1 // RUN: %clang_cc1 -triple i686-win32 -fsyntax-only -fms-extensions -verify -std=c++11 -Wunsupported-dll-base-class-template -DMS %s
2 // RUN: %clang_cc1 -triple x86_64-win32 -fsyntax-only -fms-extensions -verify -std=c++1y -Wunsupported-dll-base-class-template -DMS %s
3 // RUN: %clang_cc1 -triple i686-mingw32 -fsyntax-only -fms-extensions -verify -std=c++1y -Wunsupported-dll-base-class-template %s
4 // RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -fms-extensions -verify -std=c++11 -Wunsupported-dll-base-class-template %s
5
6 // Helper structs to make templates more expressive.
7 struct ImplicitInst_Exported {};
8 struct ExplicitDecl_Exported {};
9 struct ExplicitInst_Exported {};
10 struct ExplicitSpec_Exported {};
11 struct ExplicitSpec_Def_Exported {};
12 struct ExplicitSpec_InlineDef_Exported {};
13 struct ExplicitSpec_NotExported {};
14 namespace { struct Internal {}; }
15 struct External { int v; };
16
17
18 // Invalid usage.
19 __declspec(dllexport) typedef int typedef1;
20 // expected-warning@-1{{'dllexport' attribute only applies to functions, variables, classes, and Objective-C interfaces}}
21 typedef __declspec(dllexport) int typedef2;
22 // expected-warning@-1{{'dllexport' attribute only applies to}}
23 typedef int __declspec(dllexport) typedef3;
24 // expected-warning@-1{{'dllexport' attribute only applies to}}
25 typedef __declspec(dllexport) void (*FunTy)();
26 // expected-warning@-1{{'dllexport' attribute only applies to}}
27 enum __declspec(dllexport) Enum {};
28 // expected-warning@-1{{'dllexport' attribute only applies to}}
29 #if __has_feature(cxx_strong_enums)
30 enum class __declspec(dllexport) EnumClass {};
31 // expected-warning@-1{{'dllexport' attribute only applies to}}
32 #endif
33
34
35
36 //===----------------------------------------------------------------------===//
37 // Globals
38 //===----------------------------------------------------------------------===//
39
40 // Export declaration.
41 __declspec(dllexport) extern int ExternGlobalDecl;
42
43 // dllexport implies a definition.
44 __declspec(dllexport) int GlobalDef;
45
46 // Export definition.
47 __declspec(dllexport) int GlobalInit1 = 1;
48 int __declspec(dllexport) GlobalInit2 = 1;
49
50 // Declare, then export definition.
51 __declspec(dllexport) extern int GlobalDeclInit;
52 int GlobalDeclInit = 1;
53
54 // Redeclarations
55 __declspec(dllexport) extern int GlobalRedecl1;
56 __declspec(dllexport) int GlobalRedecl1;
57
58 __declspec(dllexport) extern int GlobalRedecl2;
59 int GlobalRedecl2;
60
61 extern int GlobalRedecl3; // expected-note{{previous declaration is here}}
62 __declspec(dllexport) extern int GlobalRedecl3; // expected-warning{{redeclaration of 'GlobalRedecl3' should not add 'dllexport' attribute}}
63
64 extern "C" {
65 extern int GlobalRedecl4; // expected-note{{previous declaration is here}}
66 __declspec(dllexport) extern int GlobalRedecl4; // expected-warning{{redeclaration of 'GlobalRedecl4' should not add 'dllexport' attribute}}
67 }
68
69 // External linkage is required.
70 __declspec(dllexport) static int StaticGlobal; // expected-error{{'StaticGlobal' must have external linkage when declared 'dllexport'}}
71 __declspec(dllexport) Internal InternalTypeGlobal; // expected-error{{'InternalTypeGlobal' must have external linkage when declared 'dllexport'}}
72 #ifndef MS
73 namespace { __declspec(dllexport) int InternalGlobal; } // expected-error{{'(anonymous namespace)::InternalGlobal' must have external linkage when declared 'dllexport'}}
74 #endif
75 namespace ns { __declspec(dllexport) int ExternalGlobal; }
76
77 __declspec(dllexport) auto InternalAutoTypeGlobal = Internal(); // expected-error{{'InternalAutoTypeGlobal' must have external linkage when declared 'dllexport'}}
78 __declspec(dllexport) auto ExternalAutoTypeGlobal = External();
79
80 // Thread local variables are invalid.
81 __declspec(dllexport) __thread int ThreadLocalGlobal; // expected-error{{'ThreadLocalGlobal' cannot be thread local when declared 'dllexport'}}
82 // But a static local TLS var in an export function is OK.
ExportedInlineWithThreadLocal()83 inline void __declspec(dllexport) ExportedInlineWithThreadLocal() {
84 static __thread int OK; // no-error
85 }
86
87 // Export in local scope.
functionScope()88 void functionScope() {
89 __declspec(dllexport) int LocalVarDecl; // expected-error{{'LocalVarDecl' must have external linkage when declared 'dllexport'}}
90 __declspec(dllexport) int LocalVarDef = 1; // expected-error{{'LocalVarDef' must have external linkage when declared 'dllexport'}}
91 __declspec(dllexport) extern int ExternLocalVarDecl;
92 __declspec(dllexport) static int StaticLocalVar; // expected-error{{'StaticLocalVar' must have external linkage when declared 'dllexport'}}
93 }
94
95
96
97 //===----------------------------------------------------------------------===//
98 // Variable templates
99 //===----------------------------------------------------------------------===//
100 #if __has_feature(cxx_variable_templates)
101
102 // Export declaration.
103 template<typename T> __declspec(dllexport) extern int ExternVarTmplDecl;
104
105 // dllexport implies a definition.
106 template<typename T> __declspec(dllexport) int VarTmplDef;
107
108 // Export definition.
109 template<typename T> __declspec(dllexport) int VarTmplInit1 = 1;
110 template<typename T> int __declspec(dllexport) VarTmplInit2 = 1;
111
112 // Declare, then export definition.
113 template<typename T> __declspec(dllexport) extern int VarTmplDeclInit;
114 template<typename T> int VarTmplDeclInit = 1;
115
116 // Redeclarations
117 template<typename T> __declspec(dllexport) extern int VarTmplRedecl1;
118 template<typename T> __declspec(dllexport) int VarTmplRedecl1 = 1;
119
120 template<typename T> __declspec(dllexport) extern int VarTmplRedecl2;
121 template<typename T> int VarTmplRedecl2 = 1;
122
123 template<typename T> extern int VarTmplRedecl3; // expected-note{{previous declaration is here}}
124 template<typename T> __declspec(dllexport) extern int VarTmplRedecl3; // expected-error{{redeclaration of 'VarTmplRedecl3' cannot add 'dllexport' attribute}}
125
126 // External linkage is required.
127 template<typename T> __declspec(dllexport) static int StaticVarTmpl; // expected-error{{'StaticVarTmpl' must have external linkage when declared 'dllexport'}}
128 template<typename T> __declspec(dllexport) Internal InternalTypeVarTmpl; // expected-error{{'InternalTypeVarTmpl' must have external linkage when declared 'dllexport'}}
129 #ifndef MS
130 namespace { template<typename T> __declspec(dllexport) int InternalVarTmpl; } // expected-error{{'(anonymous namespace)::InternalVarTmpl' must have external linkage when declared 'dllexport'}}
131 #endif
132 namespace ns { template<typename T> __declspec(dllexport) int ExternalVarTmpl = 1; }
133
134 template<typename T> __declspec(dllexport) auto InternalAutoTypeVarTmpl = Internal(); // expected-error{{'InternalAutoTypeVarTmpl' must have external linkage when declared 'dllexport'}}
135 template<typename T> __declspec(dllexport) auto ExternalAutoTypeVarTmpl = External();
136 template External ExternalAutoTypeVarTmpl<ExplicitInst_Exported>;
137
138
139 template<typename T> int VarTmpl = 1;
140 template<typename T> __declspec(dllexport) int ExportedVarTmpl = 1;
141
142 // Export implicit instantiation of an exported variable template.
useVarTmpl()143 int useVarTmpl() { return ExportedVarTmpl<ImplicitInst_Exported>; }
144
145 // Export explicit instantiation declaration of an exported variable template.
146 extern template int ExportedVarTmpl<ExplicitDecl_Exported>;
147 template int ExportedVarTmpl<ExplicitDecl_Exported>;
148
149 // Export explicit instantiation definition of an exported variable template.
