clang/test/Parser/MicrosoftExtensions.cpp

   1 // RUN: %clang_cc1 %s -triple i386-pc-win32 -std=c++14 -fsyntax-only -Wno-unused-getter-return-value -Wno-unused-value -Wmicrosoft -verify -fms-extensions -fms-compatibility -fdelayed-template-parsing
   2
   3 /* Microsoft attribute tests */
   4 [repeatable][source_annotation_attribute( Parameter|ReturnValue )]
   5 struct SA_Post{ SA_Post(); int attr; };
   6
   7 [returnvalue:SA_Post( attr=1)]
   8 int foo1([SA_Post(attr=1)] void *param);
   9
  10 namespace {
  11   [returnvalue:SA_Post(attr=1)]
  12   int foo2([SA_Post(attr=1)] void *param);
  13 }
  14
  15 class T {
  16   [returnvalue:SA_Post(attr=1)]
  17   int foo3([SA_Post(attr=1)] void *param);
  18 };
  19
  20 extern "C" {
  21   [returnvalue:SA_Post(attr=1)]
  22   int foo5([SA_Post(attr=1)] void *param);
  23 }
  24
  25 class class_attr {
  26 public:
  27   class_attr([SA_Pre(Null=SA_No,NullTerminated=SA_Yes)]  int a)
  28   {
  29   }
  30 };
  31
  32
  33
  34 void uuidof_test1()
  35 {
  36   __uuidof(0);
  37 }
  38
  39 typedef struct _GUID
  40 {
  41     unsigned long  Data1;
  42     unsigned short Data2;
  43     unsigned short Data3;
  44     unsigned char  Data4[8];
  45 } GUID;
  46
  47 struct __declspec(uuid(L"00000000-0000-0000-1234-000000000047")) uuid_attr_bad1 { };// expected-error {{'uuid' attribute requires a string}}
  48 struct __declspec(uuid(3)) uuid_attr_bad2 { };// expected-error {{'uuid' attribute requires a string}}
  49 struct __declspec(uuid("0000000-0000-0000-1234-0000500000047")) uuid_attr_bad3 { };// expected-error {{uuid attribute contains a malformed GUID}}
  50 struct __declspec(uuid("0000000-0000-0000-Z234-000000000047")) uuid_attr_bad4 { };// expected-error {{uuid attribute contains a malformed GUID}}
  51 struct __declspec(uuid("000000000000-0000-1234-000000000047")) uuid_attr_bad5 { };// expected-error {{uuid attribute contains a malformed GUID}}
  52 [uuid("000000000000-0000-1234-000000000047")] struct uuid_attr_bad6 { };// expected-error {{uuid attribute contains a malformed GUID}}
  53
  54 __declspec(uuid("000000A0-0000-0000-C000-000000000046")) int i; // expected-warning {{'uuid' attribute only applies to structs, unions, classes, and enums}}
  55
  56 struct __declspec(uuid("000000A0-0000-0000-C000-000000000046"))
  57 struct_with_uuid { };
  58 struct struct_without_uuid { };
  59
  60 struct __declspec(uuid("000000A0-0000-0000-C000-000000000049"))
  61 struct_with_uuid2;
  62
  63 [uuid("000000A0-0000-0000-C000-000000000049")] struct struct_with_uuid3; // expected-warning{{specifying 'uuid' as an ATL attribute is deprecated; use __declspec instead}}
  64
  65 struct
  66 struct_with_uuid2 {} ;
  67
  68 enum __declspec(uuid("000000A0-0000-0000-C000-000000000046"))
  69 enum_with_uuid { };
  70 enum enum_without_uuid { };
  71
  72 int __declspec(uuid("000000A0-0000-0000-C000-000000000046")) inappropriate_uuid; // expected-warning {{'uuid' attribute only applies to}}
  73
  74 int uuid_sema_test()
  75 {
  76    struct_with_uuid var_with_uuid[1];
  77    struct_without_uuid var_without_uuid[1];
  78
  79    __uuidof(struct_with_uuid);
  80    __uuidof(struct_with_uuid2);
  81    __uuidof(struct_with_uuid3);
  82    __uuidof(struct_without_uuid); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  83    __uuidof(struct_with_uuid*);
  84    __uuidof(struct_without_uuid*); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  85    __uuidof(struct_with_uuid[1]);
  86    __uuidof(struct_with_uuid*[1]); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  87    __uuidof(const struct_with_uuid[1][1]);
  88    __uuidof(const struct_with_uuid*[1][1]); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  89
