// RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wc++98-compat -verify %s // RUN: %clang_cc1 -fsyntax-only -std=c++1y -Wc++98-compat -verify %s -DCXX1YCOMPAT namespace std { struct type_info; using size_t = decltype(sizeof(0)); // expected-warning {{decltype}} expected-warning {{alias}} template struct initializer_list { initializer_list(T*, size_t); T *p; size_t n; T *begin(); T *end(); }; } template // expected-warning {{variadic templates are incompatible with C++98}} class Variadic1 {}; template class ...T> // expected-warning {{variadic templates are incompatible with C++98}} class Variadic2 {}; template // expected-warning {{variadic templates are incompatible with C++98}} class Variadic3 {}; alignas(8) int with_alignas; // expected-warning {{'alignas' is incompatible with C++98}} int with_attribute [[ ]]; // expected-warning {{attributes are incompatible with C++98}} void Literals() { (void)u8"str"; // expected-warning {{unicode literals are incompatible with C++98}} (void)u"str"; // expected-warning {{unicode literals are incompatible with C++98}} (void)U"str"; // expected-warning {{unicode literals are incompatible with C++98}} (void)u'x'; // expected-warning {{unicode literals are incompatible with C++98}} (void)U'x'; // expected-warning {{unicode literals are incompatible with C++98}} (void)u8R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} (void)uR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} (void)UR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} (void)R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} (void)LR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} } template struct S {}; namespace TemplateParsing { S<::S > s; // expected-warning {{'<::' is treated as digraph '<:' (aka '[') followed by ':' in C++98}} S< ::S> t; // expected-warning {{consecutive right angle brackets are incompatible with C++98 (use '> >')}} } void Lambda() { []{}(); // expected-warning {{lambda expressions are incompatible with C++98}} } struct Ctor { Ctor(int, char); Ctor(double, long); }; struct InitListCtor { InitListCtor(std::initializer_list); }; int InitList(int i = {}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} \ // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} (void)new int {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} (void)int{}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} int x { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} S s = {}; // ok, aggregate s = {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} std::initializer_list xs = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} auto ys = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} \ // expected-warning {{'auto' type specifier is incompatible with C++98}} Ctor c1 = { 1, 2 }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} Ctor c2 = { 3.0, 4l }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} InitListCtor ilc = { true, false }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} const int &r = { 0 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} struct { int a; const int &r; } rr = { 0, {0} }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} return { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} } struct DelayedDefaultArgumentParseInitList { void f(int i = {1}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} } }; int operator"" _hello(const char *); // expected-warning {{literal operators are incompatible with C++98}} enum EnumFixed : int { // expected-warning {{enumeration types with a fixed underlying type are incompatible with C++98}} }; enum class EnumScoped { // expected-warning {{scoped enumerations are incompatible with C++98}} }; void Deleted() = delete; // expected-warning {{deleted function definitions are incompatible with C++98}} struct Defaulted { Defaulted() = default; // expected-warning {{defaulted function definitions are incompatible with C++98}} }; int &&RvalueReference = 0; // expected-warning {{rvalue references are incompatible with C++98}} struct RefQualifier { void f() &; // expected-warning {{reference qualifiers on functions are incompatible with C++98}} }; auto f() -> int; // expected-warning {{trailing return types are incompatible with C++98}} void RangeFor() { int xs[] = {1, 2, 3}; for (int &a : xs) { // expected-warning {{range-based for loop is incompatible with C++98}} } for (auto &b : {1, 2, 3}) { // expected-warning@-1 {{range-based for loop is incompatible with