llvm-project/clang/test/SemaCXX/dllimport.cpp
Wolfgang Pieb 477f9cea77 [MSCV][dllexport/dllimport][PS] Allow UniqueExternal linkage classes with dllexport/dllimport
MSVC allows instantiations of exported or imported template classes with template
parameters that have internal linkage. Clang now allows it in Microsoft mode and for
the Playstation platform. This partially addresses issue 56068.

Note that MSVC also allows explicit dllexport/dllimport attributes on classes
with internal linkage (e.g. local classes or classes declared in anonymous name spaces).
Clang continues to reject such declarations.

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D146338
2023-03-29 18:15:04 +00:00

1633 lines
95 KiB
C++

// RUN: %clang_cc1 -triple i686-win32 -fsyntax-only -fms-extensions -verify -std=c++11 -Wunsupported-dll-base-class-template -DMS %s
// RUN: %clang_cc1 -triple x86_64-win32 -fsyntax-only -fms-extensions -verify -std=c++1y -Wunsupported-dll-base-class-template -DMS %s
// RUN: %clang_cc1 -triple i686-mingw32 -fsyntax-only -fms-extensions -verify -std=c++1y -Wunsupported-dll-base-class-template -DGNU %s
// RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -fms-extensions -verify -std=c++11 -Wunsupported-dll-base-class-template -DGNU %s
// RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -fms-extensions -verify -std=c++17 -Wunsupported-dll-base-class-template -DGNU %s
// RUN: %clang_cc1 -triple i686-windows-itanium -fsyntax-only -fms-extensions -verify -std=c++11 -Wunsupported-dll-base-class-template -DWI %s
// RUN: %clang_cc1 -triple x86_64-windows-itanium -fsyntax-only -fms-extensions -verify -std=c++17 -Wunsupported-dll-base-class-template -DWI %s
// RUN: %clang_cc1 -triple x86_64-scei-ps4 -fsyntax-only -fdeclspec -verify -std=c++11 -Wunsupported-dll-base-class-template -DPS %s
// RUN: %clang_cc1 -triple x86_64-scei-ps4 -fsyntax-only -fdeclspec -verify -std=c++17 -Wunsupported-dll-base-class-template -DPS %s
// RUN: %clang_cc1 -triple x86_64-sie-ps5 -fsyntax-only -fdeclspec -verify -std=c++17 -Wunsupported-dll-base-class-template -DPS %s
// Helper structs to make templates more expressive.
struct ImplicitInst_Imported {};
struct ExplicitDecl_Imported {};
struct ExplicitInst_Imported {};
struct ExplicitSpec_Imported {};
struct ExplicitSpec_Def_Imported {};
struct ExplicitSpec_InlineDef_Imported {};
struct ExplicitSpec_NotImported {};
namespace { struct Internal {}; }
// Invalid usage.
__declspec(dllimport) typedef int typedef1;
// expected-warning@-1{{'dllimport' attribute only applies to functions, variables, classes, and Objective-C interfaces}}
typedef __declspec(dllimport) int typedef2;
// expected-warning@-1{{'dllimport' attribute only applies to}}
typedef int __declspec(dllimport) typedef3;
// expected-warning@-1{{'dllimport' attribute only applies to}}
typedef __declspec(dllimport) void (*FunTy)();
// expected-warning@-1{{'dllimport' attribute only applies to}}
enum __declspec(dllimport) Enum {};
// expected-warning@-1{{'dllimport' attribute only applies to}}
#if __has_feature(cxx_strong_enums)
enum class __declspec(dllimport) EnumClass {};
// expected-warning@-1{{'dllimport' attribute only applies to}}
#endif
//===----------------------------------------------------------------------===//
// Globals
//===----------------------------------------------------------------------===//
// Import declaration.
__declspec(dllimport) extern int ExternGlobalDecl;
// dllimport implies a declaration.
__declspec(dllimport) int GlobalDecl;
int **__attribute__((dllimport))* GlobalDeclChunkAttr;
int GlobalDeclAttr __attribute__((dllimport));
// Not allowed on definitions.
__declspec(dllimport) extern int ExternGlobalInit = 1; // expected-error{{definition of dllimport data}}
__declspec(dllimport) int GlobalInit1 = 1; // expected-error{{definition of dllimport data}}
int __declspec(dllimport) GlobalInit2 = 1; // expected-error{{definition of dllimport data}}
// Declare, then reject definition.
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) extern int ExternGlobalDeclInit; // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ExternGlobalDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ExternGlobalDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
int ExternGlobalDeclInit = 1;
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) int GlobalDeclInit; // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'GlobalDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'GlobalDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
int GlobalDeclInit = 1;
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
int *GlobalDeclChunkAttrInit = 0;
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'GlobalDeclAttrInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'GlobalDeclAttrInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
int GlobalDeclAttrInit = 1;
// Redeclarations
__declspec(dllimport) extern int GlobalRedecl1;
__declspec(dllimport) extern int GlobalRedecl1;
__declspec(dllimport) int GlobalRedecl2a;
__declspec(dllimport) int GlobalRedecl2a;
int *__attribute__((dllimport)) GlobalRedecl2b;
int *__attribute__((dllimport)) GlobalRedecl2b;
int GlobalRedecl2c __attribute__((dllimport));
int GlobalRedecl2c __attribute__((dllimport));
__declspec(dllimport) extern int GlobalRedecl3; // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
extern int GlobalRedecl3; // expected-warning{{'GlobalRedecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
extern int GlobalRedecl4; // expected-note{{previous declaration is here}}
__declspec(dllimport) extern int GlobalRedecl4; // expected-warning{{redeclaration of 'GlobalRedecl4' should not add 'dllimport' attribute}}
extern "C" {
extern int GlobalRedecl5; // expected-note{{previous declaration is here}}
__declspec(dllimport) extern int GlobalRedecl5; // expected-warning{{redeclaration of 'GlobalRedecl5' should not add 'dllimport' attribute}}
}
// External linkage is required.
__declspec(dllimport) static int StaticGlobal; // expected-error{{'StaticGlobal' must have external linkage when declared 'dllimport'}}
__declspec(dllimport) Internal InternalTypeGlobal; // expected-error{{'InternalTypeGlobal' must have external linkage when declared 'dllimport'}}
#ifndef MS
namespace { __declspec(dllimport) int InternalGlobal; } // expected-error{{'(anonymous namespace)::InternalGlobal' must have external linkage when declared 'dllimport'}}
#endif
namespace ns { __declspec(dllimport) int ExternalGlobal; }
__declspec(dllimport) auto InternalAutoTypeGlobal = Internal(); // expected-error{{'InternalAutoTypeGlobal' must have external linkage when declared 'dllimport'}}
// expected-error@-1{{definition of dllimport data}}
// Thread local variables are invalid.
__declspec(dllimport) __thread int ThreadLocalGlobal; // expected-error{{'ThreadLocalGlobal' cannot be thread local when declared 'dllimport'}}
// This doesn't work on MinGW, because there, dllimport on the inline function is ignored.
#ifndef GNU
inline void __declspec(dllimport) ImportedInlineWithThreadLocal() {
static __thread int OK; // no-error
}
#endif
// Import in local scope.