150 template __declspec(dllexport) int ExportedVarTmpl<ExplicitInst_Exported>;
151
152 // Export specialization of an exported variable template.
153 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Exported>;
154 template<> __declspec(dllexport) int ExportedVarTmpl<ExplicitSpec_Def_Exported> = 1;
155
156 // Not exporting specialization of an exported variable template without
157 // explicit dllexport.
158 template<> int ExportedVarTmpl<ExplicitSpec_NotExported>;
159
160
161 // Export explicit instantiation declaration of a non-exported variable template.
162 extern template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
163 template __declspec(dllexport) int VarTmpl<ExplicitDecl_Exported>;
164
165 // Export explicit instantiation definition of a non-exported variable template.
166 template __declspec(dllexport) int VarTmpl<ExplicitInst_Exported>;
167
168 // Export specialization of a non-exported variable template.
169 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Exported>;
170 template<> __declspec(dllexport) int VarTmpl<ExplicitSpec_Def_Exported> = 1;
171
172 #endif // __has_feature(cxx_variable_templates)
173
174
175
176 //===----------------------------------------------------------------------===//
177 // Functions
178 //===----------------------------------------------------------------------===//
179
180 // Export function declaration. Check different placements.
181 __attribute__((dllexport)) void decl1A(); // Sanity check with __attribute__
182 __declspec(dllexport) void decl1B();
183
184 void __attribute__((dllexport)) decl2A();
185 void __declspec(dllexport) decl2B();
186
187 // Export function definition.
def()188 __declspec(dllexport) void def() {}
189
190 // extern "C"
externC()191 extern "C" __declspec(dllexport) void externC() {}
192
193 // Export inline function.
inlineFunc1()194 __declspec(dllexport) inline void inlineFunc1() {}
inlineFunc2()195 inline void __attribute__((dllexport)) inlineFunc2() {}
196
197 __declspec(dllexport) inline void inlineDecl();
inlineDecl()198 void inlineDecl() {}
199
200 __declspec(dllexport) void inlineDef();
inlineDef()201 inline void inlineDef() {}
202
203 // Redeclarations
204 __declspec(dllexport) void redecl1();
redecl1()205 __declspec(dllexport) void redecl1() {}
206
207 __declspec(dllexport) void redecl2();
redecl2()208 void redecl2() {}
209
210 void redecl3(); // expected-note{{previous declaration is here}}
211 __declspec(dllexport) void redecl3(); // expected-warning{{redeclaration of 'redecl3' should not add 'dllexport' attribute}}
212
213 extern "C" {
214 void redecl4(); // expected-note{{previous declaration is here}}
215 __declspec(dllexport) void redecl4(); // expected-warning{{redeclaration of 'redecl4' should not add 'dllexport' attribute}}
216 }
217
218 void redecl5(); // expected-note{{previous declaration is here}}
redecl5()219 __declspec(dllexport) inline void redecl5() {} // expected-warning{{redeclaration of 'redecl5' should not add 'dllexport' attribute}}
220
221 // Friend functions
222 struct FuncFriend {
223 friend __declspec(dllexport) void friend1();
224 friend __declspec(dllexport) void friend2();
225 friend void friend3(); // expected-note{{previous declaration is here}}
226 friend void friend4(); // expected-note{{previous declaration is here}}
227 };
friend1()228 __declspec(dllexport) void friend1() {}
friend2()229 void friend2() {}
friend3()230 __declspec(dllexport) void friend3() {} // expected-warning{{redeclaration of 'friend3' should not add 'dllexport' attribute}}
friend4()231 __declspec(dllexport) inline void friend4() {} // expected-warning{{redeclaration of 'friend4' should not add 'dllexport' attribute}}
232
233 // Implicit declarations can be redeclared with dllexport.
234 __declspec(dllexport) void* operator new(__SIZE_TYPE__ n);
235
236 // External linkage is required.
237 __declspec(dllexport) static int staticFunc(); // expected-error{{'staticFunc' must have external linkage when declared 'dllexport'}}
238 __declspec(dllexport) Internal internalRetFunc(); // expected-error{{'internalRetFunc' must have external linkage when declared 'dllexport'}}
internalFunc()239 namespace { __declspec(dllexport) void internalFunc() {} } // expected-error{{'(anonymous namespace)::internalFunc' must have external linkage when declared 'dllexport'}}
externalFunc()240 namespace ns { __declspec(dllexport) void externalFunc() {} }
241
242 // Export deleted function.
243 __declspec(dllexport) void deletedFunc() = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
244 __declspec(dllexport) inline void deletedInlineFunc() = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
245
246
247
248 //===----------------------------------------------------------------------===//
249 // Function templates
250 //===----------------------------------------------------------------------===//
251
252 // Export function template declaration. Check different placements.
253 template<typename T> __declspec(dllexport) void funcTmplDecl1();
254 template<typename T> void __declspec(dllexport) funcTmplDecl2();
255
256 // Export function template definition.
funcTmplDef()257 template<typename T> __declspec(dllexport) void funcTmplDef() {}
258
259 // Export inline function template.
inlineFuncTmpl1()260 template<typename T> __declspec(dllexport) inline void inlineFuncTmpl1() {}
inlineFuncTmpl2()261 template<typename T> inline void __attribute__((dllexport)) inlineFuncTmpl2() {}
262
263 template<typename T> __declspec(dllexport) inline void inlineFuncTmplDecl();
inlineFuncTmplDecl()264 template<typename T> void inlineFuncTmplDecl() {}
265
266 template<typename T> __declspec(dllexport) void inlineFuncTmplDef();
inlineFuncTmplDef()267 template<typename T> inline void inlineFuncTmplDef() {}
268
269 // Redeclarations
270 template<typename T> __declspec(dllexport) void funcTmplRedecl1();
funcTmplRedecl1()271 template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
272
273 template<typename T> __declspec(dllexport) void funcTmplRedecl2();
funcTmplRedecl2()274 template<typename T> void funcTmplRedecl2() {}
275
276 template<typename T> void funcTmplRedecl3(); // expected-note{{previous declaration is here}}
277 template<typename T> __declspec(dllexport) void funcTmplRedecl3(); // expected-error{{redeclaration of 'funcTmplRedecl3' cannot add 'dllexport' attribute}}
278
279 template<typename T> void funcTmplRedecl4(); // expected-note{{previous declaration is here}}
funcTmplRedecl4()280 template<typename T> __declspec(dllexport) inline void funcTmplRedecl4() {} // expected-error{{redeclaration of 'funcTmplRedecl4' cannot add 'dllexport' attribute}}
281
282 // Function template friends
283 struct FuncTmplFriend {
284 template<typename T> friend __declspec(dllexport) void funcTmplFriend1();
285 template<typename T> friend __declspec(dllexport) void funcTmplFriend2();
286 template<typename T> friend void funcTmplFriend3(); // expected-note{{previous declaration is here}}
287 template<typename T> friend void funcTmplFriend4(); // expected-note{{previous declaration is here}}
288 };
funcTmplFriend1()289 template<typename T> __declspec(dllexport) void funcTmplFriend1() {}
funcTmplFriend2()290 template<typename T> void funcTmplFriend2() {}
funcTmplFriend3()291 template<typename T> __declspec(dllexport) void funcTmplFriend3() {} // expected-error{{redeclaration of 'funcTmplFriend3' cannot add 'dllexport' attribute}}
funcTmplFriend4()292 template<typename T> __declspec(dllexport) inline void funcTmplFriend4() {} // expected-error{{redeclaration of 'funcTmplFriend4' cannot add 'dllexport' attribute}}
293
294 // External linkage is required.
295 template<typename T> __declspec(dllexport) static int staticFuncTmpl(); // expected-error{{'staticFuncTmpl' must have external linkage when declared 'dllexport'}}
296 template<typename T> __declspec(dllexport) Internal internalRetFuncTmpl(); // expected-error{{'internalRetFuncTmpl' must have external linkage when declared 'dllexport'}}
297 namespace { template<typename T> __declspec(dllexport) void internalFuncTmpl(); } // expected-error{{'(anonymous namespace)::internalFuncTmpl' must have external linkage when declared 'dllexport'}}
298 namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl(); }
299
300
funcTmpl()301 template<typename T> void funcTmpl() {}
302 template<typename T> __declspec(dllexport) void exportedFuncTmplDecl();
exportedFuncTmpl()303 template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
304
305 // Export implicit instantiation of an exported function template.
useFunTmplDecl()306 void useFunTmplDecl() { exportedFuncTmplDecl<ImplicitInst_Exported>(); }
useFunTmplDef()307 void useFunTmplDef() { exportedFuncTmpl<ImplicitInst_Exported>(); }
308
309 // Export explicit instantiation declaration of an exported function template.
