llvm-project/clang/test/SemaCXX/dllexport.cpp

190 lines
8.8 KiB
C++

// RUN: %clang_cc1 -triple i686-win32 -fsyntax-only -verify -std=c++11 %s
// RUN: %clang_cc1 -triple x86_64-win32 -fsyntax-only -verify -std=c++1y %s
// RUN: %clang_cc1 -triple i686-mingw32 -fsyntax-only -verify -std=c++1y %s
// RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -verify -std=c++11 %s
// Helper structs to make templates more expressive.
struct ImplicitInst_Exported {};
struct ExplicitDecl_Exported {};
struct ExplicitInst_Exported {};
struct ExplicitSpec_Exported {};
struct ExplicitSpec_Def_Exported {};
struct ExplicitSpec_InlineDef_Exported {};
struct ExplicitSpec_NotExported {};
// Invalid usage.
__declspec(dllexport) typedef int typedef1; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
typedef __declspec(dllexport) int typedef2; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
typedef int __declspec(dllexport) typedef3; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
typedef __declspec(dllexport) void (*FunTy)(); // expected-warning{{'dllexport' attribute only applies to variables and functions}}
enum __declspec(dllexport) Enum {}; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
#if __has_feature(cxx_strong_enums)
enum class __declspec(dllexport) EnumClass {}; // expected-warning{{'dllexport' attribute only applies to variables and functions}}
#endif
//===----------------------------------------------------------------------===//
// Globals
//===----------------------------------------------------------------------===//
// Export declaration.
__declspec(dllexport) extern int ExternGlobalDecl;
// dllexport implies a definition.
__declspec(dllexport) int GlobalDef;
// Export definition.
__declspec(dllexport) int GlobalInit1 = 1;
int __declspec(dllexport) GlobalInit2 = 1;
// Declare, then export definition.
__declspec(dllexport) extern int GlobalDeclInit;
int GlobalDeclInit = 1;
// Export in local scope.
void functionScope() {
__declspec(dllexport) extern int ExternLocalVarDecl;
}
//===----------------------------------------------------------------------===//
// Functions
//===----------------------------------------------------------------------===//
// Export function declaration. Check different placements.
__attribute__((dllexport)) void decl1A(); // Sanity check with __attribute__
__declspec(dllexport) void decl1B();
void __attribute__((dllexport)) decl2A();
void __declspec(dllexport) decl2B();
// Export function definition.
__declspec(dllexport) void def() {}
// extern "C"
extern "C" __declspec(dllexport) void externC() {}
// Export inline function.
__declspec(dllexport) inline void inlineFunc1() {} // expected-warning{{'dllexport' attribute ignored}}
inline void __attribute__((dllexport)) inlineFunc2() {} // expected-warning{{'dllexport' attribute ignored}}
__declspec(dllexport) inline void inlineDecl(); // expected-warning{{'dllexport' attribute ignored}}
void inlineDecl() {}
__declspec(dllexport) void inlineDef();
inline void inlineDef() {}
// Redeclarations
__declspec(dllexport) void redecl1();
__declspec(dllexport) void redecl1() {}
__declspec(dllexport) void redecl2();
void redecl2() {}
//===----------------------------------------------------------------------===//
// Function templates
//===----------------------------------------------------------------------===//
// Export function template declaration. Check different placements.
template<typename T> __declspec(dllexport) void funcTmplDecl1();
template<typename T> void __declspec(dllexport) funcTmplDecl2();
// Export function template definition.
template<typename T> __declspec(dllexport) void funcTmplDef() {}
// Redeclarations
template<typename T> __declspec(dllexport) void funcTmplRedecl1();
template<typename T> __declspec(dllexport) void funcTmplRedecl1() {}
template<typename T> __declspec(dllexport) void funcTmplRedecl2();
template<typename T> void funcTmplRedecl2() {}
template<typename T> __declspec(dllexport) void funcTmplRedecl3();
template<typename T> void funcTmplRedecl3() {}
template<typename T> void funcTmpl() {}
template<typename T> __declspec(dllexport) void exportedFuncTmplDecl();
template<typename T> __declspec(dllexport) void exportedFuncTmpl() {}
// Export implicit instantiation of an exported function template.