__declspec(dllimport) float LocalRedecl1; // expected-note{{previous declaration is here}}
__declspec(dllimport) float LocalRedecl2; // expected-note{{previous declaration is here}}
__declspec(dllimport) float LocalRedecl3; // expected-note{{previous declaration is here}}
void functionScope() {
__declspec(dllimport) int LocalRedecl1; // expected-error{{redeclaration of 'LocalRedecl1' with a different type: 'int' vs 'float'}}
int *__attribute__((dllimport)) LocalRedecl2; // expected-error{{redeclaration of 'LocalRedecl2' with a different type: 'int *' vs 'float'}}
int LocalRedecl3 __attribute__((dllimport)); // expected-error{{redeclaration of 'LocalRedecl3' with a different type: 'int' vs 'float'}}
__declspec(dllimport) int LocalVarDecl;
__declspec(dllimport) int LocalVarDef = 1; // expected-error{{definition of dllimport data}}
__declspec(dllimport) extern int ExternLocalVarDecl;
__declspec(dllimport) extern int ExternLocalVarDef = 1; // expected-error{{definition of dllimport data}}
__declspec(dllimport) static int StaticLocalVar; // expected-error{{'StaticLocalVar' must have external linkage when declared 'dllimport'}}
}
//===----------------------------------------------------------------------===//
// Variable templates
//===----------------------------------------------------------------------===//
#if __has_feature(cxx_variable_templates)
// Import declaration.
template<typename T> __declspec(dllimport) extern int ExternVarTmplDecl;
// dllimport implies a declaration.
template<typename T> __declspec(dllimport) int VarTmplDecl;
// Not allowed on definitions.
template<typename T> __declspec(dllimport) extern int ExternVarTmplInit = 1; // expected-error{{definition of dllimport data}}
template<typename T> __declspec(dllimport) int VarTmplInit1 = 1; // expected-error{{definition of dllimport data}}
template<typename T> int __declspec(dllimport) VarTmplInit2 = 1; // expected-error{{definition of dllimport data}}
// Declare, then reject definition.
#ifdef GNU
// expected-note@+3{{previous attribute is here}}
#endif
template <typename T>
__declspec(dllimport) extern int ExternVarTmplDeclInit; // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'ExternVarTmplDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'ExternVarTmplDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template <typename T>
int ExternVarTmplDeclInit = 1;
#ifdef GNU
// expected-note@+3{{previous attribute is here}}
#endif
template <typename T>
__declspec(dllimport) int VarTmplDeclInit; // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'VarTmplDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'VarTmplDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template <typename T>
int VarTmplDeclInit = 1;
// Redeclarations
template<typename T> __declspec(dllimport) extern int VarTmplRedecl1;
template<typename T> __declspec(dllimport) extern int VarTmplRedecl1;
template<typename T> __declspec(dllimport) int VarTmplRedecl2;
template<typename T> __declspec(dllimport) int VarTmplRedecl2;
template<typename T> __declspec(dllimport) extern int VarTmplRedecl3; // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> extern int VarTmplRedecl3; // expected-warning{{'VarTmplRedecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> extern int VarTmplRedecl4; // expected-note{{previous declaration is here}}
template<typename T> __declspec(dllimport) extern int VarTmplRedecl4; // expected-error{{redeclaration of 'VarTmplRedecl4' cannot add 'dllimport' attribute}}
// External linkage is required.
template<typename T> __declspec(dllimport) static int StaticVarTmpl; // expected-error{{'StaticVarTmpl' must have external linkage when declared 'dllimport'}}
template<typename T> __declspec(dllimport) Internal InternalTypeVarTmpl; // expected-error{{'InternalTypeVarTmpl' must have external linkage when declared 'dllimport'}}
#ifndef MS
namespace { template<typename T> __declspec(dllimport) int InternalVarTmpl; } // expected-error{{'(anonymous namespace)::InternalVarTmpl' must have external linkage when declared 'dllimport'}}
#endif
namespace ns { template<typename T> __declspec(dllimport) int ExternalVarTmpl; }
template<typename T> __declspec(dllimport) auto InternalAutoTypeVarTmpl = Internal(); // expected-error{{definition of dllimport data}} // expected-error{{'InternalAutoTypeVarTmpl' must have external linkage when declared 'dllimport'}}
template<typename T> int VarTmpl;
template<typename T> __declspec(dllimport) int ImportedVarTmpl;
// Import implicit instantiation of an imported variable template.
int useVarTmpl() { return ImportedVarTmpl<ImplicitInst_Imported>; }
// Import explicit instantiation declaration of an imported variable template.
extern template int ImportedVarTmpl<ExplicitDecl_Imported>;
// An explicit instantiation definition of an imported variable template cannot
// be imported because the template must be defined which is illegal.
// Import specialization of an imported variable template.
template<> __declspec(dllimport) int ImportedVarTmpl<ExplicitSpec_Imported>;
template<> __declspec(dllimport) int ImportedVarTmpl<ExplicitSpec_Def_Imported> = 1; // expected-error{{definition of dllimport data}}
// Not importing specialization of an imported variable template without
// explicit dllimport.
template<> int ImportedVarTmpl<ExplicitSpec_NotImported>;
// Import explicit instantiation declaration of a non-imported variable template.
extern template __declspec(dllimport) int VarTmpl<ExplicitDecl_Imported>;
// Import explicit instantiation definition of a non-imported variable template.
template __declspec(dllimport) int VarTmpl<ExplicitInst_Imported>;
// Import specialization of a non-imported variable template.
template<> __declspec(dllimport) int VarTmpl<ExplicitSpec_Imported>;
template<> __declspec(dllimport) int VarTmpl<ExplicitSpec_Def_Imported> = 1; // expected-error{{definition of dllimport data}}
#endif // __has_feature(cxx_variable_templates)
//===----------------------------------------------------------------------===//
// Functions
//===----------------------------------------------------------------------===//
// Import function declaration. Check different placements.
__attribute__((dllimport)) void decl1A(); // Validation check with __attribute__
__declspec(dllimport) void decl1B();
void __attribute__((dllimport)) decl2A();
void __declspec(dllimport) decl2B();
// Not allowed on function definitions.
__declspec(dllimport) void def() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
// extern "C"
extern "C" __declspec(dllimport) void externC();
// Import inline function.
#ifdef GNU
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) inline void inlineFunc1() {}
inline void __attribute__((dllimport)) inlineFunc2() {}
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) inline void inlineDecl();
void inlineDecl() {}
__declspec(dllimport) void inlineDef();
#ifdef GNU
// expected-warning@+2{{'inlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
inline void inlineDef() {}
// Redeclarations
__declspec(dllimport) void redecl1();
__declspec(dllimport) void redecl1();
__declspec(dllimport) void redecl2(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
void redecl2(); // expected-warning{{'redecl2' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) void redecl3(); // expected-note{{previous declaration is here}}
// NB: Both MSVC and Clang issue a warning and make redecl3 dllexport.
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'redecl3' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'redecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void redecl3() {}
void redecl4(); // expected-note{{previous declaration is here}}
__declspec(dllimport) void redecl4(); // expected-warning{{redeclaration of 'redecl4' should not add 'dllimport' attribute}}
extern "C" {
void redecl5(); // expected-note{{previous declaration is here}}
__declspec(dllimport) void redecl5(); // expected-warning{{redeclaration of 'redecl5' should not add 'dllimport' attribute}}
}
#if defined(MS) || defined(WI) || defined(PS)
void redecl6(); // expected-note{{previous declaration is here}}
__declspec(dllimport) inline void redecl6() {} // expected-warning{{redeclaration of 'redecl6' should not add 'dllimport' attribute}}
#else
void redecl6();
__declspec(dllimport) inline void redecl6() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
// Friend functions
struct FuncFriend {
friend __declspec(dllimport) void friend1();
friend __declspec(dllimport) void friend2(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
friend __declspec(dllimport) void friend3(); // expected-note{{previous declaration is here}}
friend void friend4(); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}}
#endif
friend void friend5();
};
__declspec(dllimport) void friend1();
void friend2(); // expected-warning{{'friend2' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'friend3' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'friend3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void friend3() {}
__declspec(dllimport) void friend4(); // expected-warning{{redeclaration of 'friend4' should not add 'dllimport' attribute}}
#if defined(MS) || defined(WI) || defined(PS)
__declspec(dllimport) inline void friend5() {} // expected-warning{{redeclaration of 'friend5' should not add 'dllimport' attribute}}
#else
__declspec(dllimport) inline void friend5() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
void __declspec(dllimport) friend6(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
void __declspec(dllimport) friend7();
struct FuncFriend2 {
friend void friend6(); // expected-warning{{'friend6' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
friend void ::friend7();
};
// Implicit declarations can be redeclared with dllimport.