310 extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
311 template void exportedFuncTmpl<ExplicitDecl_Exported>();
312
313 // Export explicit instantiation definition of an exported function template.
314 template void exportedFuncTmpl<ExplicitInst_Exported>();
315
316 // Export specialization of an exported function template.
317 template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Exported>();
exportedFuncTmpl()318 template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
exportedFuncTmpl()319 template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {}
320
321 // Not exporting specialization of an exported function template without
322 // explicit dllexport.
exportedFuncTmpl()323 template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
324
325
326 // Export explicit instantiation declaration of a non-exported function template.
327 extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
328 template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
329
330 // Export explicit instantiation definition of a non-exported function template.
331 template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
332
333 // Export specialization of a non-exported function template.
334 template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Exported>();
funcTmpl()335 template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
funcTmpl()336 template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {}
337
338
339
340 //===----------------------------------------------------------------------===//
341 // Classes
342 //===----------------------------------------------------------------------===//
343
344 namespace {
345 struct __declspec(dllexport) AnonymousClass {}; // expected-error{{(anonymous namespace)::AnonymousClass' must have external linkage when declared 'dllexport'}}
346 }
347
348 class __declspec(dllexport) ClassDecl;
349
350 class __declspec(dllexport) ClassDef {};
351
352 #ifdef MS
353 // expected-warning@+3{{'dllexport' attribute ignored}}
354 #endif
355 template <typename T> struct PartiallySpecializedClassTemplate {};
f()356 template <typename T> struct __declspec(dllexport) PartiallySpecializedClassTemplate<T*> { void f() {} };
357
358 template <typename T> struct ExpliciallySpecializedClassTemplate {};
f()359 template <> struct __declspec(dllexport) ExpliciallySpecializedClassTemplate<int> { void f() {} };
360
361 // Don't instantiate class members of implicitly instantiated templates, even if they are exported.
362 struct IncompleteType;
363 template <typename T> struct __declspec(dllexport) ImplicitlyInstantiatedExportedTemplate {
f()364 int f() { return sizeof(T); } // no-error
365 };
366 ImplicitlyInstantiatedExportedTemplate<IncompleteType> implicitlyInstantiatedExportedTemplate;
367
368 // Don't instantiate class members of templates with explicit instantiation declarations, even if they are exported.
369 struct IncompleteType2;
370 #ifdef MS
371 // expected-note@+2{{attribute is here}}
372 #endif
373 template <typename T> struct __declspec(dllexport) ExportedTemplateWithExplicitInstantiationDecl {
f()374 int f() { return sizeof(T); } // no-error
375 };
376 #ifdef MS
377 // expected-warning@+2{{explicit instantiation declaration should not be 'dllexport'}}
378 #endif
379 extern template struct ExportedTemplateWithExplicitInstantiationDecl<IncompleteType2>;
380
381 // Instantiate class members for explicitly instantiated exported templates.
382 struct IncompleteType3; // expected-note{{forward declaration of 'IncompleteType3'}}
383 template <typename T> struct __declspec(dllexport) ExplicitlyInstantiatedExportedTemplate {
f()384 int f() { return sizeof(T); } // expected-error{{invalid application of 'sizeof' to an incomplete type 'IncompleteType3'}}
385 };
386 template struct ExplicitlyInstantiatedExportedTemplate<IncompleteType3>; // expected-note{{in instantiation of member function 'ExplicitlyInstantiatedExportedTemplate<IncompleteType3>::f' requested here}}
387
388 // In MS mode, instantiate members of class templates that are base classes of exported classes.
389 #ifdef MS
390 // expected-note@+3{{forward declaration of 'IncompleteType4'}}
391 // expected-note@+3{{in instantiation of member function 'BaseClassTemplateOfExportedClass<IncompleteType4>::f' requested here}}
392 #endif
393 struct IncompleteType4;
394 template <typename T> struct BaseClassTemplateOfExportedClass {
395 #ifdef MS
396 // expected-error@+2{{invalid application of 'sizeof' to an incomplete type 'IncompleteType4'}}
397 #endif
fBaseClassTemplateOfExportedClass398 int f() { return sizeof(T); };
399 };
400 struct __declspec(dllexport) ExportedBaseClass : public BaseClassTemplateOfExportedClass<IncompleteType4> {};
401
402 // Don't instantiate members of explicitly exported class templates that are base classes of exported classes.
403 struct IncompleteType5;
404 template <typename T> struct __declspec(dllexport) ExportedBaseClassTemplateOfExportedClass {
405 int f() { return sizeof(T); }; // no-error
406 };
407 struct __declspec(dllexport) ExportedBaseClass2 : public ExportedBaseClassTemplateOfExportedClass<IncompleteType5> {};
408
409 // Warn about explicit instantiation declarations of dllexport classes.
410 template <typename T> struct ExplicitInstantiationDeclTemplate {};
411 #ifdef MS
412 // expected-warning@+2{{explicit instantiation declaration should not be 'dllexport'}} expected-note@+2{{attribute is here}}
413 #endif
414 extern template struct __declspec(dllexport) ExplicitInstantiationDeclTemplate<int>;
415
416 template <typename T> struct __declspec(dllexport) ExplicitInstantiationDeclExportedTemplate {};
417 #ifdef MS
418 // expected-note@-2{{attribute is here}}
419 // expected-warning@+2{{explicit instantiation declaration should not be 'dllexport'}}
420 #endif
421 extern template struct ExplicitInstantiationDeclExportedTemplate<int>;
422
423 namespace { struct InternalLinkageType {}; }
424 struct __declspec(dllexport) PR23308 {
425 void f(InternalLinkageType*);
426 };
427 void PR23308::f(InternalLinkageType*) {} // No error; we don't try to export f because it has internal linkage.
428
429 //===----------------------------------------------------------------------===//
430 // Classes with template base classes
431 //===----------------------------------------------------------------------===//
432
433 template <typename T> class ClassTemplate {};
434 template <typename T> class __declspec(dllexport) ExportedClassTemplate {};
435 template <typename T> class __declspec(dllimport) ImportedClassTemplate {};
436
437 template <typename T> struct ExplicitlySpecializedTemplate { void func() {} };
438 #ifdef MS
439 // expected-note@+2{{class template 'ExplicitlySpecializedTemplate<int>' was explicitly specialized here}}
440 #endif
441 template <> struct ExplicitlySpecializedTemplate<int> { void func() {} };
442 template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} };
443 template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func() {} };
444 template <typename T> struct ExplicitlyImportSpecializedTemplate { void func() {} };
445 template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func() {} };
446
447 template <typename T> struct ExplicitlyInstantiatedTemplate { void func() {} };
448 #ifdef MS
449 // expected-note@+2{{class template 'ExplicitlyInstantiatedTemplate<int>' was instantiated here}}
450 #endif
451 template struct ExplicitlyInstantiatedTemplate<int>;
452 template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func() {} };
453 template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>;
454 template <typename T> struct ExplicitlyExportDeclaredInstantiatedTemplate { void func() {} };
455 extern template struct ExplicitlyExportDeclaredInstantiatedTemplate<int>;
456 #ifndef MS
457 // expected-warning@+2{{'dllexport' attribute ignored on explicit instantiation definition}}
458 #endif
459 template struct __declspec(dllexport) ExplicitlyExportDeclaredInstantiatedTemplate<int>;
460 template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func() {} };
461 template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>;
462
463 // ClassTemplate<int> gets exported.
464 class __declspec(dllexport) DerivedFromTemplate : public ClassTemplate<int> {};
465
466 // ClassTemplate<int> is already exported.
467 class __declspec(dllexport) DerivedFromTemplate2 : public ClassTemplate<int> {};
468
469 // ExportedTemplate is explicitly exported.
470 class __declspec(dllexport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {};
471
472 // ImportedTemplate is explicitly imported.
473 class __declspec(dllexport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
474
475 class DerivedFromTemplateD : public ClassTemplate<double> {};
476 // Base class previously implicitly instantiated without attribute; it will get propagated.
477 class __declspec(dllexport) DerivedFromTemplateD2 : public ClassTemplate<double> {};
478
479 // Base class has explicit instantiation declaration; the attribute will get propagated.