C++98}} // expected-warning@-2 {{'auto' type specifier is incompatible with C++98}} // expected-warning@-3 {{initialization of initializer_list object is incompatible with C++98}} // expected-warning@-4 {{reference initialized from initializer list is incompatible with C++98}} } struct Agg { int a, b; } const &agg = { 1, 2 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} } struct InClassInit { int n = 0; // expected-warning {{in-class initialization of non-static data members is incompatible with C++98}} }; struct OverrideControlBase { virtual void f(); virtual void g(); }; struct OverrideControl final : OverrideControlBase { // expected-warning {{'final' keyword is incompatible with C++98}} virtual void f() override; // expected-warning {{'override' keyword is incompatible with C++98}} virtual void g() final; // expected-warning {{'final' keyword is incompatible with C++98}} }; using AliasDecl = int; // expected-warning {{alias declarations are incompatible with C++98}} template using AliasTemplate = T; // expected-warning {{alias declarations are incompatible with C++98}} inline namespace InlineNS { // expected-warning {{inline namespaces are incompatible with C++98}} } auto auto_deduction = 0; // expected-warning {{'auto' type specifier is incompatible with C++98}} int *p = new auto(0); // expected-warning {{'auto' type specifier is incompatible with C++98}} const int align_of = alignof(int); // expected-warning {{alignof expressions are incompatible with C++98}} char16_t c16 = 0; // expected-warning {{'char16_t' type specifier is incompatible with C++98}} char32_t c32 = 0; // expected-warning {{'char32_t' type specifier is incompatible with C++98}} constexpr int const_expr = 0; // expected-warning {{'constexpr' specifier is incompatible with C++98}} decltype(const_expr) decl_type = 0; // expected-warning {{'decltype' type specifier is incompatible with C++98}} __decltype(const_expr) decl_type2 = 0; // ok void no_except() noexcept; // expected-warning {{noexcept specifications are incompatible with C++98}} bool no_except_expr = noexcept(1 + 1); // expected-warning {{noexcept expressions are incompatible with C++98}} void *null = nullptr; // expected-warning {{'nullptr' is incompatible with C++98}} static_assert(true, "!"); // expected-warning {{static_assert declarations are incompatible with C++98}} struct InhCtorBase { InhCtorBase(int); }; struct InhCtorDerived : InhCtorBase { using InhCtorBase::InhCtorBase; // expected-warning {{inheriting constructors are incompatible with C++98}} }; struct FriendMember { static void MemberFn(); friend void FriendMember::MemberFn(); // expected-warning {{friend declaration naming a member of the declaring class is incompatible with C++98}} }; struct DelegCtor { DelegCtor(int) : DelegCtor() {} // expected-warning {{delegating constructors are incompatible with C++98}} DelegCtor(); }; template void DefaultFuncTemplateArg(); // expected-warning {{default template arguments for a function template are incompatible with C++98}} template int TemplateFn(T) { return 0; } void LocalTemplateArg() { struct S {}; TemplateFn(S()); // expected-warning {{local type 'S' as template argument is incompatible with C++98}} } struct {} obj_of_unnamed_type; // expected-note {{here}} int UnnamedTemplateArg = TemplateFn(obj_of_unnamed_type); // expected-warning {{unnamed type as template argument is incompatible with C++98}} namespace RedundantParensInAddressTemplateParam { int n; template struct S {}; S<(&n)> s; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} S<(((&n)))> t; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} } namespace TemplateSpecOutOfScopeNs { template struct S {}; // expected-note {{here}} } template<> struct TemplateSpecOutOfScopeNs::S {}; // expected-warning {{class template specialization of 'S' outside namespace 'TemplateSpecOutOfScopeNs' is incompatible with C++98}} struct Typename { template struct Inner {}; }; typename ::Typename TypenameOutsideTemplate(); // expected-warning {{use of 'typename' outside of a template is incompatible with C++98}} Typename::template Inner TemplateOutsideTemplate(); // expected-warning {{use of 'template' keyword outside of a template is incompatible with C++98}} struct TrivialButNonPOD { int f(int); private: int k; }; void Ellipsis(int n, ...); void TrivialButNonPODThroughEllipsis() { Ellipsis(1, TrivialButNonPOD()); // expected-warning {{passing object of trivial but non-POD type 'TrivialButNonPOD' through