__declspec(dllimport) void* operator new(__SIZE_TYPE__ n);
// External linkage is required.
__declspec(dllimport) static int staticFunc(); // expected-error{{'staticFunc' must have external linkage when declared 'dllimport'}}
__declspec(dllimport) Internal internalRetFunc(); // expected-error{{'internalRetFunc' must have external linkage when declared 'dllimport'}}
namespace { __declspec(dllimport) void internalFunc(); } // expected-error{{'(anonymous namespace)::internalFunc' must have external linkage when declared 'dllimport'}}
namespace ns { __declspec(dllimport) void externalFunc(); }
// Import deleted functions.
// FIXME: Deleted functions are definitions so a missing inline is diagnosed
// here which is irrelevant. But because the delete keyword is parsed later
// there is currently no straight-forward way to avoid this diagnostic.
__declspec(dllimport) void deletedFunc() = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}} expected-error{{dllimport cannot be applied to non-inline function definition}}
#if defined(MS) || defined(WI) || defined(PS)
__declspec(dllimport) inline void deletedInlineFunc() = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
#else
__declspec(dllimport) inline void deletedInlineFunc() = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
//===----------------------------------------------------------------------===//
// Function templates
//===----------------------------------------------------------------------===//
// Import function template declaration. Check different placements.
template<typename T> __declspec(dllimport) void funcTmplDecl1();
template<typename T> void __declspec(dllimport) funcTmplDecl2();
// Import function template definition.
template<typename T> __declspec(dllimport) void funcTmplDef() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
// Import inline function template.
#ifdef GNU // MinGW always ignores dllimport on inline functions.
template<typename T> __declspec(dllimport) inline void inlineFuncTmpl1() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> inline void __attribute__((dllimport)) inlineFuncTmpl2() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) inline void inlineFuncTmplDecl(); // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> void inlineFuncTmplDecl() {}
template<typename T> __declspec(dllimport) void inlineFuncTmplDef();
template<typename T> inline void inlineFuncTmplDef() {} // expected-warning{{'inlineFuncTmplDef' redeclared inline; 'dllimport' attribute ignored}}
#else // MSVC drops dllimport when the function template is redeclared without it. (It doesn't warn, but we do.)
template<typename T> __declspec(dllimport) inline void inlineFuncTmpl1() {}
template<typename T> inline void __attribute__((dllimport)) inlineFuncTmpl2() {}
template<typename T> __declspec(dllimport) inline void inlineFuncTmplDecl(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> void inlineFuncTmplDecl() {} // expected-warning{{'inlineFuncTmplDecl' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> __declspec(dllimport) void inlineFuncTmplDef(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> inline void inlineFuncTmplDef() {} // expected-warning{{'inlineFuncTmplDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
// Redeclarations
template<typename T> __declspec(dllimport) void funcTmplRedecl1();
template<typename T> __declspec(dllimport) void funcTmplRedecl1();
template<typename T> __declspec(dllimport) void funcTmplRedecl2(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> void funcTmplRedecl2(); // expected-warning{{'funcTmplRedecl2' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> __declspec(dllimport) void funcTmplRedecl3(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> void funcTmplRedecl3() {} // expected-warning{{'funcTmplRedecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> void funcTmplRedecl4(); // expected-note{{previous declaration is here}}
template<typename T> __declspec(dllimport) void funcTmplRedecl4(); // expected-error{{redeclaration of 'funcTmplRedecl4' cannot add 'dllimport' attribute}}
#ifdef MS
template<typename T> void funcTmplRedecl5(); // expected-note{{previous declaration is here}}
template<typename T> __declspec(dllimport) inline void funcTmplRedecl5() {} // expected-error{{redeclaration of 'funcTmplRedecl5' cannot add 'dllimport' attribute}}
#endif
// Function template friends
struct FuncTmplFriend {
template<typename T> friend __declspec(dllimport) void funcTmplFriend1();
template<typename T> friend __declspec(dllimport) void funcTmplFriend2(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> friend __declspec(dllimport) void funcTmplFriend3(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> friend void funcTmplFriend4(); // expected-note{{previous declaration is here}}
#ifdef GNU
// expected-warning@+4{{'dllimport' attribute ignored on inline function}}
#else
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename T> friend __declspec(dllimport) inline void funcTmplFriend5();
};
template<typename T> __declspec(dllimport) void funcTmplFriend1();
template<typename T> void funcTmplFriend2(); // expected-warning{{'funcTmplFriend2' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> void funcTmplFriend3() {} // expected-warning{{'funcTmplFriend3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> __declspec(dllimport) void funcTmplFriend4(); // expected-error{{redeclaration of 'funcTmplFriend4' cannot add 'dllimport' attribute}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+2{{'funcTmplFriend5' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template<typename T> inline void funcTmplFriend5() {}
// External linkage is required.
template<typename T> __declspec(dllimport) static int staticFuncTmpl(); // expected-error{{'staticFuncTmpl' must have external linkage when declared 'dllimport'}}
template<typename T> __declspec(dllimport) Internal internalRetFuncTmpl(); // expected-error{{'internalRetFuncTmpl' must have external linkage when declared 'dllimport'}}
namespace { template<typename T> __declspec(dllimport) void internalFuncTmpl(); } // expected-error{{'(anonymous namespace)::internalFuncTmpl' must have external linkage when declared 'dllimport'}}
namespace ns { template<typename T> __declspec(dllimport) void externalFuncTmpl(); }
template<typename T> void funcTmpl() {}
template<typename T> inline void inlineFuncTmpl() {}
template<typename T> __declspec(dllimport) void importedFuncTmplDecl();
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) inline void importedFuncTmpl() {}
// Import implicit instantiation of an imported function template.
void useFunTmplDecl() { importedFuncTmplDecl<ImplicitInst_Imported>(); }
void useFunTmplDef() { importedFuncTmpl<ImplicitInst_Imported>(); }
// Import explicit instantiation declaration of an imported function template.
extern template void importedFuncTmpl<ExplicitDecl_Imported>();
// Import explicit instantiation definition of an imported function template.
// NB: MSVC fails this instantiation without explicit dllimport which is most
// likely a bug because an implicit instantiation is accepted.
template void importedFuncTmpl<ExplicitInst_Imported>();
// Import specialization of an imported function template. A definition must be
// declared inline.
template<> __declspec(dllimport) void importedFuncTmpl<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void importedFuncTmpl<ExplicitSpec_Def_Imported>() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
#ifdef MS
template<> __declspec(dllimport) inline void importedFuncTmpl<ExplicitSpec_InlineDef_Imported>() {}
#endif
// Not importing specialization of an imported function template without
// explicit dllimport.
template<> void importedFuncTmpl<ExplicitSpec_NotImported>() {}
// Import explicit instantiation declaration of a non-imported function template.
extern template __declspec(dllimport) void funcTmpl<ExplicitDecl_Imported>();
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
extern template __declspec(dllimport) void inlineFuncTmpl<ExplicitDecl_Imported>();
// Import explicit instantiation definition of a non-imported function template.
template __declspec(dllimport) void funcTmpl<ExplicitInst_Imported>();
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template __declspec(dllimport) void inlineFuncTmpl<ExplicitInst_Imported>();
// Import specialization of a non-imported function template. A definition must
// be declared inline.
template<> __declspec(dllimport) void funcTmpl<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void funcTmpl<ExplicitSpec_Def_Imported>() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<> __declspec(dllimport) inline void funcTmpl<ExplicitSpec_InlineDef_Imported>() {}
//===----------------------------------------------------------------------===//
// Class members
//===----------------------------------------------------------------------===//
// Import individual members of a class.