  90    __uuidof(enum_with_uuid);
  91    __uuidof(enum_without_uuid); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  92    __uuidof(enum_with_uuid*);
  93    __uuidof(enum_without_uuid*); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  94    __uuidof(enum_with_uuid[1]);
  95    __uuidof(enum_with_uuid*[1]); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  96    __uuidof(const enum_with_uuid[1][1]);
  97    __uuidof(const enum_with_uuid*[1][1]); // expected-error {{cannot call operator __uuidof on a type with no GUID}}
  98
  99    __uuidof(var_with_uuid);
 100    __uuidof(var_without_uuid);// expected-error {{cannot call operator __uuidof on a type with no GUID}}
 101    __uuidof(var_with_uuid[1]);
 102    __uuidof(var_without_uuid[1]);// expected-error {{cannot call operator __uuidof on a type with no GUID}}
 103    __uuidof(&var_with_uuid[1]);
 104    __uuidof(&var_without_uuid[1]);// expected-error {{cannot call operator __uuidof on a type with no GUID}}
 105
 106    __uuidof(0);
 107    __uuidof(1);// expected-error {{cannot call operator __uuidof on a type with no GUID}}
 108 }
 109
 110
 111 template <class T>
 112 void template_uuid()
 113 {
 114    T expr;
 115
 116    __uuidof(T);
 117    __uuidof(expr);
 118 }
 119
 120
 121 template <class T, const GUID* g = &__uuidof(T)> // expected-note {{template parameter is declared here}}
 122 class COM_CLASS_TEMPLATE  { };
 123
 124 typedef COM_CLASS_TEMPLATE<struct_with_uuid, &*&__uuidof(struct_with_uuid)> COM_TYPE_1; // expected-warning {{non-type template argument containing a dereference operation is a Microsoft extension}}
 125 typedef COM_CLASS_TEMPLATE<struct_with_uuid> COM_TYPE_2;
 126
 127 template <class T, const GUID& g>
 128 class COM_CLASS_TEMPLATE_REF  { };
 129 typedef COM_CLASS_TEMPLATE_REF<struct_with_uuid, __uuidof(struct_with_uuid)> COM_TYPE_REF;
 130
 131   struct late_defined_uuid;
 132   template<typename T>
 133   void test_late_defined_uuid() {
 134     __uuidof(late_defined_uuid);
 135   }
 136   struct __declspec(uuid("000000A0-0000-0000-C000-000000000049")) late_defined_uuid;
 137
 138 COM_CLASS_TEMPLATE_REF<int, __uuidof(struct_with_uuid)> good_template_arg;
 139
 140 COM_CLASS_TEMPLATE<int, __uuidof(struct_with_uuid)> bad_template_arg; // expected-error {{non-type template argument for template parameter of pointer type 'const GUID *' (aka 'const _GUID *') must have its address taken}}
 141
 142 namespace PR16911 {
 143 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890aB}")) uuid;
 144 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890aB}")) uuid2;
 145
 146 template <typename T, typename T2>
 147 struct thing {
 148 };
 149
 150 struct empty {};
 151 struct inher : public thing<empty, uuid2> {};
 152
 153 struct __declspec(uuid("{12345678-1234-1234-1234-1234567890aB}")) uuid;
 154 const struct _GUID *w = &__uuidof(inher); // expected-error{{cannot call operator __uuidof on a type with no GUID}}
 155 const struct _GUID *x = &__uuidof(thing<uuid, inher>);
 156 const struct _GUID *y = &__uuidof(thing<uuid2, uuid>); // expected-error{{cannot call operator __uuidof on a type with multiple GUIDs}}
 157 thing<uuid2, uuid> thing_obj = thing<uuid2, uuid>();
 158 const struct _GUID *z = &__uuidof(thing_obj); // expected-error{{cannot call operator __uuidof on a type with multiple GUIDs}}
 159 }
 160
 161 class CtorCall {
 162 public:
 163   CtorCall& operator=(const CtorCall& that);
 164
 165   int a;
 166 };
 167
 168 CtorCall& CtorCall::operator=(const CtorCall& that)
 169 {
 170     if (this != &that) {
 171         this->CtorCall::~CtorCall();