480 extern template class ClassTemplate<float>;
481 class __declspec(dllexport) DerivedFromTemplateF : public ClassTemplate<float> {};
482
483 class __declspec(dllexport) DerivedFromTemplateB : public ClassTemplate<bool> {};
484 // The second derived class doesn't change anything, the attribute that was propagated first wins.
485 class __declspec(dllimport) DerivedFromTemplateB2 : public ClassTemplate<bool> {};
486
487 #ifdef MS
488 // expected-warning@+3{{propagating dll attribute to explicitly specialized base class template without dll attribute is not supported}}
489 // expected-note@+2{{attribute is here}}
490 #endif
491 struct __declspec(dllexport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {};
492
493 // Base class alredy specialized with export attribute.
494 struct __declspec(dllexport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {};
495
496 // Base class already specialized with import attribute.
497 struct __declspec(dllexport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {};
498
499 #ifdef MS
500 // expected-warning@+3{{propagating dll attribute to already instantiated base class template without dll attribute is not supported}}
501 // expected-note@+2{{attribute is here}}
502 #endif
503 struct __declspec(dllexport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {};
504
505 // Base class already instantiated with export attribute.
506 struct __declspec(dllexport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {};
507
508 // Base class already instantiated with import attribute.
509 struct __declspec(dllexport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {};
510
511 template <typename T> struct ExplicitInstantiationDeclTemplateBase { void func() {} };
512 extern template struct ExplicitInstantiationDeclTemplateBase<int>;
513 struct __declspec(dllexport) DerivedFromExplicitInstantiationDeclTemplateBase : public ExplicitInstantiationDeclTemplateBase<int> {};
514
515
516 //===----------------------------------------------------------------------===//
517 // Precedence
518 //===----------------------------------------------------------------------===//
519
520 // dllexport takes precedence over dllimport if both are specified.
521 __attribute__((dllimport, dllexport)) extern int PrecedenceExternGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
522 __declspec(dllimport) __declspec(dllexport) extern int PrecedenceExternGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
523
524 __attribute__((dllexport, dllimport)) extern int PrecedenceExternGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
525 __declspec(dllexport) __declspec(dllimport) extern int PrecedenceExternGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
526
527 __attribute__((dllimport, dllexport)) int PrecedenceGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
528 __declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
529
530 __attribute__((dllexport, dllimport)) int PrecedenceGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
531 __declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
532
533 __declspec(dllexport) extern int PrecedenceExternGlobalRedecl1;
534 __declspec(dllimport) extern int PrecedenceExternGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
535
536 __declspec(dllimport) extern int PrecedenceExternGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
537 __declspec(dllexport) extern int PrecedenceExternGlobalRedecl2;
538
539 __declspec(dllexport) extern int PrecedenceGlobalRedecl1;
540 __declspec(dllimport) int PrecedenceGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
541
542 __declspec(dllimport) extern int PrecedenceGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
543 __declspec(dllexport) int PrecedenceGlobalRedecl2;
544
545 void __attribute__((dllimport, dllexport)) precedence1A() {} // expected-warning{{'dllimport' attribute ignored}}
546 void __declspec(dllimport) __declspec(dllexport) precedence1B() {} // expected-warning{{'dllimport' attribute ignored}}
547
548 void __attribute__((dllexport, dllimport)) precedence2A() {} // expected-warning{{'dllimport' attribute ignored}}
549 void __declspec(dllexport) __declspec(dllimport) precedence2B() {} // expected-warning{{'dllimport' attribute ignored}}
550
551 void __declspec(dllimport) precedenceRedecl1(); // expected-warning{{'dllimport' attribute ignored}}
552 void __declspec(dllexport) precedenceRedecl1() {}
553
554 void __declspec(dllexport) precedenceRedecl2();
555 void __declspec(dllimport) precedenceRedecl2() {} // expected-warning{{'dllimport' attribute ignored}}
556
557
558
559 //===----------------------------------------------------------------------===//
560 // Class members
561 //===----------------------------------------------------------------------===//
562
563 // Export individual members of a class.
564 struct ExportMembers {
565 struct Nested {
566 __declspec(dllexport) void normalDef();
567 };
568
569 __declspec(dllexport) void normalDecl();
570 __declspec(dllexport) void normalDef();
571 __declspec(dllexport) void normalInclass() {}
572 __declspec(dllexport) void normalInlineDef();
573 __declspec(dllexport) inline void normalInlineDecl();
574 __declspec(dllexport) virtual void virtualDecl();
575 __declspec(dllexport) virtual void virtualDef();
576 __declspec(dllexport) virtual void virtualInclass() {}
577 __declspec(dllexport) virtual void virtualInlineDef();
578 __declspec(dllexport) virtual inline void virtualInlineDecl();
579 __declspec(dllexport) static void staticDecl();
580 __declspec(dllexport) static void staticDef();
581 __declspec(dllexport) static void staticInclass() {}
582 __declspec(dllexport) static void staticInlineDef();
583 __declspec(dllexport) static inline void staticInlineDecl();
584
585 protected:
586 __declspec(dllexport) void protectedDef();
587 private:
588 __declspec(dllexport) void privateDef();
589 public:
590
591 __declspec(dllexport) int Field; // expected-warning{{'dllexport' attribute only applies to}}
592 __declspec(dllexport) static int StaticField;
593 __declspec(dllexport) static int StaticFieldDef;
594 __declspec(dllexport) static const int StaticConstField;
595 __declspec(dllexport) static const int StaticConstFieldDef;
596 __declspec(dllexport) static const int StaticConstFieldEqualInit = 1;
597 __declspec(dllexport) static const int StaticConstFieldBraceInit{1};
598 __declspec(dllexport) constexpr static int ConstexprField = 1;
599 __declspec(dllexport) constexpr static int ConstexprFieldDef = 1;
600 };
601
602 void ExportMembers::Nested::normalDef() {}
603 void ExportMembers::normalDef() {}
604 inline void ExportMembers::normalInlineDef() {}
605 void ExportMembers::normalInlineDecl() {}
606 void ExportMembers::virtualDef() {}
607 inline void ExportMembers::virtualInlineDef() {}
608 void ExportMembers::virtualInlineDecl() {}
609 void ExportMembers::staticDef() {}
610 inline void ExportMembers::staticInlineDef() {}
611 void ExportMembers::staticInlineDecl() {}
612 void ExportMembers::protectedDef() {}
613 void ExportMembers::privateDef() {}
614
615 int ExportMembers::StaticFieldDef;
616 const int ExportMembers::StaticConstFieldDef = 1;
617 constexpr int ExportMembers::ConstexprFieldDef;
618
619
620 // Export on member definitions.
621 struct ExportMemberDefs {
622 __declspec(dllexport) void normalDef();
623 __declspec(dllexport) void normalInlineDef();
624 __declspec(dllexport) inline void normalInlineDecl();
625 __declspec(dllexport) virtual void virtualDef();
626 __declspec(dllexport) virtual void virtualInlineDef();
627 __declspec(dllexport) virtual inline void virtualInlineDecl();
628 __declspec(dllexport) static void staticDef();
629 __declspec(dllexport) static void staticInlineDef();
630 __declspec(dllexport) static inline void staticInlineDecl();
631
632 __declspec(dllexport) static int StaticField;
633 __declspec(dllexport) static const int StaticConstField;
634 __declspec(dllexport) constexpr static int ConstexprField = 1;
635 };
636
637 __declspec(dllexport) void ExportMemberDefs::normalDef() {}
638 __declspec(dllexport) inline void ExportMemberDefs::normalInlineDef() {}
639 __declspec(dllexport) void ExportMemberDefs::normalInlineDecl() {}
640 __declspec(dllexport) void ExportMemberDefs::virtualDef() {}
641 __declspec(dllexport) inline void ExportMemberDefs::virtualInlineDef() {}
642 __declspec(dllexport) void ExportMemberDefs::virtualInlineDecl() {}
643 __declspec(dllexport) void ExportMemberDefs::staticDef() {}
644 __declspec(dllexport) inline void ExportMemberDefs::staticInlineDef() {}
645 __declspec(dllexport) void ExportMemberDefs::staticInlineDecl() {}
646
647 __declspec(dllexport) int ExportMemberDefs::StaticField;
648 __declspec(dllexport) const int ExportMemberDefs::StaticConstField = 1;
649 __declspec(dllexport) constexpr int ExportMemberDefs::ConstexprField;
650
651
652 // Export special member functions.