struct ImportMembers {
struct Nested {
__declspec(dllimport) void normalDecl();
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) void normalDef(); // expected-note{{previous declaration is here}}
};
#ifdef GNU
// expected-note@+5{{previous attribute is here}}
// expected-warning@+5{{'dllimport' attribute ignored on inline function}}
// expected-warning@+6{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) void normalDecl();
__declspec(dllimport) void normalDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) void normalInclass() {}
__declspec(dllimport) void normalInlineDef();
__declspec(dllimport) inline void normalInlineDecl();
#ifdef GNU
// expected-note@+5{{previous attribute is here}}
// expected-warning@+5{{'dllimport' attribute ignored on inline function}}
// expected-warning@+6{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) virtual void virtualDecl();
__declspec(dllimport) virtual void virtualDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) virtual void virtualInclass() {}
__declspec(dllimport) virtual void virtualInlineDef();
__declspec(dllimport) virtual inline void virtualInlineDecl();
#ifdef GNU
// expected-note@+5{{previous attribute is here}}
// expected-warning@+5{{'dllimport' attribute ignored on inline function}}
// expected-warning@+6{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) static void staticDecl();
__declspec(dllimport) static void staticDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) static void staticInclass() {}
__declspec(dllimport) static void staticInlineDef();
__declspec(dllimport) static inline void staticInlineDecl();
protected:
__declspec(dllimport) void protectedDecl();
private:
__declspec(dllimport) void privateDecl();
public:
__declspec(dllimport) int Field; // expected-warning{{'dllimport' attribute only applies to}}
__declspec(dllimport) static int StaticField;
__declspec(dllimport) static int StaticFieldDef; // expected-note{{attribute is here}}
__declspec(dllimport) static const int StaticConstField;
__declspec(dllimport) static const int StaticConstFieldDef; // expected-note{{attribute is here}}
__declspec(dllimport) static const int StaticConstFieldEqualInit = 1;
__declspec(dllimport) static const int StaticConstFieldBraceInit{1};
__declspec(dllimport) constexpr static int ConstexprField = 1;
#if __cplusplus < 201703L && !defined(MS)
// expected-note@+2{{attribute is here}}
#endif
__declspec(dllimport) constexpr static int ConstexprFieldDef = 1;
};
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ImportMembers::Nested::normalDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ImportMembers::Nested::normalDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void ImportMembers::Nested::normalDef() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ImportMembers::normalDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ImportMembers::normalDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void ImportMembers::normalDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportMembers::normalInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
inline void ImportMembers::normalInlineDef() {}
void ImportMembers::normalInlineDecl() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ImportMembers::virtualDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ImportMembers::virtualDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void ImportMembers::virtualDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportMembers::virtualInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
inline void ImportMembers::virtualInlineDef() {}
void ImportMembers::virtualInlineDecl() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ImportMembers::staticDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ImportMembers::staticDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
void ImportMembers::staticDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportMembers::staticInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
inline void ImportMembers::staticInlineDef() {}
void ImportMembers::staticInlineDecl() {}
int ImportMembers::StaticFieldDef; // expected-error{{definition of dllimport static field not allowed}}
const int ImportMembers::StaticConstFieldDef = 1; // expected-error{{definition of dllimport static field not allowed}}
#if __cplusplus < 201703L && !defined(MS)
// expected-error@+2{{definition of dllimport static field not allowed}}
#endif
constexpr int ImportMembers::ConstexprFieldDef;
// Import on member definitions.
struct ImportMemberDefs {
__declspec(dllimport) void normalDef();
__declspec(dllimport) void normalInlineDef();
__declspec(dllimport) virtual void virtualDef();
__declspec(dllimport) virtual void virtualInlineDef();
__declspec(dllimport) static void staticDef();
__declspec(dllimport) static void staticInlineDef();
#ifdef MS
__declspec(dllimport) inline void normalInlineDecl();
__declspec(dllimport) virtual inline void virtualInlineDecl();
__declspec(dllimport) static inline void staticInlineDecl();
#endif
__declspec(dllimport) static int StaticField;
__declspec(dllimport) static const int StaticConstField;
__declspec(dllimport) constexpr static int ConstexprField = 1;
};
__declspec(dllimport) void ImportMemberDefs::normalDef() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
__declspec(dllimport) void ImportMemberDefs::virtualDef() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
__declspec(dllimport) void ImportMemberDefs::staticDef() {} // expected-error{{dllimport cannot be applied to non-inline function definition}}
#ifdef MS
__declspec(dllimport) inline void ImportMemberDefs::normalInlineDef() {}
__declspec(dllimport) void ImportMemberDefs::normalInlineDecl() {}
__declspec(dllimport) inline void ImportMemberDefs::virtualInlineDef() {}
__declspec(dllimport) void ImportMemberDefs::virtualInlineDecl() {}
__declspec(dllimport) inline void ImportMemberDefs::staticInlineDef() {}
__declspec(dllimport) void ImportMemberDefs::staticInlineDecl() {}
#endif
__declspec(dllimport) int ImportMemberDefs::StaticField; // expected-error{{definition of dllimport static field not allowed}} expected-note{{attribute is here}}
__declspec(dllimport) const int ImportMemberDefs::StaticConstField = 1; // expected-error{{definition of dllimport static field not allowed}} expected-note{{attribute is here}}
#if __cplusplus < 201703L && !defined(MS)
// expected-error@+3{{definition of dllimport static field not allowed}}
// expected-note@+2{{attribute is here}}
#endif
__declspec(dllimport) constexpr int ImportMemberDefs::ConstexprField;
// Import special member functions.
struct ImportSpecials {
__declspec(dllimport) ImportSpecials();
__declspec(dllimport) ~ImportSpecials();
__declspec(dllimport) ImportSpecials(const ImportSpecials&);
__declspec(dllimport) ImportSpecials& operator=(const ImportSpecials&);
__declspec(dllimport) ImportSpecials(ImportSpecials&&);
__declspec(dllimport) ImportSpecials& operator=(ImportSpecials&&);
};
// Import deleted member functions.
struct ImportDeleted {
#if defined(MS) || defined(WI) || defined(PS)
__declspec(dllimport) ImportDeleted() = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) ~ImportDeleted() = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) ImportDeleted(const ImportDeleted&) = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) ImportDeleted& operator=(const ImportDeleted&) = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) ImportDeleted(ImportDeleted&&) = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) ImportDeleted& operator=(ImportDeleted&&) = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
__declspec(dllimport) void deleted() = delete; // expected-error{{attribute 'dllimport' cannot be applied to a deleted function}}
#else
__declspec(dllimport) ImportDeleted() = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) ~ImportDeleted() = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) ImportDeleted(const ImportDeleted&) = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) ImportDeleted& operator=(const ImportDeleted&) = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) ImportDeleted(ImportDeleted&&) = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) ImportDeleted& operator=(ImportDeleted&&) = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) void deleted() = delete; // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
};
// Import allocation functions.
struct ImportAlloc {
__declspec(dllimport) void* operator new(__SIZE_TYPE__);
__declspec(dllimport) void* operator new[](__SIZE_TYPE__);
__declspec(dllimport) void operator delete(void*);
__declspec(dllimport) void operator delete[](void*);
};
// Import defaulted member functions.
struct ImportDefaulted {
#ifdef GNU
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) ImportDefaulted() = default;
__declspec(dllimport) ~ImportDefaulted() = default;
__declspec(dllimport) ImportDefaulted(const ImportDefaulted&) = default;
__declspec(dllimport) ImportDefaulted& operator=(const ImportDefaulted&) = default;
__declspec(dllimport) ImportDefaulted(ImportDefaulted&&) = default;
__declspec(dllimport) ImportDefaulted& operator=(ImportDefaulted&&) = default;
};
// Import defaulted member function definitions.
struct ImportDefaultedDefs {
__declspec(dllimport) ImportDefaultedDefs();
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) ~ImportDefaultedDefs(); // expected-note{{previous declaration is here}}
#ifdef GNU
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
// expected-note@+2{{previous declaration is here}}
#endif
__declspec(dllimport) inline ImportDefaultedDefs(const ImportDefaultedDefs&);
__declspec(dllimport) ImportDefaultedDefs& operator=(const ImportDefaultedDefs&);
__declspec(dllimport) ImportDefaultedDefs(ImportDefaultedDefs&&);
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) ImportDefaultedDefs &operator=(ImportDefaultedDefs &&); // expected-note{{previous declaration is here}}
};
// Not allowed on definitions.
