forked from OSchip/llvm-project
478 lines
11 KiB
C++
478 lines
11 KiB
C++
// RUN: %clang_cc1 -verify -std=c++11 %s
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// RUN: %clang_cc1 -verify -std=c++11 -fdelayed-template-parsing %s
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template<typename T>
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void f0() {
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struct X;
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typedef struct Y {
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T (X::* f1())(int) { return 0; }
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} Y2;
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Y2 y = Y();
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}
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template void f0<int>();
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// PR5764
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namespace PR5764 {
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struct X {
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template <typename T>
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void Bar() {
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typedef T ValueType;
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struct Y {
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Y() { V = ValueType(); }
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ValueType V;
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};
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Y y;
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}
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};
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void test(X x) {
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x.Bar<int>();
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}
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}
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// Instantiation of local classes with virtual functions.
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namespace local_class_with_virtual_functions {
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template <typename T> struct X { };
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template <typename T> struct Y { };
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template <typename T>
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void f() {
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struct Z : public X<Y<T>*> {
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virtual void g(Y<T>* y) { }
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void g2(int x) {(void)x;}
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};
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Z z;
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(void)z;
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}
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struct S { };
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void test() { f<S>(); }
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}
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namespace PR8801 {
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template<typename T>
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void foo() {
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class X;
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typedef int (X::*pmf_type)();
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class X : public T { };
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pmf_type pmf = &T::foo;
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}
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struct Y { int foo(); };
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template void foo<Y>();
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}
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namespace TemplatePacksAndLambdas {
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template <typename ...T> int g(T...);
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struct S {
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template <typename ...T> static void f(int f = g([]{ static T t; return ++t; }()...)) {}
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};
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void h() { S::f<int, int, int>(); }
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}
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namespace PR9685 {
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template <class Thing> void forEach(Thing t) { t.func(); }
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template <typename T> void doIt() {
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struct Functor {
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void func() { (void)i; }
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int i;
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};
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forEach(Functor());
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}
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void call() {
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doIt<int>();
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}
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}
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namespace PR12702 {
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struct S {
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template <typename F> bool apply(F f) { return f(); }
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};
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template <typename> struct T {
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void foo() {
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struct F {
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int x;
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bool operator()() { return x == 0; }
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};
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S().apply(F());
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}
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};
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void call() { T<int>().foo(); }
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}
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namespace PR17139 {
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template <class T> void foo(const T &t) { t.foo(); }
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template <class F> void bar(F *f) {
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struct B {
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F *fn;
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void foo() const { fn(); }
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} b = { f };
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foo(b);
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}
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void go() {}
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void test() { bar(go); }
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}
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namespace PR17740 {
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class C {
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public:
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template <typename T> static void foo(T function);
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template <typename T> static void bar(T function);
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template <typename T> static void func(T function);
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};
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template <typename T> void C::foo(T function) { function(); }
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template <typename T> void C::bar(T function) {
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foo([&function]() { function(); });
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}
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template <typename T> void C::func(T function) {
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struct Struct {
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T mFunction;
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Struct(T function) : mFunction(function) {};
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void operator()() {
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mFunction();
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};
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};
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bar(Struct(function));
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}
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void call() {
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C::func([]() {});
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}
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}
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namespace PR14373 {
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struct function {
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template <typename _Functor> function(_Functor __f) { __f(); }
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};
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template <typename Func> function exec_func(Func f) {
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struct functor {
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functor(Func f) : func(f) {}
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void operator()() const { func(); }
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Func func;
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};
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return functor(f);
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}
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struct Type {
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void operator()() const {}
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};
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int call() {
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exec_func(Type());
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return 0;
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}
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}
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namespace PR18907 {
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template <typename>
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class C : public C<int> {}; // expected-error{{within its own definition}}
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template <typename X>
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void F() {
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struct A : C<X> {};
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}
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struct B {
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void f() { F<int>(); }
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};
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}
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namespace PR23194 {
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struct X {
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int operator()() const { return 0; }
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};
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struct Y {
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Y(int) {}
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};
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template <bool = true> int make_seed_pair() noexcept {
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struct state_t {
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X x;
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Y y{x()};
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};
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return 0;
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}
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int func() {
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return make_seed_pair();
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}
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}
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namespace PR18653 {
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// Forward declarations
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template<typename T> void f1() {
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void g1(struct x1);
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struct x1 {};
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}
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template void f1<int>();
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template<typename T> void f1a() {
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void g1(union x1);
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union x1 {};
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}
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template void f1a<int>();
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template<typename T> void f2() {
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void g2(enum x2); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
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enum x2 { nothing };
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}
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template void f2<int>();
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template<typename T> void f3() {
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void g3(enum class x3);
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enum class x3 { nothing };
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}
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template void f3<int>();
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template<typename T> void f4() {
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void g4(struct x4 {} x); // expected-error{{'x4' cannot be defined in a parameter type}}
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}
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template void f4<int>();
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template<typename T> void f4a() {
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void g4(union x4 {} x); // expected-error{{'x4' cannot be defined in a parameter type}}
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}
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template void f4a<int>();
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template <class T> void f();
