L.operator()<X, Y, bool, Z>(X{}, Y{}, 3.14, Z{}, X{}); //expected-warning{{implicit conversion}}
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}
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{
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auto L = [](auto ... As) {
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print("\nL::As = ", As ...);
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return [](decltype(As) ... as, auto ... Bs) {
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print("\nL::Inner::as = ", as ...);
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print("\nL::Inner::Bs = ", Bs ...);
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return 4;
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};
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};
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auto M = L.operator()<bool, double>(false, 3.14, "abc");
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M(false, 6.26, "jim", true);
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M.operator()<bool>(true, 6.26, "jim", false, 3.14);
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}
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{
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auto L = [](auto A, auto ... As) {
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print("\nL::As = ", As ...);
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return [](decltype(As) ... as, decltype(A) a, auto ... Bs) {
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print("\nL::Inner::as = ", as ...);
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print("\nL::Inner::Bs = ", Bs ...);
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return 4;
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};
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};
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auto M = L.operator()<bool, double>(false, 3.14, "abc");
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M(6.26, "jim", true);
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M.operator()<X>(6.26, "jim", false, X{}, Y{}, Z{});
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}
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return 0;
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}
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int run = test();
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} // end ns explicit_argument_extension
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#ifdef PR18499_FIXED
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namespace variadic_expansion {
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void f(int &, char &);
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template <typename ... T> void g(T &... t) {
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f([&a(t)]()->decltype(auto) {
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return a;
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}() ...);
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f([&a(f([&b(t)]()->decltype(auto) { return b; }()...), t)]()->decltype(auto) {
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return a;
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}()...);
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}
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void h(int i, char c) { g(i, c); }
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}
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#endif
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