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 T *begin(); 12 T *end(); 13 }; 14 } 15 16 template<typename ...T> // expected-warning {{variadic templates are incompatible with C++98}} 17 class Variadic1 {}; 18 19 template<template<typename> class ...T> // expected-warning {{variadic templates are incompatible with C++98}} 20 class Variadic2 {}; 21 22 template<int ...I> // expected-warning {{variadic templates are incompatible with C++98}} 23 class Variadic3 {}; 24 25 alignas(8) int with_alignas; // expected-warning {{'alignas' is incompatible with C++98}} 26 int with_attribute [[ ]]; // expected-warning {{attributes are incompatible with C++98}} 27 28 void Literals() { 29 (void)u8"str"; // expected-warning {{unicode literals are incompatible with C++98}} 30 (void)u"str"; // expected-warning {{unicode literals are incompatible with C++98}} 31 (void)U"str"; // expected-warning {{unicode literals are incompatible with C++98}} 32 (void)u'x'; // expected-warning {{unicode literals are incompatible with C++98}} 33 (void)U'x'; // expected-warning {{unicode literals are incompatible with C++98}} 34 35 (void)u8R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 36 (void)uR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 37 (void)UR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 38 (void)R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 39 (void)LR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} 40 } 41 42 template<typename T> struct S {}; 43 namespace TemplateParsing { 44 S<::S<void> > s; // expected-warning {{'<::' is treated as digraph '<:' (aka '[') followed by ':' in C++98}} 45 S< ::S<void>> t; // expected-warning {{consecutive right angle brackets are incompatible with C++98 (use '> >')}} 46 } 47 48 void Lambda() { 49 []{}(); // expected-warning {{lambda expressions are incompatible with C++98}} 50 } 51 52 struct Ctor { 53 Ctor(int, char); 54 Ctor(double, long); 55 }; 56 struct InitListCtor { 57 InitListCtor(std::initializer_list<bool>); 58 }; 59 60 int InitList(int i = {}) { // 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)new 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 (void)int{}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ 65 // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 66 int x { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} 67 S<int> s = {}; // ok, aggregate 68 s = {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} 69 std::initializer_list<int> xs = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} 70 auto ys = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} \ 71 // expected-warning {{'auto' type specifier is incompatible with C++98}} 72 Ctor c1 = { 1, 2 }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} 73 Ctor c2 = { 3.0, 4l }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} 74 InitListCtor ilc = { true, false }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} 75 const int &r = { 0 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} 76 struct { int a; const int &r; } rr = { 0, {{0}} }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} 77 return { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} 78 } 79 struct DelayedDefaultArgumentParseInitList { 80 void f(int i = {1}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} 81 } 82 }; 83 84 int operator"" _hello(const char *); // expected-warning {{literal operators are incompatible with C++98}} 85 86 enum EnumFixed : int { // expected-warning {{enumeration types with a fixed underlying type are incompatible with C++98}} 87 }; 88 89 enum class EnumScoped { // expected-warning {{scoped enumerations are incompatible with C++98}} 90 }; 91 92 void Deleted() = delete; // expected-warning {{deleted function definitions are incompatible with C++98}} 93 struct Defaulted { 94 Defaulted() = default; // expected-warning {{defaulted function definitions are incompatible with C++98}} 95 }; 96 97 int &&RvalueReference = 0; // expected-warning {{rvalue references are incompatible with C++98}} 98 struct RefQualifier { 99 void f() &; // expected-warning {{reference qualifiers on functions are incompatible with C++98}} 100 }; 101 102 auto f() -> int; // expected-warning {{trailing return types are incompatible with C++98}} 103 104 void RangeFor() { 105 int xs[] = {1, 2, 3}; 106 for (int &a : xs) { // expected-warning {{range-based for loop is incompatible with C++98}} 107 } 108 for (auto &b : {1, 2, 3}) { 109 // expected-warning@-1 {{range-based for loop is incompatible with C++98}} 110 // expected-warning@-2 {{'auto' type specifier is incompatible with C++98}} 111 // expected-warning@-3 {{initialization of initializer_list object is incompatible with C++98}} 112 // expected-warning@-4 {{reference initialized from initializer list is incompatible with C++98}} 113 } 114 struct Agg { int a, b; } const &agg = { 1, 2 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} 115 } 116 117 struct InClassInit { 118 int n = 0; // expected-warning {{in-class initialization of non-static data members is incompatible with C++98}} 119 }; 120 121 struct OverrideControlBase { 122 virtual void f(); 123 virtual void g(); 124 }; 125 struct OverrideControl final : OverrideControlBase { // expected-warning {{'final' keyword is incompatible with C++98}} 126 virtual void f() override; // expected-warning {{'override' keyword is incompatible with C++98}} 127 virtual void g() final; // expected-warning {{'final' keyword is incompatible with C++98}} 128 }; 129 130 using AliasDecl = int; // expected-warning {{alias declarations are incompatible with C++98}} 131 template<typename T> using AliasTemplate = T; // expected-warning {{alias declarations are incompatible with C++98}} 132 133 inline namespace InlineNS { // expected-warning {{inline namespaces are incompatible with C++98}} 134 } 135 136 auto auto_deduction = 0; // expected-warning {{'auto' type specifier is incompatible with C++98}} 137 int *p = new auto(0); // expected-warning {{'auto' type specifier is incompatible with C++98}} 138 139 const int align_of = alignof(int); // expected-warning {{alignof expressions are incompatible with C++98}} 140 char16_t c16 = 0; // expected-warning {{'char16_t' type specifier is incompatible with C++98}} 141 char32_t c32 = 0; // expected-warning {{'char32_t' type specifier is incompatible with C++98}} 142 constexpr int const_expr = 0; // expected-warning {{'constexpr' specifier is incompatible with C++98}} 143 decltype(const_expr) decl_type = 0; // expected-warning {{'decltype' type specifier is incompatible with C++98}} 144 __decltype(const_expr) decl_type2 = 0; // ok 145 void no_except() noexcept; // expected-warning {{noexcept specifications are incompatible with C++98}} 146 bool no_except_expr = noexcept(1 + 1); // expected-warning {{noexcept expressions are incompatible with C++98}} 147 void *null = nullptr; // expected-warning {{'nullptr' is incompatible with C++98}} 148 static_assert(true, "!"); // expected-warning {{static_assert declarations are incompatible with C++98}} 149 150 // FIXME: Reintroduce this test if support for inheriting constructors is 151 // implemented. 152 #if 0 153 struct InhCtorBase { 154 InhCtorBase(int); 155 }; 156 struct InhCtorDerived : InhCtorBase { 157 using InhCtorBase::InhCtorBase; // xpected-warning {{inheriting constructors are incompatible with C++98}} 158 }; 159 #endif 160 161 struct FriendMember { 162 static void MemberFn(); 163 friend void FriendMember::MemberFn(); // expected-warning {{friend declaration naming a member of the declaring class is incompatible with C++98}} 164 }; 165 166 struct DelegCtor { 167 DelegCtor(int) : DelegCtor() {} // expected-warning {{delegating constructors are incompatible with C++98}} 168 DelegCtor(); 169 }; 170 171 template<int n = 0> void DefaultFuncTemplateArg(); // expected-warning {{default template arguments for a function template are incompatible with C++98}} 172 173 template<typename T> int TemplateFn(T) { return 0; } 174 void LocalTemplateArg() { 175 struct S {}; 176 TemplateFn(S()); // expected-warning {{local type 'S' as template argument is incompatible with C++98}} 177 } 178 struct {} obj_of_unnamed_type; // expected-note {{here}} 179 int UnnamedTemplateArg = TemplateFn(obj_of_unnamed_type); // expected-warning {{unnamed type as template argument is incompatible with C++98}} 180 181 namespace RedundantParensInAddressTemplateParam { 182 int n; 183 template<int*p> struct S {}; 184 S<(&n)> s; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} 185 S<(((&n)))> t; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} 186 } 187 188 namespace TemplateSpecOutOfScopeNs { 189 template<typename