252 lines
13 KiB
C++
252 lines
13 KiB
C++
// RUN: %clang_cc1 -triple i686-win32 -fsyntax-only -verify -std=c++11 %s
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// RUN: %clang_cc1 -triple x86_64-win32 -fsyntax-only -verify -std=c++1y %s
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// RUN: %clang_cc1 -triple i686-mingw32 -fsyntax-only -verify -std=c++1y %s
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// RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -verify -std=c++11 %s
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// Helper structs to make templates more expressive.
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struct ImplicitInst_Exported {};
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struct ExplicitDecl_Exported {};
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struct ExplicitInst_Exported {};
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struct ExplicitSpec_Exported {};
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struct ExplicitSpec_Def_Exported {};
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struct ExplicitSpec_InlineDef_Exported {};
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struct ExplicitSpec_NotExported {};
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namespace { struct Internal {}; }
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struct External { int v; };
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// Invalid usage.
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__declspec(dllexport) typedef int typedef1; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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typedef __declspec(dllexport) int typedef2; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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typedef int __declspec(dllexport) typedef3; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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typedef __declspec(dllexport) void (*FunTy)(); // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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enum __declspec(dllexport) Enum {}; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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#if __has_feature(cxx_strong_enums)
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enum class __declspec(dllexport) EnumClass {}; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
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#endif
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//===----------------------------------------------------------------------===//
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// Globals
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//===----------------------------------------------------------------------===//
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// Export declaration.
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__declspec(dllexport) extern int ExternGlobalDecl;
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// dllexport implies a definition.
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__declspec(dllexport) int GlobalDef;
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// Export definition.
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__declspec(dllexport) int GlobalInit1 = 1;
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int __declspec(dllexport) GlobalInit2 = 1;
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// Declare, then export definition.
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__declspec(dllexport) extern int GlobalDeclInit;
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int GlobalDeclInit = 1;
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// Redeclarations
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__declspec(dllexport) extern int GlobalRedecl1;
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__declspec(dllexport) int GlobalRedecl1;
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__declspec(dllexport) extern int GlobalRedecl2;
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int GlobalRedecl2;
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extern int GlobalRedecl3; // expected-note{{previous declaration is here}}
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__declspec(dllexport) extern int GlobalRedecl3; // expected-error{{redeclaration of 'GlobalRedecl3' cannot add 'dllexport' attribute}}
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// External linkage is required.
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__declspec(dllexport) static int StaticGlobal; // expected-error{{'StaticGlobal' must have external linkage when declared 'dllexport'}}
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__declspec(dllexport) Internal InternalTypeGlobal; // expected-error{{'InternalTypeGlobal' must have external linkage when declared 'dllexport'}}
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namespace { __declspec(dllexport) int InternalGlobal; } // expected-error{{'(anonymous namespace)::InternalGlobal' must have external linkage when declared 'dllexport'}}
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namespace ns { __declspec(dllexport) int ExternalGlobal; }
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__declspec(dllexport) auto InternalAutoTypeGlobal = Internal(); // expected-error{{'InternalAutoTypeGlobal' must have external linkage when declared 'dllexport'}}
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__declspec(dllexport) auto ExternalAutoTypeGlobal = External();
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// Export in local scope.
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void functionScope() {
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__declspec(dllexport) int LocalVarDecl; // expected-error{{'LocalVarDecl' must have external linkage when declared 'dllexport'}}
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__declspec(dllexport) int LocalVarDef = 1; // expected-error{{'LocalVarDef' must have external linkage when declared 'dllexport'}}
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__declspec(dllexport) extern int ExternLocalVarDecl;
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__declspec(dllexport) static int StaticLocalVar; // expected-error{{'StaticLocalVar' must have external linkage when declared 'dllexport'}}
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}
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//===----------------------------------------------------------------------===//
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// Functions
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//===----------------------------------------------------------------------===//
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// Export function declaration. Check different placements.
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__attribute__((dllexport)) void decl1A(); // Sanity check with __attribute__
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__declspec(dllexport) void decl1B();
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void __attribute__((dllexport)) decl2A();
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void __declspec(dllexport) decl2B();
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// Export function definition.
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__declspec(dllexport) void def() {}
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// extern "C"
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extern "C" __declspec(dllexport) void externC() {}
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// Export inline function.
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__declspec(dllexport) inline void inlineFunc1() {}
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inline void __attribute__((dllexport)) inlineFunc2() {}
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__declspec(dllexport) inline void inlineDecl();
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void inlineDecl() {}
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__declspec(dllexport) void inlineDef();
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inline void inlineDef() {}
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// Redeclarations
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__declspec(dllexport) void redecl1();
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__declspec(dllexport) void redecl1() {}
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__declspec(dllexport) void redecl2();
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void redecl2() {}
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void redecl3(); // expected-note{{previous declaration is here}}
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__declspec(dllexport) void redecl3(); // expected-error{{redeclaration of 'redecl3' cannot add 'dllexport' attribute}}
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// Friend functions
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struct FuncFriend {
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friend __declspec(dllexport) void friend1();
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friend __declspec(dllexport) void friend2();
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friend void friend3(); // expected-note{{previous declaration is here}}
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};
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__declspec(dllexport) void friend1() {}
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void friend2() {}
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__declspec(dllexport) void friend3() {} // expected-error{{redeclaration of 'friend3' cannot add 'dllexport' attribute}}
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// Implicit declarations can be redeclared with dllexport.
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__declspec(dllexport) void* operator new(__SIZE_TYPE__ n);
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// External linkage is required.
