1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wc++98-compat -verify %s 2 // RUN: %clang_cc1 -fsyntax-only -std=c++11 %s 3 4 namespace std { 5 struct type_info; 6 using size_t = decltype(sizeof(0)); // expected-warning {{decltype}} expected-warning {{alias}} 7 template<typename T> struct initializer_list { 8 initializer_list(T*, size_t); 9 T *p; 10 size_t n; 11 }; 12 } 13 14 template<typename ...T> // expected-warning {{variadic templates are incompatible with C++98}} 15 class Variadic1 {}; 16 17 template<template<typename> class ...T> // expected-warning {{variadic templates are incompatible with C++98}} 18 class Variadic2 {}; 19 20 template<int ...I> // expected-warning {{variadic templates are incompatible with C++98}} 21 class Variadic3 {}; 22 23 int alignas(8) with_alignas; // expected-warning {{'alignas' is incompatible with C++98}} 24 int with_attribute [[ ]]; // expected-warning {{attributes are incompatible with C++98}} 25 26 void Literals() { 27 (void)u8"str"; // expected-warning {{unicode literals are incompatible with C++98}} 28 (void)u"str"; // expected-warning {{unicode literals are incompatible with C++98}} 29 (void)U"str"; // expected-warning {{unicode literals are incompatible with C++98}} 30 (void)u'x'; // expected-warning {{unicode literals are incompatible with C++98}} 31 (void)U'x'; // expected-warning {{unicode literals are incompatible with C++98}} 32 33 (void)u8R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 34 (void)uR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 35 (void)UR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 36 (void)R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 37 (void)LR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 38 } 39 40 template<typename T> struct S {}; 41 namespace TemplateParsing { 42 S<::S<void> > s; // expected-warning {{'<::' is treated as digraph '<:' (aka '[') followed by ':' in C++98}} 43 S< ::S<void>> t; // expected-warning {{consecutive right angle brackets are incompatible with C++98 (use '> >')}} 44 } 45 46 void Lambda() { 47 []{}(); // expected-warning {{lambda expressions are incompatible with C++98}} 48 } 49 50 struct Ctor { 51 Ctor(int, char); 52 Ctor(double, long); 53 }; 54 struct InitListCtor { 55 InitListCtor(std::initializer_list<bool>); 56 }; 57 58 int InitList(int i = {}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} \ 59 // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 60 (void)new int {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ 61 // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 62 (void)int{}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ 63 // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 64 int x { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} 65 S<int> s = {}; // ok, aggregate 66 s = {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} 67 std::initializer_list<int> xs = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} 68 auto ys = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} \ 69 // expected-warning {{'auto' type specifier is incompatible with C++98}} 70 Ctor c1 = { 1, 2 }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} 71 Ctor c2 = { 3.0, 4l }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} 72 InitListCtor ilc = { true, false }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} 73 const int &r = { 0 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} 74 struct { int a; const int &r; } rr = { 0, {{0}} }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} 75 return { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} 76 } 77 struct DelayedDefaultArgumentParseInitList { 78 void f(int i = {1}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} 79 } 80 }; 81 82 int operator"" _hello(const char *); // expected-warning {{literal operators are incompatible with C++98}} 83 84 enum EnumFixed : int { // expected-warning {{enumeration types with a fixed underlying type are incompatible with C++98}} 85 }; 86 87 enum class EnumScoped { // expected-warning {{scoped enumerations are incompatible with C++98}} 88 }; 89 90 void Deleted() = delete; // expected-warning {{deleted function definitions are incompatible with C++98}} 91 struct Defaulted { 92 Defaulted() = default; // expected-warning {{defaulted function