__declspec(dllimport) ImportDefaultedDefs::ImportDefaultedDefs() = default; // expected-error{{dllimport cannot be applied to non-inline function definition}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'ImportDefaultedDefs::~ImportDefaultedDefs' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'ImportDefaultedDefs::~ImportDefaultedDefs' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
// dllimport cannot be dropped.
ImportDefaultedDefs::~ImportDefaultedDefs() = default;
// Import inline declaration and definition.
#ifdef GNU
// expected-error@+3{{redeclaration of 'ImportDefaultedDefs::ImportDefaultedDefs' cannot add 'dllimport' attribute}}
// expected-warning@+3{{'ImportDefaultedDefs::operator=' redeclared inline; 'dllimport' attribute ignored}}
#endif
__declspec(dllimport) ImportDefaultedDefs::ImportDefaultedDefs(const ImportDefaultedDefs&) = default;
inline ImportDefaultedDefs& ImportDefaultedDefs::operator=(const ImportDefaultedDefs&) = default;
__declspec(dllimport) ImportDefaultedDefs::ImportDefaultedDefs(ImportDefaultedDefs&&) = default; // expected-error{{dllimport cannot be applied to non-inline function definition}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+4{{'ImportDefaultedDefs::operator=' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+2{{'ImportDefaultedDefs::operator=' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
ImportDefaultedDefs &ImportDefaultedDefs::operator=(ImportDefaultedDefs &&) = default;
// Redeclarations cannot add dllimport.
struct MemberRedecl {
void normalDef(); // expected-note{{previous declaration is here}}
inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
virtual void virtualDef(); // expected-note{{previous declaration is here}}
virtual inline void virtualInlineDecl(); // expected-note{{previous declaration is here}}
static void staticDef(); // expected-note{{previous declaration is here}}
static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+4{{previous declaration is here}}
// expected-note@+4{{previous declaration is here}}
// expected-note@+4{{previous declaration is here}}
#endif
void normalInlineDef();
virtual void virtualInlineDef();
static void staticInlineDef();
static int StaticField; // expected-note{{previous declaration is here}}
static const int StaticConstField; // expected-note{{previous declaration is here}}
constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(declaration|definition)}} is here}}
};
__declspec(dllimport) void MemberRedecl::normalDef() {} // expected-error{{redeclaration of 'MemberRedecl::normalDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
__declspec(dllimport) void MemberRedecl::normalInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::normalInlineDecl' cannot add 'dllimport' attribute}}
__declspec(dllimport) void MemberRedecl::virtualDef() {} // expected-error{{redeclaration of 'MemberRedecl::virtualDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
__declspec(dllimport) void MemberRedecl::virtualInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::virtualInlineDecl' cannot add 'dllimport' attribute}}
__declspec(dllimport) void MemberRedecl::staticDef() {} // expected-error{{redeclaration of 'MemberRedecl::staticDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
__declspec(dllimport) void MemberRedecl::staticInlineDecl() {} // expected-error{{redeclaration of 'MemberRedecl::staticInlineDecl' cannot add 'dllimport' attribute}}
#if defined(MS) || defined(WI) || defined(PS)
__declspec(dllimport) inline void MemberRedecl::normalInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::normalInlineDef' cannot add 'dllimport' attribute}}
__declspec(dllimport) inline void MemberRedecl::virtualInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::virtualInlineDef' cannot add 'dllimport' attribute}}
__declspec(dllimport) inline void MemberRedecl::staticInlineDef() {} // expected-error{{redeclaration of 'MemberRedecl::staticInlineDef' cannot add 'dllimport' attribute}}
#else
__declspec(dllimport) inline void MemberRedecl::normalInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) inline void MemberRedecl::virtualInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
__declspec(dllimport) inline void MemberRedecl::staticInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) int MemberRedecl::StaticField = 1; // expected-error{{redeclaration of 'MemberRedecl::StaticField' cannot add 'dllimport' attribute}}
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
__declspec(dllimport) const int MemberRedecl::StaticConstField = 1; // expected-error{{redeclaration of 'MemberRedecl::StaticConstField' cannot add 'dllimport' attribute}}
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
#if __cplusplus < 201703L && !defined(MS)
// expected-error@+6{{redeclaration of 'MemberRedecl::ConstexprField' cannot add 'dllimport' attribute}}
// expected-error@+5{{definition of dllimport static field not allowed}}
// expected-note@+4{{attribute is here}}
#else
// expected-warning@+2{{attribute declaration must precede definition}}
#endif
__declspec(dllimport) constexpr int MemberRedecl::ConstexprField;
//===----------------------------------------------------------------------===//
// Class member templates
//===----------------------------------------------------------------------===//
struct ImportMemberTmpl {
template<typename T> __declspec(dllimport) void normalDecl();
template<typename T> __declspec(dllimport) void normalDef(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename T> __declspec(dllimport) void normalInlineDef();
template<typename T> __declspec(dllimport) static void staticDecl();
template<typename T> __declspec(dllimport) static void staticDef(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename T> __declspec(dllimport) static void staticInlineDef();
#ifdef GNU
template<typename T> __declspec(dllimport) void normalInclass() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) inline void normalInlineDecl(); // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) static void staticInclass() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) static inline void staticInlineDecl(); // expected-warning{{'dllimport' attribute ignored on inline function}}
#else
template<typename T> __declspec(dllimport) void normalInclass() {}
template<typename T> __declspec(dllimport) inline void normalInlineDecl(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
template<typename T> __declspec(dllimport) static void staticInclass() {}
template<typename T> __declspec(dllimport) static inline void staticInlineDecl(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#endif
#if __has_feature(cxx_variable_templates)
template<typename T> __declspec(dllimport) static int StaticField;
template<typename T> __declspec(dllimport) static int StaticFieldDef; // expected-note{{attribute is here}}
template<typename T> __declspec(dllimport) static const int StaticConstField;
template<typename T> __declspec(dllimport) static const int StaticConstFieldDef; // expected-note{{attribute is here}}
template<typename T> __declspec(dllimport) static const int StaticConstFieldEqualInit = 1;
template<typename T> __declspec(dllimport) static const int StaticConstFieldBraceInit{1};
template<typename T> __declspec(dllimport) constexpr static int ConstexprField = 1;
template<typename T> __declspec(dllimport) constexpr static int ConstexprFieldDef = 1;
#endif // __has_feature(cxx_variable_templates)
};
template<typename T> void ImportMemberTmpl::normalDef() {} // expected-warning{{'ImportMemberTmpl::normalDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> void ImportMemberTmpl::staticDef() {} // expected-warning{{'ImportMemberTmpl::staticDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#ifdef GNU // dllimport was ignored above
template<typename T> void ImportMemberTmpl::normalInlineDecl() {}
template<typename T> void ImportMemberTmpl::staticInlineDecl() {}
#else // dllimport dropped here
template<typename T> void ImportMemberTmpl::normalInlineDecl() {} // expected-warning{{'ImportMemberTmpl::normalInlineDecl' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> void ImportMemberTmpl::staticInlineDecl() {} // expected-warning{{'ImportMemberTmpl::staticInlineDecl' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
#ifdef GNU
template<typename T> inline void ImportMemberTmpl::normalInlineDef() {} // expected-warning{{ImportMemberTmpl::normalInlineDef' redeclared inline; 'dllimport' attribute ignored}}
template<typename T> inline void ImportMemberTmpl::staticInlineDef() {} // expected-warning{{ImportMemberTmpl::staticInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#else
template<typename T> inline void ImportMemberTmpl::normalInlineDef() {} // expected-warning{{ImportMemberTmpl::normalInlineDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> inline void ImportMemberTmpl::staticInlineDef() {} // expected-warning{{ImportMemberTmpl::staticInlineDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
#if __has_feature(cxx_variable_templates)
template<typename T> int ImportMemberTmpl::StaticFieldDef; // expected-error{{definition of dllimport static field not allowed}}
template<typename T> const int ImportMemberTmpl::StaticConstFieldDef = 1; // expected-error{{definition of dllimport static field not allowed}}
#ifdef MS
template<typename T> constexpr int ImportMemberTmpl::ConstexprFieldDef;
#endif
#endif // __has_feature(cxx_variable_templates)
// Redeclarations cannot add dllimport.