 172         this->CtorCall::CtorCall(that); // expected-warning {{explicit constructor calls are a Microsoft extension}}
 173     }
 174     return *this;
 175 }
 176
 177 template <class A>
 178 class C1 {
 179 public:
 180   template <int B>
 181   class Iterator {
 182   };
 183 };
 184
 185 template<class T>
 186 class C2  {
 187   typename C1<T>:: /*template*/  Iterator<0> Mypos; // expected-warning {{use 'template' keyword to treat 'Iterator' as a dependent template name}}
 188 };
 189
 190 template <class T>
 191 void missing_template_keyword(){
 192   typename C1<T>:: /*template*/ Iterator<0> Mypos; // expected-warning {{use 'template' keyword to treat 'Iterator' as a dependent template name}}
 193 }
 194
 195
 196
 197 class AAAA {
 198    typedef int D;
 199 };
 200
 201 template <typename T>
 202 class SimpleTemplate {};
 203
 204 template <class T>
 205 void redundant_typename() {
 206    typename T t;// expected-warning {{expected a qualified name after 'typename'}}
 207    typename AAAA a;// expected-warning {{expected a qualified name after 'typename'}}
 208
 209    t = 3;
 210
 211    typedef typename T* pointerT;// expected-warning {{expected a qualified name after 'typename'}}
 212    typedef typename SimpleTemplate<int> templateT;// expected-warning {{expected a qualified name after 'typename'}}
 213
 214    pointerT pT = &t;
 215    *pT = 4;
 216
 217    int var;
 218    int k = typename var;// expected-error {{expected a qualified name after 'typename'}}
 219 }
 220
 221 template <typename T>
 222 struct TypenameWrongPlace {
 223   typename typedef T::D D;// expected-warning {{expected a qualified name after 'typename'}}
 224 };
 225
 226 extern TypenameWrongPlace<AAAA> PR16925;
 227
 228 __interface MicrosoftInterface;
 229 __interface MicrosoftInterface {
 230    void foo1() = 0; // expected-note {{overridden virtual function is here}}
 231    virtual void foo2() = 0;
 232 };
 233
 234 __interface MicrosoftDerivedInterface : public MicrosoftInterface {
 235   void foo1(); // expected-warning {{'foo1' overrides a member function but is not marked 'override'}}
 236   void foo2() override;
 237   void foo3();
 238 };
 239
 240 void interface_test() {
 241   MicrosoftInterface* a;
 242   a->foo1();
 243   MicrosoftDerivedInterface* b;
 244   b->foo2();
 245 }
 246
 247 __int64 x7 = __int64(0);
 248 _int64 x8 = _int64(0);
 249 static_assert(sizeof(_int64) == 8, "");
 250 static_assert(sizeof(_int32) == 4, "");
 251 static_assert(sizeof(_int16) == 2, "");
 252 static_assert(sizeof(_int8) == 1, "");
 253
 254 int __identifier(generic) = 3;
 255 int __identifier(int) = 4;
 256 struct __identifier(class) { __identifier(class) *__identifier(for); };
 257 __identifier(class) __identifier(struct) = { &__identifier(struct) };
 258
 259 int __identifier for; // expected-error {{missing '(' after '__identifier'}}
 260 int __identifier(else} = __identifier(for); // expected-error {{missing ')' after identifier}} expected-note {{to match this '('}}
 261 #define identifier_weird(x) __identifier(x
 262 int k = identifier_weird(if)); // expected-error {{use of undeclared identifier 'if'}}
 263
 264 extern int __identifier(and);
 265
 266 int __identifier("baz") = 0;
 267 int bar = baz;
 268
 269 void mangled_function();
 270 extern "C" void __identifier("?mangled_function@@YAXXZ")() {}
 271
 272 void f() {
 273   __identifier(() // expected-error {{cannot convert '(' token to an identifier}}
 274   __identifier(void) // expected-error {{use of undeclared identifier 'void'}}
 275   __identifier()) // expected-error {{cannot convert ')' token to an identifier}}
 276   // FIXME: We should pick a friendlier display name for this token kind.