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__declspec(dllexport) static int staticFunc(); // expected-error{{'staticFunc' must have external linkage when declared 'dllexport'}}
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__declspec(dllexport) Internal internalRetFunc(); // expected-error{{'internalRetFunc' must have external linkage when declared 'dllexport'}}
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namespace { __declspec(dllexport) void internalFunc() {} } // expected-error{{'(anonymous namespace)::internalFunc' must have external linkage when declared 'dllexport'}}
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namespace ns { __declspec(dllexport) void externalFunc() {} }
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//===----------------------------------------------------------------------===//
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// Function templates
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//===----------------------------------------------------------------------===//
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// Export function template declaration. Check different placements.
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template<typename T> __declspec(dllexport) void funcTmplDecl1();
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template<typename T> void __declspec(dllexport) funcTmplDecl2();
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// Export function template definition.
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template<typename T> __declspec(dllexport) void funcTmplDef() {}
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// Redeclarations
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template<typename T> __declspec(dllexport) void funcTmplRedecl1();
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template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
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template<typename T> __declspec(dllexport) void funcTmplRedecl2();
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template<typename T> void funcTmplRedecl2() {}
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template<typename T> void funcTmplRedecl3(); // expected-note{{previous declaration is here}}
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template<typename T> __declspec(dllexport) void funcTmplRedecl3(); // expected-error{{redeclaration of 'funcTmplRedecl3' cannot add 'dllexport' attribute}}
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// Function template friends
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struct FuncTmplFriend {
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template<typename T> friend __declspec(dllexport) void funcTmplFriend1();
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template<typename T> friend __declspec(dllexport) void funcTmplFriend2();
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template<typename T> friend void funcTmplFriend3(); // expected-note{{previous declaration is here}}
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};
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template<typename T> __declspec(dllexport) void funcTmplFriend1() {}
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template<typename T> void funcTmplFriend2() {}
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template<typename T> __declspec(dllexport) void funcTmplFriend3() {} // expected-error{{redeclaration of 'funcTmplFriend3' cannot add 'dllexport' attribute}}
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// External linkage is required.
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template<typename T> __declspec(dllexport) static int staticFuncTmpl(); // expected-error{{'staticFuncTmpl' must have external linkage when declared 'dllexport'}}
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template<typename T> __declspec(dllexport) Internal internalRetFuncTmpl(); // expected-error{{'internalRetFuncTmpl' must have external linkage when declared 'dllexport'}}
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namespace { template<typename T> __declspec(dllexport) void internalFuncTmpl(); } // expected-error{{'(anonymous namespace)::internalFuncTmpl' must have external linkage when declared 'dllexport'}}
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namespace ns { template<typename T> __declspec(dllexport) void externalFuncTmpl(); }
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template<typename T> void funcTmpl() {}
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template<typename T> __declspec(dllexport) void exportedFuncTmplDecl();
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template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
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// Export implicit instantiation of an exported function template.
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void useFunTmplDecl() { exportedFuncTmplDecl<ImplicitInst_Exported>(); }
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void useFunTmplDef() { exportedFuncTmpl<ImplicitInst_Exported>(); }
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// Export explicit instantiation declaration of an exported function template.
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extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
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template void exportedFuncTmpl<ExplicitDecl_Exported>();
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// Export explicit instantiation definition of an exported function template.
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template void exportedFuncTmpl<ExplicitInst_Exported>();
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// Export specialization of an exported function template.
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template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Exported>();
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template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
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template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {}
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// Not exporting specialization of an exported function template without
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// explicit dllexport.
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template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
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// Export explicit instantiation declaration of a non-exported function template.
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extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
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template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
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// Export explicit instantiation definition of a non-exported function template.
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template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
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// Export specialization of a non-exported function template.
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template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Exported>();
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template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
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template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {}
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//===----------------------------------------------------------------------===//
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// Precedence
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//===----------------------------------------------------------------------===//
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// dllexport takes precedence over dllimport if both are specified.
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__attribute__((dllimport, dllexport)) extern int PrecedenceExternGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllimport) __declspec(dllexport) extern int PrecedenceExternGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
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__attribute__((dllexport, dllimport)) extern int PrecedenceExternGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllexport) __declspec(dllimport) extern int PrecedenceExternGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
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__attribute__((dllimport, dllexport)) int PrecedenceGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
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__attribute__((dllexport, dllimport)) int PrecedenceGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllexport) extern int PrecedenceExternGlobalRedecl1;
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__declspec(dllimport) extern int PrecedenceExternGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllimport) extern int PrecedenceExternGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllexport) extern int PrecedenceExternGlobalRedecl2;
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__declspec(dllexport) extern int PrecedenceGlobalRedecl1;
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__declspec(dllimport) int PrecedenceGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllimport) extern int PrecedenceGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
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__declspec(dllexport) int PrecedenceGlobalRedecl2;
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void __attribute__((dllimport, dllexport)) precedence1A() {} // expected-warning{{'dllimport' attribute ignored}}
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void __declspec(dllimport) __declspec(dllexport) precedence1B() {} // expected-warning{{'dllimport' attribute ignored}}
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void __attribute__((dllexport, dllimport)) precedence2A() {} // expected-warning{{'dllimport' attribute ignored}}
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void __declspec(dllexport) __declspec(dllimport) precedence2B() {} // expected-warning{{'dllimport' attribute ignored}}
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void __declspec(dllimport) precedenceRedecl1(); // expected-warning{{'dllimport' attribute ignored}}
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void __declspec(dllexport) precedenceRedecl1() {}
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void __declspec(dllexport) precedenceRedecl2();
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void __declspec(dllimport) precedenceRedecl2() {} // expected-warning{{'dllimport' attribute ignored}}
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