struct MemTmplRedecl {
template<typename T> void normalDef(); // expected-note{{previous declaration is here}}
template<typename T> inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
template<typename T> static void staticDef(); // expected-note{{previous declaration is here}}
template<typename T> static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+3{{previous declaration is here}}
// expected-note@+3{{previous declaration is here}}
#endif
template<typename T> void normalInlineDef();
template<typename T> static void staticInlineDef();
#if __has_feature(cxx_variable_templates)
template<typename T> static int StaticField; // expected-note{{previous declaration is here}}
template<typename T> static const int StaticConstField; // expected-note{{previous declaration is here}}
#ifdef MS
template<typename T> constexpr static int ConstexprField = 1; // expected-note{{previous definition is here}}
#endif
#endif // __has_feature(cxx_variable_templates)
};
template<typename T> __declspec(dllimport) void MemTmplRedecl::normalDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
#if defined(MS) || defined(WI) || defined(PS)
template<typename T> __declspec(dllimport) inline void MemTmplRedecl::normalInlineDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalInlineDef' cannot add 'dllimport' attribute}}
#else
template<typename T> __declspec(dllimport) inline void MemTmplRedecl::normalInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) void MemTmplRedecl::normalInlineDecl() {} // expected-error{{redeclaration of 'MemTmplRedecl::normalInlineDecl' cannot add 'dllimport' attribute}}
template<typename T> __declspec(dllimport) void MemTmplRedecl::staticDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
#if defined(MS) || defined(WI) || defined(PS)
template<typename T> __declspec(dllimport) inline void MemTmplRedecl::staticInlineDef() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticInlineDef' cannot add 'dllimport' attribute}}
#else
template<typename T> __declspec(dllimport) inline void MemTmplRedecl::staticInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) void MemTmplRedecl::staticInlineDecl() {} // expected-error{{redeclaration of 'MemTmplRedecl::staticInlineDecl' cannot add 'dllimport' attribute}}
#if __has_feature(cxx_variable_templates)
template<typename T> __declspec(dllimport) int MemTmplRedecl::StaticField = 1; // expected-error{{redeclaration of 'MemTmplRedecl::StaticField' cannot add 'dllimport' attribute}}
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
template<typename T> __declspec(dllimport) const int MemTmplRedecl::StaticConstField = 1; // expected-error{{redeclaration of 'MemTmplRedecl::StaticConstField' cannot add 'dllimport' attribute}}
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
#ifdef MS
// expected-warning@+1{{attribute declaration must precede definition}}
template<typename T> __declspec(dllimport) constexpr int MemTmplRedecl::ConstexprField;
#endif
#endif // __has_feature(cxx_variable_templates)
struct MemFunTmpl {
template<typename T> void normalDef() {}
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) void importedNormal() {}
template<typename T> static void staticDef() {}
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) static void importedStatic() {}
};
// Import implicit instantiation of an imported member function template.
void useMemFunTmpl() {
MemFunTmpl().importedNormal<ImplicitInst_Imported>();
MemFunTmpl().importedStatic<ImplicitInst_Imported>();
}
// Import explicit instantiation declaration of an imported member function
// template.
extern template void MemFunTmpl::importedNormal<ExplicitDecl_Imported>();
extern template void MemFunTmpl::importedStatic<ExplicitDecl_Imported>();
// Import explicit instantiation definition of an imported member function
// template.
// NB: MSVC fails this instantiation without explicit dllimport.
template void MemFunTmpl::importedNormal<ExplicitInst_Imported>();
template void MemFunTmpl::importedStatic<ExplicitInst_Imported>();
// Import specialization of an imported member function template.
template<> __declspec(dllimport) void MemFunTmpl::importedNormal<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void MemFunTmpl::importedNormal<ExplicitSpec_Def_Imported>() {} // error on mingw
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<> __declspec(dllimport) inline void MemFunTmpl::importedNormal<ExplicitSpec_InlineDef_Imported>() {}
#if 1
// FIXME: This should not be an error when targeting MSVC. (PR21406)
// expected-error@-7{{dllimport cannot be applied to non-inline function definition}}
#endif
template<> __declspec(dllimport) void MemFunTmpl::importedStatic<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void MemFunTmpl::importedStatic<ExplicitSpec_Def_Imported>() {} // error on mingw
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<> __declspec(dllimport) inline void MemFunTmpl::importedStatic<ExplicitSpec_InlineDef_Imported>() {}
#if 1
// FIXME: This should not be an error when targeting MSVC. (PR21406)
// expected-error@-7{{dllimport cannot be applied to non-inline function definition}}
#endif
// Not importing specialization of an imported member function template without
// explicit dllimport.
template<> void MemFunTmpl::importedNormal<ExplicitSpec_NotImported>() {}
template<> void MemFunTmpl::importedStatic<ExplicitSpec_NotImported>() {}
// Import explicit instantiation declaration of a non-imported member function
// template.
#ifdef GNU
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
#endif
extern template __declspec(dllimport) void MemFunTmpl::normalDef<ExplicitDecl_Imported>();
extern template __declspec(dllimport) void MemFunTmpl::staticDef<ExplicitDecl_Imported>();
// Import explicit instantiation definition of a non-imported member function
// template.
#ifdef GNU
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
// expected-warning@+3{{'dllimport' attribute ignored on inline function}}
#endif
template __declspec(dllimport) void MemFunTmpl::normalDef<ExplicitInst_Imported>();
template __declspec(dllimport) void MemFunTmpl::staticDef<ExplicitInst_Imported>();
// Import specialization of a non-imported member function template.
template<> __declspec(dllimport) void MemFunTmpl::normalDef<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void MemFunTmpl::normalDef<ExplicitSpec_Def_Imported>() {} // error on mingw
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<> __declspec(dllimport) inline void MemFunTmpl::normalDef<ExplicitSpec_InlineDef_Imported>() {}
#if 1
// FIXME: This should not be an error when targeting MSVC. (PR21406)
// expected-error@-7{{dllimport cannot be applied to non-inline function definition}}
#endif
template<> __declspec(dllimport) void MemFunTmpl::staticDef<ExplicitSpec_Imported>();
template<> __declspec(dllimport) void MemFunTmpl::staticDef<ExplicitSpec_Def_Imported>() {} // error on mingw
#ifdef GNU
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
template<> __declspec(dllimport) inline void MemFunTmpl::staticDef<ExplicitSpec_InlineDef_Imported>() {}
#if 1
// FIXME: This should not be an error when targeting MSVC. (PR21406)
// expected-error@-7{{dllimport cannot be applied to non-inline function definition}}
#endif
#if __has_feature(cxx_variable_templates)
struct MemVarTmpl {
template<typename T> static const int StaticVar = 1;
template<typename T> __declspec(dllimport) static const int ImportedStaticVar = 1;
};
// Import implicit instantiation of an imported member variable template.
int useMemVarTmpl() { return MemVarTmpl::ImportedStaticVar<ImplicitInst_Imported>; }
// Import explicit instantiation declaration of an imported member variable
// template.
extern template const int MemVarTmpl::ImportedStaticVar<ExplicitDecl_Imported>;
// An explicit instantiation definition of an imported member variable template
// cannot be imported because the template must be defined which is illegal. The
// in-class initializer does not count.