653 struct ExportSpecials {
654 __declspec(dllexport) ExportSpecials() {}
655 __declspec(dllexport) ~ExportSpecials();
656 __declspec(dllexport) inline ExportSpecials(const ExportSpecials&);
657 __declspec(dllexport) ExportSpecials& operator=(const ExportSpecials&);
658 __declspec(dllexport) ExportSpecials(ExportSpecials&&);
659 __declspec(dllexport) ExportSpecials& operator=(ExportSpecials&&);
660 };
661
662 ExportSpecials::~ExportSpecials() {}
663 ExportSpecials::ExportSpecials(const ExportSpecials&) {}
664 inline ExportSpecials& ExportSpecials::operator=(const ExportSpecials&) { return *this; }
665 ExportSpecials::ExportSpecials(ExportSpecials&&) {}
666 ExportSpecials& ExportSpecials::operator=(ExportSpecials&&) { return *this; }
667
668
669 // Export allocation functions.
670 extern "C" void* malloc(__SIZE_TYPE__ size);
671 extern "C" void free(void* p);
672 struct ExportAlloc {
673 __declspec(dllexport) void* operator new(__SIZE_TYPE__);
674 __declspec(dllexport) void* operator new[](__SIZE_TYPE__);
675 __declspec(dllexport) void operator delete(void*);
676 __declspec(dllexport) void operator delete[](void*);
677 };
678 void* ExportAlloc::operator new(__SIZE_TYPE__ n) { return malloc(n); }
679 void* ExportAlloc::operator new[](__SIZE_TYPE__ n) { return malloc(n); }
680 void ExportAlloc::operator delete(void* p) { free(p); }
681 void ExportAlloc::operator delete[](void* p) { free(p); }
682
683
684 // Export deleted member functions.
685 struct ExportDeleted {
686 __declspec(dllexport) ExportDeleted() = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
687 __declspec(dllexport) ~ExportDeleted() = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
688 __declspec(dllexport) ExportDeleted(const ExportDeleted&) = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
689 __declspec(dllexport) ExportDeleted& operator=(const ExportDeleted&) = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
690 __declspec(dllexport) ExportDeleted(ExportDeleted&&) = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
691 __declspec(dllexport) ExportDeleted& operator=(ExportDeleted&&) = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
692 __declspec(dllexport) void deleted() = delete; // expected-error{{attribute 'dllexport' cannot be applied to a deleted function}}
693 };
694
695
696 // Export defaulted member functions.
697 struct ExportDefaulted {
698 __declspec(dllexport) ExportDefaulted() = default;
699 __declspec(dllexport) ~ExportDefaulted() = default;
700 __declspec(dllexport) ExportDefaulted(const ExportDefaulted&) = default;
701 __declspec(dllexport) ExportDefaulted& operator=(const ExportDefaulted&) = default;
702 __declspec(dllexport) ExportDefaulted(ExportDefaulted&&) = default;
703 __declspec(dllexport) ExportDefaulted& operator=(ExportDefaulted&&) = default;
704 };
705
706
707 // Export defaulted member function definitions.
708 struct ExportDefaultedDefs {
709 __declspec(dllexport) ExportDefaultedDefs();
710 __declspec(dllexport) ~ExportDefaultedDefs();
711
712 __declspec(dllexport) inline ExportDefaultedDefs(const ExportDefaultedDefs&);
713 __declspec(dllexport) ExportDefaultedDefs& operator=(const ExportDefaultedDefs&);
714
715 __declspec(dllexport) ExportDefaultedDefs(ExportDefaultedDefs&&);
716 __declspec(dllexport) ExportDefaultedDefs& operator=(ExportDefaultedDefs&&);
717 };
718
719 // Export definitions.
720 __declspec(dllexport) ExportDefaultedDefs::ExportDefaultedDefs() = default;
721 ExportDefaultedDefs::~ExportDefaultedDefs() = default;
722
723 // Export inline declaration and definition.
724 __declspec(dllexport) ExportDefaultedDefs::ExportDefaultedDefs(const ExportDefaultedDefs&) = default;
725 inline ExportDefaultedDefs& ExportDefaultedDefs::operator=(const ExportDefaultedDefs&) = default;
726
727 __declspec(dllexport) ExportDefaultedDefs::ExportDefaultedDefs(ExportDefaultedDefs&&) = default;
728 ExportDefaultedDefs& ExportDefaultedDefs::operator=(ExportDefaultedDefs&&) = default;
729
730
731 // Redeclarations cannot add dllexport.
732 struct MemberRedecl {
733 void normalDef(); // expected-note{{previous declaration is here}}
734 void normalInlineDef(); // expected-note{{previous declaration is here}}
735 inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
736 virtual void virtualDef(); // expected-note{{previous declaration is here}}
737 virtual void virtualInlineDef(); // expected-note{{previous declaration is here}}
738 virtual inline void virtualInlineDecl(); // expected-note{{previous declaration is here}}
739 static void staticDef(); // expected-note{{previous declaration is here}}
740 static void staticInlineDef(); // expected-note{{previous declaration is here}}
741 static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
742
743 static int StaticField; // expected-note{{previous declaration is here}}
744 static const int StaticConstField; // expected-note{{previous declaration is here}}
745 constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(declaration|definition)}} is here}}
746 };
747
748 __declspec(dllexport) void MemberRedecl::normalDef() {} // expected-error{{redeclaration of 'MemberRedecl::normalDef' cannot add 'dllexport' attribute}}
749 __declspec(dllexport) inline void MemberRedecl::normalInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::normalInlineDef' cannot add 'dllexport' attribute}}
750 __declspec(dllexport) void MemberRedecl::normalInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::normalInlineDecl' cannot add 'dllexport' attribute}}
751 __declspec(dllexport) void MemberRedecl::virtualDef() {} // expected-error{{redeclaration of 'MemberRedecl::virtualDef' cannot add 'dllexport' attribute}}
752 __declspec(dllexport) inline void MemberRedecl::virtualInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::virtualInlineDef' cannot add 'dllexport' attribute}}
753 __declspec(dllexport) void MemberRedecl::virtualInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::virtualInlineDecl' cannot add 'dllexport' attribute}}
754 __declspec(dllexport) void MemberRedecl::staticDef() {} // expected-error{{redeclaration of 'MemberRedecl::staticDef' cannot add 'dllexport' attribute}}
755 __declspec(dllexport) inline void MemberRedecl::staticInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::staticInlineDef' cannot add 'dllexport' attribute}}
756 __declspec(dllexport) void MemberRedecl::staticInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::staticInlineDecl' cannot add 'dllexport' attribute}}
757
758 __declspec(dllexport) int MemberRedecl::StaticField = 1; // expected-error{{redeclaration of 'MemberRedecl::StaticField' cannot add 'dllexport' attribute}}
759 __declspec(dllexport) const int MemberRedecl::StaticConstField = 1; // expected-error{{redeclaration of 'MemberRedecl::StaticConstField' cannot add 'dllexport' attribute}}
760 #ifdef MS
761 // expected-warning@+4{{attribute declaration must precede definition}}
762 #else
763 // expected-error@+2{{redeclaration of 'MemberRedecl::ConstexprField' cannot add 'dllexport' attribute}}
764 #endif
765 __declspec(dllexport) constexpr int MemberRedecl::ConstexprField;
766
767 #ifdef MS
768 struct __declspec(dllexport) ClassWithMultipleDefaultCtors {
769 ClassWithMultipleDefaultCtors(int = 40) {} // expected-error{{'__declspec(dllexport)' cannot be applied to more than one default constructor}}
770 ClassWithMultipleDefaultCtors(int = 30, ...) {} // expected-note{{declared here}}
771 };
772 template <typename T>
773 struct ClassTemplateWithMultipleDefaultCtors {
774 __declspec(dllexport) ClassTemplateWithMultipleDefaultCtors(int = 40) {} // expected-error{{'__declspec(dllexport)' cannot be applied to more than one default constructor}}
775 __declspec(dllexport) ClassTemplateWithMultipleDefaultCtors(int = 30, ...) {} // expected-note{{declared here}}
776 };
777
778 template <typename T> struct HasDefaults {
779 HasDefaults(int x = sizeof(T)) {} // expected-error {{invalid application of 'sizeof'}}
780 };
781 template struct __declspec(dllexport) HasDefaults<char>;
782
783 template struct
784 __declspec(dllexport) // expected-note {{in instantiation of default function argument expression for 'HasDefaults<void>' required here}}
785 HasDefaults<void>; // expected-note {{in instantiation of member function 'HasDefaults<void>::HasDefaults' requested here}}
786
787 template <typename T> struct HasDefaults2 {
788 __declspec(dllexport) // expected-note {{in instantiation of default function argument expression for 'HasDefaults2<void>' required here}}