definitions are incompatible with C++98}} 93 }; 94 95 int &&RvalueReference = 0; // expected-warning {{rvalue references are incompatible with C++98}} 96 struct RefQualifier { 97 void f() &; // expected-warning {{reference qualifiers on functions are incompatible with C++98}} 98 }; 99 100 auto f() -> int; // expected-warning {{trailing return types are incompatible with C++98}} 101 102 void RangeFor() { 103 int xs[] = {1, 2, 3}; 104 for (int &a : xs) { // expected-warning {{range-based for loop is incompatible with C++98}} 105 } 106 } 107 108 struct InClassInit { 109 int n = 0; // expected-warning {{in-class initialization of non-static data members is incompatible with C++98}} 110 }; 111 112 struct OverrideControlBase { 113 virtual void f(); 114 virtual void g(); 115 }; 116 struct OverrideControl final : OverrideControlBase { // expected-warning {{'final' keyword is incompatible with C++98}} 117 virtual void f() override; // expected-warning {{'override' keyword is incompatible with C++98}} 118 virtual void g() final; // expected-warning {{'final' keyword is incompatible with C++98}} 119 }; 120 121 using AliasDecl = int; // expected-warning {{alias declarations are incompatible with C++98}} 122 template<typename T> using AliasTemplate = T; // expected-warning {{alias declarations are incompatible with C++98}} 123 124 inline namespace InlineNS { // expected-warning {{inline namespaces are incompatible with C++98}} 125 } 126 127 auto auto_deduction = 0; // expected-warning {{'auto' type specifier is incompatible with C++98}} 128 int *p = new auto(0); // expected-warning {{'auto' type specifier is incompatible with C++98}} 129 130 const int align_of = alignof(int); // expected-warning {{alignof expressions are incompatible with C++98}} 131 char16_t c16 = 0; // expected-warning {{'char16_t' type specifier is incompatible with C++98}} 132 char32_t c32 = 0; // expected-warning {{'char32_t' type specifier is incompatible with C++98}} 133 constexpr int const_expr = 0; // expected-warning {{'constexpr' specifier is incompatible with C++98}} 134 decltype(const_expr) decl_type = 0; // expected-warning {{'decltype' type specifier is incompatible with C++98}} 135 __decltype(const_expr) decl_type2 = 0; // ok 136 void no_except() noexcept; // expected-warning {{noexcept specifications are incompatible with C++98}} 137 bool no_except_expr = noexcept(1 + 1); // expected-warning {{noexcept expressions are incompatible with C++98}} 138 void *null = nullptr; // expected-warning {{'nullptr' is incompatible with C++98}} 139 static_assert(true, "!"); // expected-warning {{static_assert declarations are incompatible with C++98}} 140 141 // FIXME: Reintroduce this test if support for inheriting constructors is 142 // implemented. 143 #if 0 144 struct InhCtorBase { 145 InhCtorBase(int); 146 }; 147 struct InhCtorDerived : InhCtorBase { 148 using InhCtorBase::InhCtorBase; // xpected-warning {{inheriting constructors are incompatible with C++98}} 149 }; 150 #endif 151 152 struct FriendMember { 153 static void MemberFn(); 154 friend void FriendMember::MemberFn(); // expected-warning {{friend declaration naming a member of the declaring class is incompatible with C++98}} 155 }; 156 157 struct DelegCtor { 158 DelegCtor(int) : DelegCtor() {} // expected-warning {{delegating constructors are incompatible with C++98}} 159 DelegCtor(); 160 }; 161 162 template<int n = 0> void DefaultFuncTemplateArg(); // expected-warning {{default template arguments for a function template are incompatible with C++98}} 163 164 template<typename T> int TemplateFn(T) { return 0; } 165 void LocalTemplateArg() { 166 struct S {}; 167 TemplateFn(S()); // expected-warning {{local type 'S' as template argument is incompatible with C++98}} 168 } 169 struct {} obj_of_unnamed_type; // expected-note {{here}} 170 int UnnamedTemplateArg = TemplateFn(obj_of_unnamed_type); // expected-warning {{unnamed type as template argument is incompatible with C++98}} 171 172 namespace RedundantParensInAddressTemplateParam { 173 int n; 174 template<int*p> struct S {}; 175 S<(&n)> s; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} 176 S<(((&n)))> t; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} 177 } 178 179 namespace TemplateSpecOutOfScopeNs { 180 template<typename