// Import specialization of an imported member variable template.
template<> __declspec(dllimport) const int MemVarTmpl::ImportedStaticVar<ExplicitSpec_Imported>;
template<> __declspec(dllimport) const int MemVarTmpl::ImportedStaticVar<ExplicitSpec_Def_Imported> = 1;
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
// Not importing specialization of a member variable template without explicit
// dllimport.
template<> const int MemVarTmpl::ImportedStaticVar<ExplicitSpec_NotImported>;
// Import explicit instantiation declaration of a non-imported member variable
// template.
extern template __declspec(dllimport) const int MemVarTmpl::StaticVar<ExplicitDecl_Imported>;
// An explicit instantiation definition of a non-imported member variable template
// cannot be imported because the template must be defined which is illegal. The
// in-class initializer does not count.
// Import specialization of a non-imported member variable template.
template<> __declspec(dllimport) const int MemVarTmpl::StaticVar<ExplicitSpec_Imported>;
template<> __declspec(dllimport) const int MemVarTmpl::StaticVar<ExplicitSpec_Def_Imported> = 1;
// expected-error@-1{{definition of dllimport static field not allowed}}
// expected-note@-2{{attribute is here}}
#endif // __has_feature(cxx_variable_templates)
//===----------------------------------------------------------------------===//
// Class template members
//===----------------------------------------------------------------------===//
// Import individual members of a class template.
template<typename T>
struct ImportClassTmplMembers {
#ifndef GNU
// expected-note@+2{{attribute is here}}
#endif
__declspec(dllimport) void normalDecl();
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) void normalDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) void normalInlineDef();
__declspec(dllimport) virtual void virtualDecl();
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) virtual void virtualDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) virtual void virtualInlineDef();
__declspec(dllimport) static void staticDecl();
#ifdef GNU
// expected-note@+2{{previous attribute is here}}
#endif
__declspec(dllimport) static void staticDef(); // expected-note{{previous declaration is here}}
__declspec(dllimport) static void staticInlineDef();
#ifdef GNU
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
// expected-warning@+7{{'dllimport' attribute ignored on inline function}}
#endif
__declspec(dllimport) void normalInclass() {}
__declspec(dllimport) inline void normalInlineDecl();
__declspec(dllimport) virtual void virtualInclass() {}
__declspec(dllimport) virtual inline void virtualInlineDecl();
__declspec(dllimport) static void staticInclass() {}
__declspec(dllimport) static inline void staticInlineDecl();
protected:
__declspec(dllimport) void protectedDecl();
private:
__declspec(dllimport) void privateDecl();
public:
__declspec(dllimport) int Field; // expected-warning{{'dllimport' attribute only applies to}}
__declspec(dllimport) static int StaticField;
__declspec(dllimport) static int StaticFieldDef; // expected-note{{attribute is here}}
__declspec(dllimport) static const int StaticConstField;
__declspec(dllimport) static const int StaticConstFieldDef; // expected-note{{attribute is here}}
__declspec(dllimport) static const int StaticConstFieldEqualInit = 1;
__declspec(dllimport) static const int StaticConstFieldBraceInit{1};
__declspec(dllimport) constexpr static int ConstexprField = 1;
#if __cplusplus < 201703L && !defined(MS)
// expected-note@+2{{attribute is here}}
#endif
__declspec(dllimport) constexpr static int ConstexprFieldDef = 1;
};
// NB: MSVC is inconsistent here and disallows *InlineDef on class templates,
// but allows it on classes. We allow both.
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'ImportClassTmplMembers::normalDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'ImportClassTmplMembers::normalDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template <typename T>
void ImportClassTmplMembers<T>::normalDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportClassTmplMembers::normalInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
template<typename T> inline void ImportClassTmplMembers<T>::normalInlineDef() {}
template<typename T> void ImportClassTmplMembers<T>::normalInlineDecl() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'ImportClassTmplMembers::virtualDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'ImportClassTmplMembers::virtualDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template <typename T>
void ImportClassTmplMembers<T>::virtualDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportClassTmplMembers::virtualInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
template<typename T> inline void ImportClassTmplMembers<T>::virtualInlineDef() {}
template<typename T> void ImportClassTmplMembers<T>::virtualInlineDecl() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+5{{'ImportClassTmplMembers::staticDef' redeclared without 'dllimport' attribute: 'dllexport' attribute added}}
#else
// expected-warning@+3{{'ImportClassTmplMembers::staticDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
template <typename T>
void ImportClassTmplMembers<T>::staticDef() {}
#ifdef GNU
// expected-warning@+2{{'ImportClassTmplMembers::staticInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#endif
template<typename T> inline void ImportClassTmplMembers<T>::staticInlineDef() {}
template<typename T> void ImportClassTmplMembers<T>::staticInlineDecl() {}
template<typename T> int ImportClassTmplMembers<T>::StaticFieldDef; // expected-warning{{definition of dllimport static field}}
template<typename T> const int ImportClassTmplMembers<T>::StaticConstFieldDef = 1; // expected-warning{{definition of dllimport static field}}
#if __cplusplus < 201703L && !defined(MS)
// expected-warning@+2{{definition of dllimport static field}}
#endif
template<typename T> constexpr int ImportClassTmplMembers<T>::ConstexprFieldDef;
// Redeclarations cannot add dllimport.