789 HasDefaults2(int x = sizeof(T)) {} // expected-error {{invalid application of 'sizeof'}}
790 };
791 template struct HasDefaults2<void>; // expected-note {{in instantiation of member function 'HasDefaults2<void>::HasDefaults2' requested here}}
792
793 #endif
794
795 //===----------------------------------------------------------------------===//
796 // Class member templates
797 //===----------------------------------------------------------------------===//
798
799 struct ExportMemberTmpl {
800 template<typename T> __declspec(dllexport) void normalDecl();
801 template<typename T> __declspec(dllexport) void normalDef();
802 template<typename T> __declspec(dllexport) void normalInclass() {}
803 template<typename T> __declspec(dllexport) void normalInlineDef();
804 template<typename T> __declspec(dllexport) inline void normalInlineDecl();
805 template<typename T> __declspec(dllexport) static void staticDecl();
806 template<typename T> __declspec(dllexport) static void staticDef();
807 template<typename T> __declspec(dllexport) static void staticInclass() {}
808 template<typename T> __declspec(dllexport) static void staticInlineDef();
809 template<typename T> __declspec(dllexport) static inline void staticInlineDecl();
810
811 #if __has_feature(cxx_variable_templates)
812 template<typename T> __declspec(dllexport) static int StaticField;
813 template<typename T> __declspec(dllexport) static int StaticFieldDef;
814 template<typename T> __declspec(dllexport) static const int StaticConstField;
815 template<typename T> __declspec(dllexport) static const int StaticConstFieldDef;
816 template<typename T> __declspec(dllexport) static const int StaticConstFieldEqualInit = 1;
817 template<typename T> __declspec(dllexport) static const int StaticConstFieldBraceInit{1};
818 template<typename T> __declspec(dllexport) constexpr static int ConstexprField = 1;
819 template<typename T> __declspec(dllexport) constexpr static int ConstexprFieldDef = 1;
820 #endif // __has_feature(cxx_variable_templates)
821 };
822
823 template<typename T> void ExportMemberTmpl::normalDef() {}
824 template<typename T> inline void ExportMemberTmpl::normalInlineDef() {}
825 template<typename T> void ExportMemberTmpl::normalInlineDecl() {}
826 template<typename T> void ExportMemberTmpl::staticDef() {}
827 template<typename T> inline void ExportMemberTmpl::staticInlineDef() {}
828 template<typename T> void ExportMemberTmpl::staticInlineDecl() {}
829
830 #if __has_feature(cxx_variable_templates)
831 template<typename T> int ExportMemberTmpl::StaticFieldDef;
832 template<typename T> const int ExportMemberTmpl::StaticConstFieldDef = 1;
833 template<typename T> constexpr int ExportMemberTmpl::ConstexprFieldDef;
834 #endif // __has_feature(cxx_variable_templates)
835
836
837 // Redeclarations cannot add dllexport.
838 struct MemTmplRedecl {
839 template<typename T> void normalDef(); // expected-note{{previous declaration is here}}
840 template<typename T> void normalInlineDef(); // expected-note{{previous declaration is here}}
841 template<typename T> inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
842 template<typename T> static void staticDef(); // expected-note{{previous declaration is here}}
843 template<typename T> static void staticInlineDef(); // expected-note{{previous declaration is here}}
844 template<typename T> static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
845
846 #if __has_feature(cxx_variable_templates)
847 template<typename T> static int StaticField; // expected-note{{previous declaration is here}}
848 template<typename T> static const int StaticConstField; // expected-note{{previous declaration is here}}
849 template<typename T> constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(declaration|definition)}} is here}}
850 #endif // __has_feature(cxx_variable_templates)
851 };
852
853 template<typename T> __declspec(dllexport) void MemTmplRedecl::normalDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalDef' cannot add 'dllexport' attribute}}
854 template<typename T> __declspec(dllexport) inline void MemTmplRedecl::normalInlineDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalInlineDef' cannot add 'dllexport' attribute}}
855 template<typename T> __declspec(dllexport) void MemTmplRedecl::normalInlineDecl() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalInlineDecl' cannot add 'dllexport' attribute}}
856 template<typename T> __declspec(dllexport) void MemTmplRedecl::staticDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticDef' cannot add 'dllexport' attribute}}
857 template<typename T> __declspec(dllexport) inline void MemTmplRedecl::staticInlineDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticInlineDef' cannot add 'dllexport' attribute}}
858 template<typename T> __declspec(dllexport) void MemTmplRedecl::staticInlineDecl() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticInlineDecl' cannot add 'dllexport' attribute}}
859
860 #if __has_feature(cxx_variable_templates)
861 template<typename T> __declspec(dllexport) int MemTmplRedecl::StaticField = 1; // expected-error{{redeclaration of 'MemTmplRedecl::StaticField' cannot add 'dllexport' attribute}}
862 template<typename T> __declspec(dllexport) const int MemTmplRedecl::StaticConstField = 1; // expected-error{{redeclaration of 'MemTmplRedecl::StaticConstField' cannot add 'dllexport' attribute}}
863
864 #ifdef MS
865 // expected-warning@+4{{attribute declaration must precede definition}}
866 #else
867 // expected-error@+2{{redeclaration of 'MemTmplRedecl::ConstexprField' cannot add 'dllexport' attribute}}
868 #endif
869 template<typename T> __declspec(dllexport) constexpr int MemTmplRedecl::ConstexprField;
870 #endif // __has_feature(cxx_variable_templates)
871
872
873
874 struct MemFunTmpl {
875 template<typename T> void normalDef() {}
876 template<typename T> __declspec(dllexport) void exportedNormal() {}
877 template<typename T> static void staticDef() {}
878 template<typename T> __declspec(dllexport) static void exportedStatic() {}
879 };
880
881 // Export implicit instantiation of an exported member function template.
882 void useMemFunTmpl() {
883 MemFunTmpl().exportedNormal<ImplicitInst_Exported>();
884 MemFunTmpl().exportedStatic<ImplicitInst_Exported>();
885 }
886
887 // Export explicit instantiation declaration of an exported member function
888 // template.
889 extern template void MemFunTmpl::exportedNormal<ExplicitDecl_Exported>();
890 template void MemFunTmpl::exportedNormal<ExplicitDecl_Exported>();
891
892 extern template void MemFunTmpl::exportedStatic<ExplicitDecl_Exported>();
893 template void MemFunTmpl::exportedStatic<ExplicitDecl_Exported>();
894
895 // Export explicit instantiation definition of an exported member function
896 // template.
897 template void MemFunTmpl::exportedNormal<ExplicitInst_Exported>();
898 template void MemFunTmpl::exportedStatic<ExplicitInst_Exported>();
899
900 // Export specialization of an exported member function template.
901 template<> __declspec(dllexport) void MemFunTmpl::exportedNormal<ExplicitSpec_Exported>();
902 template<> __declspec(dllexport) void MemFunTmpl::exportedNormal<ExplicitSpec_Def_Exported>() {}
903 template<> __declspec(dllexport) inline void MemFunTmpl::exportedNormal<ExplicitSpec_InlineDef_Exported>() {}
904
905 template<> __declspec(dllexport) void MemFunTmpl::exportedStatic<ExplicitSpec_Exported>();
906 template<> __declspec(dllexport) void MemFunTmpl::exportedStatic<ExplicitSpec_Def_Exported>() {}
907 template<> __declspec(dllexport) inline void MemFunTmpl::exportedStatic<ExplicitSpec_InlineDef_Exported>() {}
908
909 // Not exporting specialization of an exported member function template without
910 // explicit dllexport.
911 template<> void MemFunTmpl::exportedNormal<ExplicitSpec_NotExported>() {}
912 template<> void MemFunTmpl::exportedStatic<ExplicitSpec_NotExported>() {}
913
914
915 // Export explicit instantiation declaration of a non-exported member function
916 // template.
917 extern template __declspec(dllexport) void MemFunTmpl::normalDef<ExplicitDecl_Exported>();
918 template __declspec(dllexport) void MemFunTmpl::normalDef<ExplicitDecl_Exported>();
919
920 extern template __declspec(dllexport) void MemFunTmpl::staticDef<ExplicitDecl_Exported>();
921 template __declspec(dllexport) void MemFunTmpl::staticDef<ExplicitDecl_Exported>();
922
923 // Export explicit instantiation definition of a non-exported member function
924 // template.