T> struct S {}; // expected-note {{here}} 181 } 182 template<> struct TemplateSpecOutOfScopeNs::S<char> {}; // expected-warning {{class template specialization of 'S' outside namespace 'TemplateSpecOutOfScopeNs' is incompatible with C++98}} 183 184 struct Typename { 185 template<typename T> struct Inner {}; 186 }; 187 typename ::Typename TypenameOutsideTemplate(); // expected-warning {{use of 'typename' outside of a template is incompatible with C++98}} 188 Typename::template Inner<int> TemplateOutsideTemplate(); // expected-warning {{use of 'template' keyword outside of a template is incompatible with C++98}} 189 190 struct TrivialButNonPOD { 191 int f(int); 192 private: 193 int k; 194 }; 195 void Ellipsis(int n, ...); 196 void TrivialButNonPODThroughEllipsis() { 197 Ellipsis(1, TrivialButNonPOD()); // expected-warning {{passing object of trivial but non-POD type 'TrivialButNonPOD' through variadic function is incompatible with C++98}} 198 } 199 200 struct HasExplicitConversion { 201 explicit operator bool(); // expected-warning {{explicit conversion functions are incompatible with C++98}} 202 }; 203 204 struct Struct {}; 205 enum Enum { enum_val = 0 }; 206 struct BadFriends { 207 friend enum ::Enum; // expected-warning {{befriending enumeration type 'enum ::Enum' is incompatible with C++98}} 208 friend int; // expected-warning {{non-class friend type 'int' is incompatible with C++98}} 209 friend Struct; // expected-warning {{befriending 'Struct' without 'struct' keyword is incompatible with C++98}} 210 }; 211 212 int n = {}; // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 213 214 class PrivateMember { 215 struct ImPrivate {}; 216 }; 217 template<typename T> 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]}} 218 return typename T::ImPrivate(); 219 } 220 int SFINAEAccessControl(...) { return 0; } 221 int CheckSFINAEAccessControl = SFINAEAccessControl(PrivateMember()); 222 223 template<typename T> 224 struct FriendRedefinition { 225 friend void Friend() {} // expected-warning {{friend function 'Friend' would be implicitly redefined in C++98}} expected-note {{previous}} 226 }; 227 FriendRedefinition<int> FriendRedef1; 228 FriendRedefinition<char> FriendRedef2; // expected-note {{requested here}} 229 230 namespace CopyCtorIssues { 231 struct Private { 232 Private(); 233 private: 234 Private(const Private&); // expected-note {{declared private here}} 235 }; 236 struct NoViable { 237 NoViable(); 238 NoViable(NoViable&); // expected-note {{not viable}} 239 }; 240 struct Ambiguous { 241 Ambiguous(); 242 Ambiguous(const Ambiguous &, int = 0); // expected-note {{candidate}} 243 Ambiguous(const Ambiguous &, double = 0); // expected-note {{candidate}} 244 }; 245 struct Deleted { 246 Private p; // expected-note {{implicitly deleted}} 247 }; 248 249 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}} 250 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}} 251 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}} 252 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}} 253 } 254 255 namespace UnionOrAnonStructMembers { 256 struct NonTrivCtor { 257 NonTrivCtor(); // expected-note 2{{user-declared constructor}} 258 }; 259 struct NonTrivCopy { 260 NonTrivCopy(const NonTrivCopy&); // expected-note 2{{user-declared copy constructor}} 261 }; 262 struct NonTrivDtor { 263 ~NonTrivDtor(); // expected-note 2{{user-declared destructor}} 264 }; 265 union BadUnion { 266 NonTrivCtor ntc; // expected-warning {{union member 'ntc' with a non-trivial constructor is incompatible with C++98}} 267 NonTrivCopy ntcp; // expected-warning {{union member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} 268 NonTrivDtor ntd; // expected-warning {{union member 'ntd' with a non-trivial destructor is incompatible with C++98}} 269 }; 270 struct Wrap { 271 struct { 272 NonTrivCtor ntc; // expected-warning {{anonymous struct member 'ntc' with a non-trivial constructor is incompatible with C++98}} 273 NonTrivCopy ntcp; // expected-warning {{anonymous struct member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} 274 NonTrivDtor ntd; // expected-warning {{anonymous struct member 'ntd' with a non-trivial destructor is incompatible with C++98}} 275 }; 276 }; 277 union WithStaticDataMember { 278 