 277   __identifier(1) // expected-error {{cannot convert <numeric_constant> token to an identifier}}
 278   __identifier(+) // expected-error {{cannot convert '+' token to an identifier}}
 279   __identifier(;) // expected-error {{cannot convert ';' token to an identifier}}
 280   __identifier("1"); // expected-error {{use of undeclared identifier '1'}}
 281   __identifier("+"); // expected-error {{use of undeclared identifier '+'}}
 282   __identifier(";"); // expected-error {{use of undeclared identifier ';'}}
 283 }
 284
 285 class inline_definition_pure_spec {
 286    virtual int f() = 0 { return 0; }// expected-warning {{function definition with pure-specifier is a Microsoft extension}}
 287    virtual int f2() = 0;
 288 };
 289
 290 struct pure_virtual_dtor {
 291   virtual ~pure_virtual_dtor() = 0;
 292 };
 293 pure_virtual_dtor::~pure_virtual_dtor() { }
 294
 295 struct pure_virtual_dtor_inline {
 296   virtual ~pure_virtual_dtor_inline() = 0 { }// expected-warning {{function definition with pure-specifier is a Microsoft extension}}
 297 };
 298
 299 template<typename T> struct pure_virtual_dtor_template {
 300   virtual ~pure_virtual_dtor_template() = 0;
 301 };
 302 template<typename T> pure_virtual_dtor_template<T>::~pure_virtual_dtor_template() {}
 303 template struct pure_virtual_dtor_template<int>;
 304
 305 template<typename T> struct pure_virtual_dtor_template_inline {
 306     virtual ~pure_virtual_dtor_template_inline() = 0 {}
 307     // expected-warning@-1 2{{function definition with pure-specifier is a Microsoft extension}}
 308 };
 309 template struct pure_virtual_dtor_template_inline<int>;
 310 // expected-note@-1 {{in instantiation of member function}}
 311
 312 int main () {
 313   // Necessary to force instantiation in -fdelayed-template-parsing mode.
 314   test_late_defined_uuid<int>();
 315   redundant_typename<int>();
 316   missing_template_keyword<int>();
 317 }
 318
 319 namespace access_protected_PTM {
 320   class A {
 321   protected:
 322     void f(); // expected-note {{must name member using the type of the current context 'access_protected_PTM::B'}}
 323   };
 324
 325   class B : public A{
 326   public:
 327     void test_access();
 328     static void test_access_static();
 329   };
 330
 331   void B::test_access() {
 332     &A::f; // expected-error {{'f' is a protected member of 'access_protected_PTM::A'}}
 333   }
 334
 335   void B::test_access_static() {
 336     &A::f;
 337   }
 338 }
 339
 340 namespace Inheritance {
 341   class __single_inheritance A;
 342   class __multiple_inheritance B;
 343   class __virtual_inheritance C;
 344 }
 345
 346 struct StructWithProperty {
 347   __declspec(property) int V0; // expected-error {{expected '(' after 'property'}}
 348   __declspec(property()) int V1; // expected-error {{property does not specify a getter or a putter}}
 349   __declspec(property(set)) int V2; // expected-error {{putter for property must be specified as 'put', not 'set'}} expected-error {{expected '=' after 'set'}}
 350   __declspec(property(ptu)) int V3; // expected-error {{missing 'get=' or 'put='}}
 351   __declspec(property(ptu=PutV)) int V4; // expected-error {{expected 'get' or 'put' in property declaration}}
 352   __declspec(property(get)) int V5; // expected-error {{expected '=' after 'get'}}
 353   __declspec(property(get&)) int V6; // expected-error {{expected '=' after 'get'}}
 354   __declspec(property(get=)) int V7; // expected-error {{expected name of accessor method}}
 355   __declspec(property(get=GetV)) int V8; // no-warning
 356   __declspec(property(get=GetV=)) int V9; // expected-error {{expected ',' or ')' at end of property accessor list}}
 357   __declspec(property(get=GetV,)) int V10; // expected-error {{expected 'get' or 'put' in property declaration}}
 358   __declspec(property(get=GetV,put=SetV)) int V11; // no-warning
 359   __declspec(property(get=GetV,put=SetV,get=GetV)) int V12; // expected-error {{property declaration specifies 'get' accessor twice}}
 360   __declspec(property(get=GetV)) int V13 = 3; // expected-error {{property declaration cannot have a default member initializer}}
 361
 362   int GetV() { return 123; }
 363   void SetV(int v) {}
 364 };
 365 void TestProperty() {
 366   StructWithProperty sp;
 367   sp.V8;
 368   sp.V8 = 0; // expected-error {{no setter defined for property 'V8'}}
 369   int i = sp.V11;