925 template __declspec(dllexport) void MemFunTmpl::normalDef<ExplicitInst_Exported>();
926 template __declspec(dllexport) void MemFunTmpl::staticDef<ExplicitInst_Exported>();
927
928 // Export specialization of a non-exported member function template.
929 template<> __declspec(dllexport) void MemFunTmpl::normalDef<ExplicitSpec_Exported>();
930 template<> __declspec(dllexport) void MemFunTmpl::normalDef<ExplicitSpec_Def_Exported>() {}
931 template<> __declspec(dllexport) inline void MemFunTmpl::normalDef<ExplicitSpec_InlineDef_Exported>() {}
932
933 template<> __declspec(dllexport) void MemFunTmpl::staticDef<ExplicitSpec_Exported>();
934 template<> __declspec(dllexport) void MemFunTmpl::staticDef<ExplicitSpec_Def_Exported>() {}
935 template<> __declspec(dllexport) inline void MemFunTmpl::staticDef<ExplicitSpec_InlineDef_Exported>() {}
936
937
938
939 #if __has_feature(cxx_variable_templates)
940 struct MemVarTmpl {
941 template<typename T> static const int StaticVar = 1;
942 template<typename T> __declspec(dllexport) static const int ExportedStaticVar = 1;
943 };
944 template<typename T> const int MemVarTmpl::StaticVar;
945 template<typename T> const int MemVarTmpl::ExportedStaticVar;
946
947 // Export implicit instantiation of an exported member variable template.
948 int useMemVarTmpl() { return MemVarTmpl::ExportedStaticVar<ImplicitInst_Exported>; }
949
950 // Export explicit instantiation declaration of an exported member variable
951 // template.
952 extern template const int MemVarTmpl::ExportedStaticVar<ExplicitDecl_Exported>;
953 template const int MemVarTmpl::ExportedStaticVar<ExplicitDecl_Exported>;
954
955 // Export explicit instantiation definition of an exported member variable
956 // template.
957 template const int MemVarTmpl::ExportedStaticVar<ExplicitInst_Exported>;
958
959 // Export specialization of an exported member variable template.
960 template<> __declspec(dllexport) const int MemVarTmpl::ExportedStaticVar<ExplicitSpec_Exported>;
961 template<> __declspec(dllexport) const int MemVarTmpl::ExportedStaticVar<ExplicitSpec_Def_Exported> = 1;
962
963 // Not exporting specialization of an exported member variable template without
964 // explicit dllexport.
965 template<> const int MemVarTmpl::ExportedStaticVar<ExplicitSpec_NotExported>;
966
967
968 // Export explicit instantiation declaration of a non-exported member variable
969 // template.
970 extern template __declspec(dllexport) const int MemVarTmpl::StaticVar<ExplicitDecl_Exported>;
971 template __declspec(dllexport) const int MemVarTmpl::StaticVar<ExplicitDecl_Exported>;
972
973 // Export explicit instantiation definition of a non-exported member variable
974 // template.
975 template __declspec(dllexport) const int MemVarTmpl::StaticVar<ExplicitInst_Exported>;
976
977 // Export specialization of a non-exported member variable template.
978 template<> __declspec(dllexport) const int MemVarTmpl::StaticVar<ExplicitSpec_Exported>;
979 template<> __declspec(dllexport) const int MemVarTmpl::StaticVar<ExplicitSpec_Def_Exported> = 1;
980
981 #endif // __has_feature(cxx_variable_templates)
982
983
984
985 //===----------------------------------------------------------------------===//
986 // Class template members
987 //===----------------------------------------------------------------------===//
988
989 // Export individual members of a class template.
990 template<typename T>
991 struct ExportClassTmplMembers {
992 __declspec(dllexport) void normalDecl();
993 __declspec(dllexport) void normalDef();
994 __declspec(dllexport) void normalInclass() {}
995 __declspec(dllexport) void normalInlineDef();
996 __declspec(dllexport) inline void normalInlineDecl();
997 __declspec(dllexport) virtual void virtualDecl();
998 __declspec(dllexport) virtual void virtualDef();
999 __declspec(dllexport) virtual void virtualInclass() {}
1000 __declspec(dllexport) virtual void virtualInlineDef();
1001 __declspec(dllexport) virtual inline void virtualInlineDecl();
1002 __declspec(dllexport) static void staticDecl();
1003 __declspec(dllexport) static void staticDef();
1004 __declspec(dllexport) static void staticInclass() {}
1005 __declspec(dllexport) static void staticInlineDef();
1006 __declspec(dllexport) static inline void staticInlineDecl();
1007
1008 protected:
1009 __declspec(dllexport) void protectedDef();
1010 private:
1011 __declspec(dllexport) void privateDef();
1012 public:
1013
1014 __declspec(dllexport) int Field; // expected-warning{{'dllexport' attribute only applies to}}
1015 __declspec(dllexport) static int StaticField;
1016 __declspec(dllexport) static int StaticFieldDef;
1017 __declspec(dllexport) static const int StaticConstField;
1018 __declspec(dllexport) static const int StaticConstFieldDef;
1019 __declspec(dllexport) static const int StaticConstFieldEqualInit = 1;
1020 __declspec(dllexport) static const int StaticConstFieldBraceInit{1};
1021 __declspec(dllexport) constexpr static int ConstexprField = 1;
1022 __declspec(dllexport) constexpr static int ConstexprFieldDef = 1;
1023 };
1024
1025 template<typename T> void ExportClassTmplMembers<T>::normalDef() {}
1026 template<typename T> inline void ExportClassTmplMembers<T>::normalInlineDef() {}
1027 template<typename T> void ExportClassTmplMembers<T>::normalInlineDecl() {}
1028 template<typename T> void ExportClassTmplMembers<T>::virtualDef() {}
1029 template<typename T> inline void ExportClassTmplMembers<T>::virtualInlineDef() {}
1030 template<typename T> void ExportClassTmplMembers<T>::virtualInlineDecl() {}
1031 template<typename T> void ExportClassTmplMembers<T>::staticDef() {}
1032 template<typename T> inline void ExportClassTmplMembers<T>::staticInlineDef() {}
1033 template<typename T> void ExportClassTmplMembers<T>::staticInlineDecl() {}
1034 template<typename T> void ExportClassTmplMembers<T>::protectedDef() {}
1035 template<typename T> void ExportClassTmplMembers<T>::privateDef() {}
1036
1037 template<typename T> int ExportClassTmplMembers<T>::StaticFieldDef;
1038 template<typename T> const int ExportClassTmplMembers<T>::StaticConstFieldDef = 1;
1039 template<typename T> constexpr int ExportClassTmplMembers<T>::ConstexprFieldDef;
1040
1041 template struct ExportClassTmplMembers<ImplicitInst_Exported>;
1042
1043
1044 // Redeclarations cannot add dllexport.