T> struct S {}; // expected-note {{here}} 190 } 191 template<> struct TemplateSpecOutOfScopeNs::S<char> {}; // expected-warning {{class template specialization of 'S' outside namespace 'TemplateSpecOutOfScopeNs' is incompatible with C++98}} 192 193 struct Typename { 194 template<typename T> struct Inner {}; 195 }; 196 typename ::Typename TypenameOutsideTemplate(); // expected-warning {{use of 'typename' outside of a template is incompatible with C++98}} 197 Typename::template Inner<int> TemplateOutsideTemplate(); // expected-warning {{use of 'template' keyword outside of a template is incompatible with C++98}} 198 199 struct TrivialButNonPOD { 200 int f(int); 201 private: 202 int k; 203 }; 204 void Ellipsis(int n, ...); 205 void TrivialButNonPODThroughEllipsis() { 206 Ellipsis(1, TrivialButNonPOD()); // expected-warning {{passing object of trivial but non-POD type 'TrivialButNonPOD' through variadic function is incompatible with C++98}} 207 } 208 209 struct HasExplicitConversion { 210 explicit operator bool(); // expected-warning {{explicit conversion functions are incompatible with C++98}} 211 }; 212 213 struct Struct {}; 214 enum Enum { enum_val = 0 }; 215 struct BadFriends { 216 friend enum ::Enum; // expected-warning {{befriending enumeration type 'enum ::Enum' is incompatible with C++98}} 217 friend int; // expected-warning {{non-class friend type 'int' is incompatible with C++98}} 218 friend Struct; // expected-warning {{befriending 'Struct' without 'struct' keyword is incompatible with C++98}} 219 }; 220 221 int n = {}; // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} 222 223 class PrivateMember { 224 struct ImPrivate {}; 225 }; 226 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]}} 227 return typename T::ImPrivate(); 228 } 229 int SFINAEAccessControl(...) { return 0; } 230 int CheckSFINAEAccessControl = SFINAEAccessControl(PrivateMember()); 231 232 template<typename T> 233 struct FriendRedefinition { 234 friend void Friend() {} // expected-warning {{friend function 'Friend' would be implicitly redefined in C++98}} expected-note {{previous}} 235 }; 236 FriendRedefinition<int> FriendRedef1; 237 FriendRedefinition<char> FriendRedef2; // expected-note {{requested here}} 238 239 namespace CopyCtorIssues { 240 struct Private { 241 Private(); 242 private: 243 Private(const Private&); // expected-note {{declared private here}} 244 }; 245 struct NoViable { 246 NoViable(); 247 NoViable(NoViable&); // expected-note {{not viable}} 248 }; 249 struct Ambiguous { 250 Ambiguous(); 251 Ambiguous(const Ambiguous &, int = 0); // expected-note {{candidate}} 252 Ambiguous(const Ambiguous &, double = 0); // expected-note {{candidate}} 253 }; 254 struct Deleted { 255 Private p; // expected-note {{implicitly deleted}} 256 }; 257 258 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}} 259 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}} 260 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}} 261 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}} 262 } 263 264 namespace UnionOrAnonStructMembers { 265 struct NonTrivCtor { 266 NonTrivCtor(); // expected-note 2{{user-provided default constructor}} 267 }; 268 struct NonTrivCopy { 269 NonTrivCopy(const NonTrivCopy&); // expected-note 2{{user-provided copy constructor}} 270 }; 271 struct NonTrivDtor { 272 ~NonTrivDtor(); // expected-note 2{{user-provided destructor}} 273 }; 274 union BadUnion { 275 NonTrivCtor ntc; // expected-warning {{union member 'ntc' with a non-trivial constructor is incompatible with C++98}} 276 NonTrivCopy ntcp; // expected-warning {{union member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} 277 NonTrivDtor ntd; // expected-warning {{union member 'ntd' with a non-trivial destructor is incompatible with C++98}} 278 }; 279 struct Wrap { 280 struct { 281 NonTrivCtor ntc; // expected-warning {{anonymous struct member 'ntc' with a non-trivial constructor is incompatible with C++98}} 282 NonTrivCopy ntcp; // expected-warning {{anonymous struct member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} 283 NonTrivDtor ntd; // expected-warning {{anonymous struct member 'ntd' with a non-trivial destructor is incompatible with C++98}} 284 }; 285 }; 286 union WithStaticDataMember { 287 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}} 288 static const