 370   sp.V11 = i++;
 371   sp.V11 += 8;
 372   sp.V11++;
 373   ++sp.V11;
 374 }
 375
 376 //expected-warning@+1 {{C++ operator 'and' (aka '&&') used as a macro name}}
 377 #define and foo
 378
 379 struct __declspec(uuid("00000000-0000-0000-C000-000000000046")) __declspec(novtable) IUnknown {};
 380
 381 typedef bool (__stdcall __stdcall *blarg)(int);
 382
 383 void local_callconv() {
 384   bool (__stdcall *p)(int);
 385 }
 386
 387 struct S7 {
 388         int foo() { return 12; }
 389         __declspec(property(get=foo) deprecated) int t; // expected-note {{'t' has been explicitly marked deprecated here}}
 390 };
 391
 392 // Technically, this is legal (though it does nothing)
 393 __declspec() void quux( void ) {
 394   struct S7 s;
 395   int i = s.t;  // expected-warning {{'t' is deprecated}}
 396 }
 397
 398 void *_alloca(int);
 399
 400 void foo(void) {
 401   __declspec(align(16)) int *buffer = (int *)_alloca(9);
 402 }
 403
 404 template <int *>
 405 struct NullptrArg {};
 406 NullptrArg<nullptr> a;
 407
 408 // Ignored type qualifiers after comma in declarator lists
 409 typedef int ignored_quals_dummy1, const volatile __ptr32 __ptr64 __w64 __unaligned __sptr __uptr ignored_quals1; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 410 typedef void(*ignored_quals_dummy2)(), __fastcall ignored_quals2; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 411 typedef void(*ignored_quals_dummy3)(), __stdcall ignored_quals3; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 412 typedef void(*ignored_quals_dummy4)(), __thiscall ignored_quals4; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 413 typedef void(*ignored_quals_dummy5)(), __cdecl ignored_quals5; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 414 typedef void(*ignored_quals_dummy6)(), __vectorcall ignored_quals6; // expected-warning {{qualifiers after comma in declarator list are ignored}}
 415
 416 namespace {
 417 bool f(int);
 418 template <typename T>
 419 struct A {
 420   constexpr A(T t) {
 421     __assume(f(t)); // expected-warning{{the argument to '__assume' has side effects that will be discarded}}
 422   }
 423   constexpr bool g() { return false; }
 424 };
 425 constexpr A<int> h() {
 426   A<int> b(0); // expected-note {{in instantiation of member function}}
 427   return b;
 428 }
 429 static_assert(h().g() == false, "");
 430 }
 431
 432 namespace {
 433 __declspec(align(16)) struct align_before_key1 {};
 434 __declspec(align(16)) struct align_before_key2 {} align_before_key2_var;
 435 __declspec(align(16)) struct align_before_key3 {} *align_before_key3_var;
 436 static_assert(__alignof(struct align_before_key1) == 16, "");
 437 static_assert(__alignof(struct align_before_key2) == 16, "");
 438 static_assert(__alignof(struct align_before_key3) == 16, "");
 439 }
 440
 441 namespace PR24027 {
 442 struct S {
 443   template <typename T>
 444   S(T);
 445 } f([] {});
 446 }
 447
 448 namespace pr36638 {
 449 // Make sure we accept __unaligned method qualifiers on member function
 450 // pointers.
 451 struct A;
 452 void (A::*mp1)(int) __unaligned;
 453 }
 454
 455 namespace enum_class {
 456   // MSVC allows opaque-enum-declaration syntax anywhere an
 457   // elaborated-type-specifier can appear.
 458   // FIXME: Most of these are missing warnings.
 459   enum E0 *p0; // expected-warning {{Microsoft extension}}
 460   enum class E1 : int *p1;
 461   enum E2 : int *p2;
 462   enum class E3 *p3;
 463   auto f4() -> enum class E4 { return {}; }
 464   auto f5() -> enum E5 : int { return {}; } // FIXME: MSVC rejects this and crashes if the body is {}.
 465   auto f6() -> enum E6 { return {}; } // expected-warning {{Microsoft extension}}
 466
 467   // MSVC does not perform disambiguation for a colon that could introduce an
 468   // enum-base or a bit-field.
 469   enum E {};
 470   struct S {
 471     enum E : int(1); // expected-error {{anonymous bit-field}}
 472     enum E : int : 1; // OK, bit-field
 473     enum F : int a = {}; // OK, default member initializer
 474     // MSVC produces a "C4353 constant 0 as function expression" for this,
 475     // considering the final {} to be part of the bit-width. We follow P0683R1
 476     // and treat it as a default member initializer.
 477     enum E : int : int{}{}; // expected-error {{anonymous bit-field cannot have a default member initializer}}
 478   };
 479 }