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}} 279 static const int n = 0; // expected-warning {{static data member 'n' in union is incompatible with C++98}} 280 static int k; // expected-warning {{static data member 'k' in union is incompatible with C++98}} 281 }; 282 } 283 284 int EnumNNS = Enum::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} 285 template<typename T> void EnumNNSFn() { 286 int k = T::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} 287 }; 288 template void EnumNNSFn<Enum>(); // expected-note {{in instantiation}} 289 290 void JumpDiagnostics(int n) { 291 goto DirectJump; // expected-warning {{goto would jump into protected scope in C++98}} 292 TrivialButNonPOD tnp1; // expected-note {{jump bypasses initialization of non-POD variable}} 293 294 DirectJump: 295 void *Table[] = {&&DirectJump, &&Later}; 296 goto *Table[n]; // expected-warning {{indirect goto might cross protected scopes in C++98}} 297 298 TrivialButNonPOD tnp2; // expected-note {{jump bypasses initialization of non-POD variable}} 299 Later: // expected-note {{possible target of indirect goto}} 300 switch (n) { 301 TrivialButNonPOD tnp3; // expected-note {{jump bypasses initialization of non-POD variable}} 302 default: // expected-warning {{switch case would be in a protected scope in C++98}} 303 return; 304 } 305 } 306 307 namespace UnevaluatedMemberAccess { 308 struct S { 309 int n; 310 int f() { return sizeof(S::n); } // ok 311 }; 312 int k = sizeof(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} 313 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}} 314 } 315 316 namespace LiteralUCNs { 317 char c1 = '\u001e'; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} 318 wchar_t c2 = L'\u0041'; // expected-warning {{specifying character 'A' with a universal character name is incompatible with C++98}} 319 const char *s1 = "foo\u0031"; // expected-warning {{specifying character '1' with a universal character name is incompatible with C++98}} 320 const wchar_t *s2 = L"bar\u0085"; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} 321 } 322 323 namespace NonTypeTemplateArgs { 324 template<typename T, T v> struct S {}; 325 const int k = 5; // expected-note {{here}} 326 static void f() {} // expected-note {{here}} 327 S<const int&, k> s1; // expected-warning {{non-type template argument referring to object 'k' with internal linkage is incompatible with C++98}} 328 S<void(&)(), f> s2; // expected-warning {{non-type template argument referring to function 'f' with internal linkage is incompatible with C++98}} 329 } 330 331 namespace NullPointerTemplateArg { 332 struct A {}; 333 template<int*> struct X {}; 334 template<int A::*> struct Y {}; 335 X<(int*)0> x; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} 336 Y<(int A::*)0> y; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} 337 } 338 339 namespace PR13480 { 340 struct basic_iterator { 341 basic_iterator(const basic_iterator &it) {} 342 basic_iterator(basic_iterator &it) {} // expected-note {{because type 'PR13480::basic_iterator' has a user-declared copy constructor}} 343 }; 344 345 union test { 346 basic_iterator it; // expected-warning {{union member 'it' with a non-trivial copy constructor is incompatible with C++98}} 347 }; 348 } 349 350 namespace AssignOpUnion { 351 struct a { 352 void operator=(const a &it) {} 353 void operator=(a &it) {} // expected-note {{because type 'AssignOpUnion::a' has a user-declared copy assignment operator}} 354 }; 355 356 struct b { 357 void operator=(const b &it) {} // expected-note {{because type 'AssignOpUnion::b' has a user-declared copy assignment operator}} 358 }; 359 360 union test1 { 361 a x; // expected-warning {{union member 'x' with a non-trivial copy assignment operator is incompatible with C++98}} 362 b y; // expected-warning {{union member 'y' with a non-trivial copy assignment operator is incompatible with C++98}} 363 }; 364 } 365 366 namespace rdar11736429 { 367 struct X { 368 X(const X&) = delete; // expected-warning{{deleted function definitions are incompatible with C++98}} \ 369 // expected-note{{because type 'rdar11736429::X' has a user-declared constructor}} 370 }; 371 372 union S { 373 X x; // expected-warning{{union member 'x' with a non-trivial constructor is incompatible with C++98}} 374 }; 375 } 376