variadic function is incompatible with C++98}} } struct HasExplicitConversion { explicit operator bool(); // expected-warning {{explicit conversion functions are incompatible with C++98}} }; struct Struct {}; enum Enum { enum_val = 0 }; struct BadFriends { friend enum ::Enum; // expected-warning {{befriending enumeration type 'enum ::Enum' is incompatible with C++98}} friend int; // expected-warning {{non-class friend type 'int' is incompatible with C++98}} friend Struct; // expected-warning {{befriending 'Struct' without 'struct' keyword is incompatible with C++98}} }; int n = {}; // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} class PrivateMember { struct ImPrivate {}; }; template typename T::ImPrivate SFINAEAccessControl(T t) { // expected-warning {{substitution failure due to access control is incompatible with C++98}} expected-note {{while substituting deduced template arguments into function template 'SFINAEAccessControl' [with T = PrivateMember]}} return typename T::ImPrivate(); } int SFINAEAccessControl(...) { return 0; } int CheckSFINAEAccessControl = SFINAEAccessControl(PrivateMember()); template struct FriendRedefinition { friend void Friend() {} // expected-warning {{friend function 'Friend' would be implicitly redefined in C++98}} expected-note {{previous}} }; FriendRedefinition FriendRedef1; FriendRedefinition FriendRedef2; // expected-note {{requested here}} namespace CopyCtorIssues { struct Private { Private(); private: Private(const Private&); // expected-note {{declared private here}} }; struct NoViable { NoViable(); NoViable(NoViable&); // expected-note {{not viable}} }; struct Ambiguous { Ambiguous(); Ambiguous(const Ambiguous &, int = 0); // expected-note {{candidate}} Ambiguous(const Ambiguous &, double = 0); // expected-note {{candidate}} }; struct Deleted { Private p; // expected-note {{implicitly deleted}} }; const Private &a = Private(); // expected-warning {{copying variable of type 'CopyCtorIssues::Private' when binding a reference to a temporary would invoke an inaccessible constructor in C++98}} const NoViable &b = NoViable(); // expected-warning {{copying variable of type 'CopyCtorIssues::NoViable' when binding a reference to a temporary would find no viable constructor in C++98}} const Ambiguous &c = Ambiguous(); // expected-warning {{copying variable of type 'CopyCtorIssues::Ambiguous' when binding a reference to a temporary would find ambiguous constructors in C++98}} const Deleted &d = Deleted(); // expected-warning {{copying variable of type 'CopyCtorIssues::Deleted' when binding a reference to a temporary would invoke a deleted constructor in C++98}} } namespace UnionOrAnonStructMembers { struct NonTrivCtor { NonTrivCtor(); // expected-note 2{{user-provided default constructor}} }; struct NonTrivCopy { NonTrivCopy(const NonTrivCopy&); // expected-note 2{{user-provided copy constructor}} }; struct NonTrivDtor { ~NonTrivDtor(); // expected-note 2{{user-provided destructor}} }; union BadUnion { NonTrivCtor ntc; // expected-warning {{union member 'ntc' with a non-trivial constructor is incompatible with C++98}} NonTrivCopy ntcp; // expected-warning {{union member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} NonTrivDtor ntd; // expected-warning {{union member 'ntd' with a non-trivial destructor is incompatible with C++98}} }; struct Wrap { struct { NonTrivCtor ntc; // expected-warning {{anonymous struct member 'ntc' with a non-trivial constructor is incompatible with C++98}} NonTrivCopy ntcp; // expected-warning {{anonymous struct member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} NonTrivDtor ntd; // expected-warning {{anonymous struct member 'ntd' with a non-trivial destructor is incompatible with C++98}} }; }; union WithStaticDataMember { static constexpr double d = 0.0; // expected-warning {{static data member 'd' in union is incompatible with C++98}} expected-warning {{'constexpr' specifier is incompatible with C++98}} static const int n = 0; // expected-warning {{static data member 'n' in union is incompatible with C++98}} static int k; // expected-warning {{static data member 'k' in union is incompatible with C++98}} }; } int EnumNNS = Enum::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} template void EnumNNSFn() { int k = T::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} }; template void EnumNNSFn(); // expected-note {{in instantiation}} void JumpDiagnostics(int n) { goto DirectJump; // expected-warning {{goto would jump into protected scope in C++98}} TrivialButNonPOD tnp1; // expected-note {{jump bypasses initialization of non-POD variable}} DirectJump: void *Table[] = {&&DirectJump, &&Later}; goto *Table[n]; // expected-warning {{indirect goto might cross protected scopes in C++98}} TrivialButNonPOD tnp2; // expected-note {{jump bypasses initialization of non-POD variable}} Later: // expected-note {{possible target of indirect goto}} switch (n) { TrivialButNonPOD tnp3; // expected-note {{jump bypasses initialization of non-POD variable}} default: // expected-warning {{switch case would be in a protected scope in C++98}} return; } } namespace UnevaluatedMemberAccess { struct S { int n; int f() { return sizeof(S::n); } // ok }; int k = sizeof(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} const std::type_info &ti = typeid(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} } namespace LiteralUCNs { char c1 = '\u001e'; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} wchar_t c2 = L'\u0041'; // expected-warning {{specifying character 'A' with a universal character name is incompatible with C++98}} const char *s1 = "foo\u0031"; // expected-warning {{specifying character '1' with a universal character name is incompatible with C++98}} const wchar_t *s2 = L"bar\u0085"; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} } namespace NonTypeTemplateArgs { template struct S {}; const int k = 5; // expected-note {{here}} static void f() {} // expected-note {{here}} S s1; // expected-warning {{non-type template argument referring to object 'k' with internal linkage is incompatible with C++98}} S s2; // expected-warning {{non-type template argument referring to function 'f' with internal linkage is incompatible with C++98}} } namespace NullPointerTemplateArg { struct A {}; template struct X {}; template struct Y {}; X<(int*)0> x; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} Y<(int A::*)0> y; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} } namespace PR13480 { struct basic_iterator { basic_iterator(const basic_iterator &it) {} // expected-note {{because type 'PR13480::basic_iterator' has a user-provided copy constructor}} basic_iterator(basic_iterator &it) {} }; union test { basic_iterator it; // expected-warning {{union member 'it' with a non-trivial copy constructor is incompatible with C++98}} }; } namespace AssignOpUnion { struct a { void operator=(const a &it) {} // expected-note {{because type 'AssignOpUnion::a' has a user-provided copy assignment operator}} void operator=(a &it) {} }; struct b { void operator=(const b &it) {} // expected-note {{because type 'AssignOpUnion::b' has a user-provided copy assignment operator}} }; union test1 { a x; // expected-warning {{union member 'x' with a non-trivial copy assignment operator is incompatible with C++98}} b y; // expected-warning {{union member 'y' with a non-trivial copy assignment operator is incompatible with C++98}} }; } namespace rdar11736429 { struct X { // expected-note {{because type 'rdar11736429::X' has no default constructor}} X(const X&) = delete; // expected-warning{{deleted function definitions are incompatible with C++98}} \ // expected-note {{implicit default constructor suppressed by user-declared constructor}} }; union S { X x; // expected-warning{{union member 'x' with a non-trivial constructor is incompatible with C++98}} }; } template T var = T(10); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template T* var = new T(); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template<> int var = 10; #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template int var; float fvar = var; class A { template static T var = T(10); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template static T* var = new T(); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif }; struct B { template static T v; }; #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template T B::v = T(); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template T* B::v = new T(); #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template<> int B::v = 10; #ifdef CXX1YCOMPAT // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++1y}} #else // expected-warning@-4 {{variable templates are a C++1y extension}} #endif template int B::v; float fsvar = B::v; #ifdef CXX1YCOMPAT int digit_seps = 123'456; // expected-warning {{digit separators are incompatible with C++ standards before C++1y}} #endif