1045 template<typename T>
1046 struct CTMR /*ClassTmplMemberRedecl*/ {
1047 void normalDef(); // expected-note{{previous declaration is here}}
1048 void normalInlineDef(); // expected-note{{previous declaration is here}}
1049 inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
1050 virtual void virtualDef(); // expected-note{{previous declaration is here}}
1051 virtual void virtualInlineDef(); // expected-note{{previous declaration is here}}
1052 virtual inline void virtualInlineDecl(); // expected-note{{previous declaration is here}}
1053 static void staticDef(); // expected-note{{previous declaration is here}}
1054 static void staticInlineDef(); // expected-note{{previous declaration is here}}
1055 static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
1056
1057 static int StaticField; // expected-note{{previous declaration is here}}
1058 static const int StaticConstField; // expected-note{{previous declaration is here}}
1059 constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(definition|declaration)}} is here}}
1060 };
1061
1062 template<typename T> __declspec(dllexport) void CTMR<T>::normalDef() {} // expected-error{{redeclaration of 'CTMR::normalDef' cannot add 'dllexport' attribute}}
1063 template<typename T> __declspec(dllexport) inline void CTMR<T>::normalInlineDef() {} // expected-error{{redeclaration of 'CTMR::normalInlineDef' cannot add 'dllexport' attribute}}
1064 template<typename T> __declspec(dllexport) void CTMR<T>::normalInlineDecl() {} // expected-error{{redeclaration of 'CTMR::normalInlineDecl' cannot add 'dllexport' attribute}}
1065 template<typename T> __declspec(dllexport) void CTMR<T>::virtualDef() {} // expected-error{{redeclaration of 'CTMR::virtualDef' cannot add 'dllexport' attribute}}
1066 template<typename T> __declspec(dllexport) inline void CTMR<T>::virtualInlineDef() {} // expected-error{{redeclaration of 'CTMR::virtualInlineDef' cannot add 'dllexport' attribute}}
1067 template<typename T> __declspec(dllexport) void CTMR<T>::virtualInlineDecl() {} // expected-error{{redeclaration of 'CTMR::virtualInlineDecl' cannot add 'dllexport' attribute}}
1068 template<typename T> __declspec(dllexport) void CTMR<T>::staticDef() {} // expected-error{{redeclaration of 'CTMR::staticDef' cannot add 'dllexport' attribute}}
1069 template<typename T> __declspec(dllexport) inline void CTMR<T>::staticInlineDef() {} // expected-error{{redeclaration of 'CTMR::staticInlineDef' cannot add 'dllexport' attribute}}
1070 template<typename T> __declspec(dllexport) void CTMR<T>::staticInlineDecl() {} // expected-error{{redeclaration of 'CTMR::staticInlineDecl' cannot add 'dllexport' attribute}}
1071
1072 template<typename T> __declspec(dllexport) int CTMR<T>::StaticField = 1; // expected-error{{redeclaration of 'CTMR::StaticField' cannot add 'dllexport' attribute}}
1073 template<typename T> __declspec(dllexport) const int CTMR<T>::StaticConstField = 1; // expected-error{{redeclaration of 'CTMR::StaticConstField' cannot add 'dllexport' attribute}}
1074 #ifdef MS
1075 // expected-warning@+4{{attribute declaration must precede definition}}
1076 #else
1077 // expected-error@+2{{redeclaration of 'CTMR::ConstexprField' cannot add 'dllexport' attribute}}
1078 #endif
1079 template<typename T> __declspec(dllexport) constexpr int CTMR<T>::ConstexprField;
1080
1081
1082
1083 //===----------------------------------------------------------------------===//
1084 // Class template member templates
1085 //===----------------------------------------------------------------------===//
1086
1087 template<typename T>
1088 struct ExportClsTmplMemTmpl {
1089 template<typename U> __declspec(dllexport) void normalDecl();
1090 template<typename U> __declspec(dllexport) void normalDef();
1091 template<typename U> __declspec(dllexport) void normalInclass() {}
1092 template<typename U> __declspec(dllexport) void normalInlineDef();
1093 template<typename U> __declspec(dllexport) inline void normalInlineDecl();
1094 template<typename U> __declspec(dllexport) static void staticDecl();
1095 template<typename U> __declspec(dllexport) static void staticDef();
1096 template<typename U> __declspec(dllexport) static void staticInclass() {}
1097 template<typename U> __declspec(dllexport) static void staticInlineDef();
1098 template<typename U> __declspec(dllexport) static inline void staticInlineDecl();
1099
1100 #if __has_feature(cxx_variable_templates)
1101 template<typename U> __declspec(dllexport) static int StaticField;
1102 template<typename U> __declspec(dllexport) static int StaticFieldDef;
1103 template<typename U> __declspec(dllexport) static const int StaticConstField;
1104 template<typename U> __declspec(dllexport) static const int StaticConstFieldDef;
1105 template<typename U> __declspec(dllexport) static const int StaticConstFieldEqualInit = 1;
1106 template<typename U> __declspec(dllexport) static const int StaticConstFieldBraceInit{1};
1107 template<typename U> __declspec(dllexport) constexpr static int ConstexprField = 1;
1108 template<typename U> __declspec(dllexport) constexpr static int ConstexprFieldDef = 1;
1109 #endif // __has_feature(cxx_variable_templates)
1110 };
1111
1112 template<typename T> template<typename U> void ExportClsTmplMemTmpl<T>::normalDef() {}
1113 template<typename T> template<typename U> inline void ExportClsTmplMemTmpl<T>::normalInlineDef() {}
1114 template<typename T> template<typename U> void ExportClsTmplMemTmpl<T>::normalInlineDecl() {}
1115 template<typename T> template<typename U> void ExportClsTmplMemTmpl<T>::staticDef() {}
1116 template<typename T> template<typename U> inline void ExportClsTmplMemTmpl<T>::staticInlineDef() {}
1117 template<typename T> template<typename U> void ExportClsTmplMemTmpl<T>::staticInlineDecl() {}
1118
1119 #if __has_feature(cxx_variable_templates)
1120 template<typename T> template<typename U> int ExportClsTmplMemTmpl<T>::StaticFieldDef;
1121 template<typename T> template<typename U> const int ExportClsTmplMemTmpl<T>::StaticConstFieldDef = 1;
1122 template<typename T> template<typename U> constexpr int ExportClsTmplMemTmpl<T>::ConstexprFieldDef;
1123 #endif // __has_feature(cxx_variable_templates)
1124
1125
1126 // Redeclarations cannot add dllexport.
1127 template<typename T>
1128 struct CTMTR /*ClassTmplMemberTmplRedecl*/ {
1129 template<typename U> void normalDef(); // expected-note{{previous declaration is here}}
1130 template<typename U> void normalInlineDef(); // expected-note{{previous declaration is here}}
1131 template<typename U> inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
1132 template<typename U> static void staticDef(); // expected-note{{previous declaration is here}}
1133 template<typename U> static void staticInlineDef(); // expected-note{{previous declaration is here}}
1134 template<typename U> static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
1135
1136 #if __has_feature(cxx_variable_templates)
1137 template<typename U> static int StaticField; // expected-note{{previous declaration is here}}
1138 template<typename U> static const int StaticConstField; // expected-note{{previous declaration is here}}
1139 template<typename U> constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(declaration|definition)}} is here}}
1140 #endif // __has_feature(cxx_variable_templates)
1141 };
1142
1143 template<typename T> template<typename U> __declspec(dllexport) void CTMTR<T>::normalDef() {} // expected-error{{redeclaration of 'CTMTR::normalDef' cannot add 'dllexport' attribute}}
1144 template<typename T> template<typename U> __declspec(dllexport) inline void CTMTR<T>::normalInlineDef() {} // expected-error{{redeclaration of 'CTMTR::normalInlineDef' cannot add 'dllexport' attribute}}
1145 template<typename T> template<typename U> __declspec(dllexport) void CTMTR<T>::normalInlineDecl() {} // expected-error{{redeclaration of 'CTMTR::normalInlineDecl' cannot add 'dllexport' attribute}}
1146 template<typename T> template<typename U> __declspec(dllexport) void CTMTR<T>::staticDef() {} // expected-error{{redeclaration of 'CTMTR::staticDef' cannot add 'dllexport' attribute}}
1147 template<typename T> template<typename U> __declspec(dllexport) inline void CTMTR<T>::staticInlineDef() {} // expected-error{{redeclaration of 'CTMTR::staticInlineDef' cannot add 'dllexport' attribute}}
1148 template<typename T> template<typename U> __declspec(dllexport) void CTMTR<T>::staticInlineDecl() {} // expected-error{{redeclaration of 'CTMTR::staticInlineDecl' cannot add 'dllexport' attribute}}
1149
1150 #if __has_feature(cxx_variable_templates)
1151 template<typename T> template<typename U> __declspec(dllexport) int CTMTR<T>::StaticField = 1; // expected-error{{redeclaration of 'CTMTR::StaticField' cannot add 'dllexport' attribute}}
1152 template<typename T> template<typename U> __declspec(dllexport) const int CTMTR<T>::StaticConstField = 1; // expected-error{{redeclaration of 'CTMTR::StaticConstField' cannot add 'dllexport' attribute}}
1153 #ifdef MS
1154 // expected-warning@+4{{attribute declaration must precede definition}}
1155 #else
1156 // expected-error@+2{{redeclaration of 'CTMTR::ConstexprField' cannot add 'dllexport' attribute}}
1157 #endif
1158 template<typename T> template<typename U> __declspec(dllexport) constexpr int CTMTR<T>::ConstexprField;
1159 #endif // __has_feature(cxx_variable_templates)
1160
1161 // FIXME: Precedence rules seem to be different for classes.
1162
1163 //===----------------------------------------------------------------------===//
1164 // Lambdas
1165 //===----------------------------------------------------------------------===//
1166 // The MS ABI doesn't provide a stable mangling for lambdas, so they can't be imported or exported.
1167 #ifdef MS
1168 // expected-error@+2{{lambda cannot be declared 'dllexport'}}
1169 #endif
1170 auto Lambda = []() __declspec(dllexport) -> bool { return true; };
1171