void useFunTmplDecl() { exportedFuncTmplDecl<ImplicitInst_Exported>(); }
void useFunTmplDef() { exportedFuncTmpl<ImplicitInst_Exported>(); }
// Export explicit instantiation declaration of an exported function template.
extern template void exportedFuncTmpl<ExplicitDecl_Exported>();
template void exportedFuncTmpl<ExplicitDecl_Exported>();
// Export explicit instantiation definition of an exported function template.
template void exportedFuncTmpl<ExplicitInst_Exported>();
// Export specialization of an exported function template.
template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Exported>();
template<> __declspec(dllexport) void exportedFuncTmpl<ExplicitSpec_Def_Exported>() {}
template<> __declspec(dllexport) inline void exportedFuncTmpl<ExplicitSpec_InlineDef_Exported>() {} // expected-warning{{'dllexport' attribute ignored}}
// Not exporting specialization of an exported function template without
// explicit dllexport.
template<> void exportedFuncTmpl<ExplicitSpec_NotExported>() {}
// Export explicit instantiation declaration of a non-exported function template.
extern template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
template __declspec(dllexport) void funcTmpl<ExplicitDecl_Exported>();
// Export explicit instantiation definition of a non-exported function template.
template __declspec(dllexport) void funcTmpl<ExplicitInst_Exported>();
// Export specialization of a non-exported function template.
template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Exported>();
template<> __declspec(dllexport) void funcTmpl<ExplicitSpec_Def_Exported>() {}
template<> __declspec(dllexport) inline void funcTmpl<ExplicitSpec_InlineDef_Exported>() {} // expected-warning{{'dllexport' attribute ignored}}
//===----------------------------------------------------------------------===//
// Precedence
//===----------------------------------------------------------------------===//
// dllexport takes precedence over dllimport if both are specified.
__attribute__((dllimport, dllexport)) extern int PrecedenceExternGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllimport) __declspec(dllexport) extern int PrecedenceExternGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
__attribute__((dllexport, dllimport)) extern int PrecedenceExternGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllexport) __declspec(dllimport) extern int PrecedenceExternGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
__attribute__((dllimport, dllexport)) int PrecedenceGlobal1A; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllimport) __declspec(dllexport) int PrecedenceGlobal1B; // expected-warning{{'dllimport' attribute ignored}}
__attribute__((dllexport, dllimport)) int PrecedenceGlobal2A; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllexport) __declspec(dllimport) int PrecedenceGlobal2B; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllexport) extern int PrecedenceExternGlobalRedecl1;
__declspec(dllimport) extern int PrecedenceExternGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllimport) extern int PrecedenceExternGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllexport) extern int PrecedenceExternGlobalRedecl2;
__declspec(dllexport) extern int PrecedenceGlobalRedecl1;
__declspec(dllimport) int PrecedenceGlobalRedecl1; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllimport) extern int PrecedenceGlobalRedecl2; // expected-warning{{'dllimport' attribute ignored}}
__declspec(dllexport) int PrecedenceGlobalRedecl2;
void __attribute__((dllimport, dllexport)) precedence1A() {} // expected-warning{{'dllimport' attribute ignored}}
void __declspec(dllimport) __declspec(dllexport) precedence1B() {} // expected-warning{{'dllimport' attribute ignored}}
void __attribute__((dllexport, dllimport)) precedence2A() {} // expected-warning{{'dllimport' attribute ignored}}
void __declspec(dllexport) __declspec(dllimport) precedence2B() {} // expected-warning{{'dllimport' attribute ignored}}
void __declspec(dllimport) precedenceRedecl1(); // expected-warning{{'dllimport' attribute ignored}}
void __declspec(dllexport) precedenceRedecl1() {}
void __declspec(dllexport) precedenceRedecl2();
void __declspec(dllimport) precedenceRedecl2() {} // expected-warning{{'dllimport' attribute ignored}}