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template <class T> struct S1 {
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void m() {
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f<class newclass>();
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f<union newunion>();
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}
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};
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template struct S1<int>;
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template <class T> struct S2 {
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void m() {
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f<enum new_enum>(); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
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}
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};
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template struct S2<int>;
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template <class T> struct S3 {
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void m() {
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f<enum class new_enum>();
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}
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};
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template struct S3<int>;
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template <class T> struct S4 {
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struct local {};
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void m() {
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f<local>();
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}
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};
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template struct S4<int>;
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template <class T> struct S4a {
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union local {};
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void m() {
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f<local>();
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}
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};
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template struct S4a<int>;
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template <class T> struct S5 {
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enum local { nothing };
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void m() {
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f<local>();
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}
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};
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template struct S5<int>;
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template <class T> struct S7 {
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enum class local { nothing };
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void m() {
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f<local>();
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}
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};
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template struct S7<int>;
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template <class T> void fff(T *x);
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template <class T> struct S01 {
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struct local { };
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void m() {
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local x;
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fff(&x);
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}
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};
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template struct S01<int>;
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template <class T> struct S01a {
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union local { };
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void m() {
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local x;
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fff(&x);
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}
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};
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template struct S01a<int>;
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template <class T> struct S02 {
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enum local { nothing };
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void m() {
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local x;
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fff(&x);
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}
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};
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template struct S02<int>;
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template <class T> struct S03 {
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enum class local { nothing };
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void m() {
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local x;
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fff(&x);
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}
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};
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template struct S03<int>;
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template <class T> struct S04 {
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void m() {
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struct { } x;
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fff(&x);
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}
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};
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template struct S04<int>;
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template <class T> struct S04a {
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void m() {
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union { } x;
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fff(&x);
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}
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};
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template struct S04a<int>;
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template <class T> struct S05 {
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void m() {
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enum { nothing } x;
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fff(&x);
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}
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};
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template struct S05<int>;
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template <class T> struct S06 {
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void m() {
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class { virtual void mmm() {} } x;
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fff(&x);
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}
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};
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template struct S06<int>;
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}
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namespace PR20625 {
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template <typename T>
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void f() {
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struct N {
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static constexpr int get() { return 42; }
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};
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constexpr int n = N::get();
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static_assert(n == 42, "n == 42");
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}
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void g() { f<void>(); }
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}
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namespace PR21332 {
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template<typename T> void f1() {
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struct S { // expected-note{{in instantiation of member class 'S' requested here}}
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void g1(int n = T::error); // expected-error{{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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template void f1<int>(); // expected-note{{in instantiation of function template specialization 'PR21332::f1<int>' requested here}}
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template<typename T> void f2() {
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struct S { // expected-note{{in instantiation of member class 'S' requested here}}
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void g2() noexcept(T::error); // expected-error{{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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template void f2<int>(); // expected-note{{in instantiation of function template specialization 'PR21332::f2<int>' requested here}}
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template<typename T> void f3() {
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enum S {
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val = T::error; // expected-error{{expected '}' or ','}} expected-error{{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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template void f3<int>(); //expected-note{{in instantiation of function template specialization 'PR21332::f3<int>' requested here}}
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template<typename T> void f4() {
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enum class S {
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val = T::error; // expected-error{{expected '}' or ','}} expected-error{{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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template void f4<int>(); // expected-note{{in instantiation of function template specialization 'PR21332::f4<int>' requested here}}
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template<typename T> void f5() {
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class S { // expected-note {{in instantiation of default member initializer 'PR21332::f5()::S::val' requested here}}
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int val = T::error; // expected-error {{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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template void f5<int>(); // expected-note {{in instantiation of function template specialization 'PR21332::f5<int>' requested here}}
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template<typename T> void f6() {
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class S { // expected-note {{in instantiation of member function 'PR21332::f6()::S::get' requested here}}
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void get() {
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class S2 { // expected-note {{in instantiation of member class 'S2' requested here}}
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void g1(int n = T::error); // expected-error {{type 'int' cannot be used prior to '::' because it has no members}}
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};
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}
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};
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}
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template void f6<int>(); // expected-note{{in instantiation of function template specialization 'PR21332::f6<int>' requested here}}
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template<typename T> void f7() {
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struct S { void g() noexcept(undefined_val); }; // expected-error{{use of undeclared identifier 'undefined_val'}}
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}
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template void f7<int>();
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}
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// rdar://23721638: Ensure that we correctly perform implicit
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// conversions when instantiating the default arguments of local functions.
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namespace rdar23721638 {
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struct A {
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A(const char *) = delete; // expected-note 2 {{explicitly marked deleted here}}
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};
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template <typename T> void foo() {
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struct Inner { // expected-note {{in instantiation}}
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void operator()(T a = "") {} // expected-error {{conversion function from 'const char [1]' to 'rdar23721638::A' invokes a deleted function}}
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// expected-note@-1 {{passing argument to parameter 'a' here}}
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// expected-note@-2 {{candidate function not viable}}
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};
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Inner()(); // expected-error {{no matching function}}
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}
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template void foo<A>(); // expected-note 2 {{in instantiation}}
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template <typename T> void bar() {
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auto lambda = [](T a = "") {}; // expected-error {{conversion function from 'const char [1]' to 'rdar23721638::A' invokes a deleted function}}
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// expected-note@-1 {{passing argument to parameter 'a' here}}
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// expected-note@-2 {{candidate function not viable}}
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// expected-note@-3 {{conversion candidate of type}}
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lambda(); // expected-error {{no matching function}}
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}
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template void bar<A>(); // expected-note {{in instantiation}}
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}
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