int n = 0; // expected-warning {{static data member 'n' in union is incompatible with C++98}} 289 static int k; // expected-warning {{static data member 'k' in union is incompatible with C++98}} 290 }; 291 } 292 293 int EnumNNS = Enum::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} 294 template<typename T> void EnumNNSFn() { 295 int k = T::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} 296 }; 297 template void EnumNNSFn<Enum>(); // expected-note {{in instantiation}} 298 299 void JumpDiagnostics(int n) { 300 goto DirectJump; // expected-warning {{goto would jump into protected scope in C++98}} 301 TrivialButNonPOD tnp1; // expected-note {{jump bypasses initialization of non-POD variable}} 302 303 DirectJump: 304 void *Table[] = {&&DirectJump, &&Later}; 305 goto *Table[n]; // expected-warning {{indirect goto might cross protected scopes in C++98}} 306 307 TrivialButNonPOD tnp2; // expected-note {{jump bypasses initialization of non-POD variable}} 308 Later: // expected-note {{possible target of indirect goto}} 309 switch (n) { 310 TrivialButNonPOD tnp3; // expected-note {{jump bypasses initialization of non-POD variable}} 311 default: // expected-warning {{switch case would be in a protected scope in C++98}} 312 return; 313 } 314 } 315 316 namespace UnevaluatedMemberAccess { 317 struct S { 318 int n; 319 int f() { return sizeof(S::n); } // ok 320 }; 321 int k = sizeof(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} 322 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}} 323 } 324 325 namespace LiteralUCNs { 326 char c1 = '\u001e'; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} 327 wchar_t c2 = L'\u0041'; // expected-warning {{specifying character 'A' with a universal character name is incompatible with C++98}} 328 const char *s1 = "foo\u0031"; // expected-warning {{specifying character '1' with a universal character name is incompatible with C++98}} 329 const wchar_t *s2 = L"bar\u0085"; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} 330 } 331 332 namespace NonTypeTemplateArgs { 333 template<typename T, T v> struct S {}; 334 const int k = 5; // expected-note {{here}} 335 static void f() {} // expected-note {{here}} 336 S<const int&, k> s1; // expected-warning {{non-type template argument referring to object 'k' with internal linkage is incompatible with C++98}} 337 S<void(&)(), f> s2; // expected-warning {{non-type template argument referring to function 'f' with internal linkage is incompatible with C++98}} 338 } 339 340 namespace NullPointerTemplateArg { 341 struct A {}; 342 template<int*> struct X {}; 343 template<int A::*> struct Y {}; 344 X<(int*)0> x; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} 345 Y<(int A::*)0> y; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} 346 } 347 348 namespace PR13480 { 349 struct basic_iterator { 350 basic_iterator(const basic_iterator &it) {} // expected-note {{because type 'PR13480::basic_iterator' has a user-provided copy constructor}} 351 basic_iterator(basic_iterator &it) {} 352 }; 353 354 union test { 355 basic_iterator it; // expected-warning {{union member 'it' with a non-trivial copy constructor is incompatible with C++98}} 356 }; 357 } 358 359 namespace AssignOpUnion { 360 struct a { 361 void operator=(const a &it) {} // expected-note {{because type 'AssignOpUnion::a' has a user-provided copy assignment operator}} 362 void operator=(a &it) {} 363 }; 364 365 struct b { 366 void operator=(const b &it) {} // expected-note {{because type 'AssignOpUnion::b' has a user-provided copy assignment operator}} 367 }; 368 369 union test1 { 370 a x; // expected-warning {{union member 'x' with a non-trivial copy assignment operator is incompatible with C++98}} 371 b y; // expected-warning {{union member 'y' with a non-trivial copy assignment operator is incompatible with C++98}} 372 }; 373 } 374 375 namespace rdar11736429 { 376 struct X { // expected-note {{because type 'rdar11736429::X' has no default constructor}} 377 X(const X&) = delete; // expected-warning{{deleted function definitions are incompatible with C++98}} \ 378 // expected-note {{implicit default constructor suppressed by user-declared constructor}} 379 }; 380 381 union S { 382 X x; // expected-warning{{union member 'x' with a non-trivial constructor is incompatible with C++98}} 383 }; 384 } 385