template<typename T>
struct CTMR /*ClassTmplMemberRedecl*/ {
void normalDef(); // expected-note{{previous declaration is here}}
inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
virtual void virtualDef(); // expected-note{{previous declaration is here}}
virtual inline void virtualInlineDecl(); // expected-note{{previous declaration is here}}
static void staticDef(); // expected-note{{previous declaration is here}}
static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+4{{previous declaration is here}}
// expected-note@+4{{previous declaration is here}}
// expected-note@+4{{previous declaration is here}}
#endif
void normalInlineDef();
virtual void virtualInlineDef();
static void staticInlineDef();
static int StaticField; // expected-note{{previous declaration is here}}
static const int StaticConstField; // expected-note{{previous declaration is here}}
constexpr static int ConstexprField = 1; // expected-note-re{{previous {{(declaration|definition)}} is here}}
};
template<typename T> __declspec(dllimport) void CTMR<T>::normalDef() {} // expected-error{{redeclaration of 'CTMR::normalDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
template<typename T> __declspec(dllimport) void CTMR<T>::normalInlineDecl() {} // expected-error{{redeclaration of 'CTMR::normalInlineDecl' cannot add 'dllimport' attribute}}
template<typename T> __declspec(dllimport) void CTMR<T>::virtualDef() {} // expected-error{{redeclaration of 'CTMR::virtualDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
template<typename T> __declspec(dllimport) void CTMR<T>::virtualInlineDecl() {} // expected-error{{redeclaration of 'CTMR::virtualInlineDecl' cannot add 'dllimport' attribute}}
template<typename T> __declspec(dllimport) void CTMR<T>::staticDef() {} // expected-error{{redeclaration of 'CTMR::staticDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
template<typename T> __declspec(dllimport) void CTMR<T>::staticInlineDecl() {} // expected-error{{redeclaration of 'CTMR::staticInlineDecl' cannot add 'dllimport' attribute}}
#if defined(MS) || defined(WI) || defined(PS)
template<typename T> __declspec(dllimport) inline void CTMR<T>::normalInlineDef() {} // expected-error{{redeclaration of 'CTMR::normalInlineDef' cannot add 'dllimport' attribute}}
template<typename T> __declspec(dllimport) inline void CTMR<T>::virtualInlineDef() {} // expected-error{{redeclaration of 'CTMR::virtualInlineDef' cannot add 'dllimport' attribute}}
template<typename T> __declspec(dllimport) inline void CTMR<T>::staticInlineDef() {} // expected-error{{redeclaration of 'CTMR::staticInlineDef' cannot add 'dllimport' attribute}}
#else
template<typename T> __declspec(dllimport) inline void CTMR<T>::normalInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) inline void CTMR<T>::virtualInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> __declspec(dllimport) inline void CTMR<T>::staticInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
template<typename T> __declspec(dllimport) int CTMR<T>::StaticField = 1; // expected-error{{redeclaration of 'CTMR::StaticField' cannot add 'dllimport' attribute}}
// expected-warning@-1{{definition of dllimport static field}}
// expected-note@-2{{attribute is here}}
template<typename T> __declspec(dllimport) const int CTMR<T>::StaticConstField = 1; // expected-error{{redeclaration of 'CTMR::StaticConstField' cannot add 'dllimport' attribute}}
// expected-warning@-1{{definition of dllimport static field}}
// expected-note@-2{{attribute is here}}
#if __cplusplus < 201703L && !defined(MS)
// expected-error@+6{{redeclaration of 'CTMR::ConstexprField' cannot add 'dllimport' attribute}}
// expected-warning@+5{{definition of dllimport static field}}
// expected-note@+4{{attribute is here}}
#else
// expected-warning@+2{{attribute declaration must precede definition}}
#endif
template<typename T> __declspec(dllimport) constexpr int CTMR<T>::ConstexprField;
// MSVC imports explicit specialization of imported class template member
// function, and errors on such definitions. MinGW does not treat them as
// dllimport.
template <typename> struct ClassTmpl {
#if !defined(GNU)
// expected-note@+2{{attribute is here}}
#endif
void __declspec(dllimport) importedNormal();
#if !defined(GNU)
// expected-note@+2{{attribute is here}}
#endif
static void __declspec(dllimport) importedStatic();
};
#if !defined(GNU)
// expected-error@+2{{cannot define non-inline dllimport template specialization}}
#endif
template<> void ClassTmpl<int>::importedNormal() {}
#if !defined(GNU)
// expected-error@+2{{cannot define non-inline dllimport template specialization}}
#endif
template<> void ClassTmpl<int>::importedStatic() {}
#if !defined(GNU)
// expected-error@+3{{cannot define non-inline dllimport template specialization}}
// expected-error@+2{{attribute 'dllimport' cannot be applied to a deleted function}}
#endif
template <> void ImportClassTmplMembers<int>::normalDecl() = delete;
//===----------------------------------------------------------------------===//
// Class template member templates
//===----------------------------------------------------------------------===//
template<typename T>
struct ImportClsTmplMemTmpl {
template<typename U> __declspec(dllimport) void normalDecl();
template<typename U> __declspec(dllimport) void normalDef(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename U> __declspec(dllimport) void normalInlineDef();
template<typename U> __declspec(dllimport) static void staticDecl();
template<typename U> __declspec(dllimport) static void staticDef(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename U> __declspec(dllimport) static void staticInlineDef();
#ifdef GNU
// expected-warning@+5{{'dllimport' attribute ignored on inline function}}
// expected-warning@+8{{'dllimport' attribute ignored on inline function}}
// expected-warning@+8{{'dllimport' attribute ignored on inline function}}
// expected-warning@+11{{'dllimport' attribute ignored on inline function}}
#endif
template<typename U> __declspec(dllimport) void normalInclass() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename U> __declspec(dllimport) inline void normalInlineDecl();
template<typename U> __declspec(dllimport) static void staticInclass() {}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+2{{previous declaration is here}} expected-note@+2{{previous attribute is here}}
#endif
template<typename U> __declspec(dllimport) static inline void staticInlineDecl();
#if __has_feature(cxx_variable_templates)
template<typename U> __declspec(dllimport) static int StaticField;
template<typename U> __declspec(dllimport) static int StaticFieldDef; // expected-note{{attribute is here}}
template<typename U> __declspec(dllimport) static const int StaticConstField;
template<typename U> __declspec(dllimport) static const int StaticConstFieldDef; // expected-note{{attribute is here}}
template<typename U> __declspec(dllimport) static const int StaticConstFieldEqualInit = 1;
template<typename U> __declspec(dllimport) static const int StaticConstFieldBraceInit{1};
template<typename U> __declspec(dllimport) constexpr static int ConstexprField = 1;
#ifdef MS
template<typename U> __declspec(dllimport) constexpr static int ConstexprFieldDef = 1;
#endif
#endif // __has_feature(cxx_variable_templates)
};
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::normalDef() {} // expected-warning{{'ImportClsTmplMemTmpl::normalDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::staticDef() {} // expected-warning{{'ImportClsTmplMemTmpl::staticDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#ifdef GNU
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::normalInlineDecl() {}
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::staticInlineDecl() {}
#else
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::normalInlineDecl() {} // expected-warning{{'ImportClsTmplMemTmpl::normalInlineDecl' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> template<typename U> void ImportClsTmplMemTmpl<T>::staticInlineDecl() {} // expected-warning{{'ImportClsTmplMemTmpl::staticInlineDecl' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
#ifdef GNU
template<typename T> template<typename U> inline void ImportClsTmplMemTmpl<T>::normalInlineDef() {} // expected-warning{{'ImportClsTmplMemTmpl::normalInlineDef' redeclared inline; 'dllimport' attribute ignored}}
template<typename T> template<typename U> inline void ImportClsTmplMemTmpl<T>::staticInlineDef() {} // expected-warning{{'ImportClsTmplMemTmpl::staticInlineDef' redeclared inline; 'dllimport' attribute ignored}}
#else
template<typename T> template<typename U> inline void ImportClsTmplMemTmpl<T>::normalInlineDef() {} // expected-warning{{'ImportClsTmplMemTmpl::normalInlineDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
template<typename T> template<typename U> inline void ImportClsTmplMemTmpl<T>::staticInlineDef() {} // expected-warning{{'ImportClsTmplMemTmpl::staticInlineDef' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}
#endif
#if __has_feature(cxx_variable_templates)
template<typename T> template<typename U> int ImportClsTmplMemTmpl<T>::StaticFieldDef; // expected-warning{{definition of dllimport static field}}
template<typename T> template<typename U> const int ImportClsTmplMemTmpl<T>::StaticConstFieldDef = 1; // expected-warning{{definition of dllimport static field}}
#ifdef MS
template<typename T> template<typename U> constexpr int ImportClsTmplMemTmpl<T>::ConstexprFieldDef;
#endif
#endif // __has_feature(cxx_variable_templates)
// Redeclarations cannot add dllimport.
template<typename T>
struct CTMTR /*ClassTmplMemberTmplRedecl*/ {
template<typename U> void normalDef(); // expected-note{{previous declaration is here}}
template<typename U> inline void normalInlineDecl(); // expected-note{{previous declaration is here}}
template<typename U> static void staticDef(); // expected-note{{previous declaration is here}}
template<typename U> static inline void staticInlineDecl(); // expected-note{{previous declaration is here}}
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+3{{previous declaration is here}}
// expected-note@+3{{previous declaration is here}}
#endif
template<typename U> void normalInlineDef();
template<typename U> static void staticInlineDef();
#if __has_feature(cxx_variable_templates)
template<typename U> static int StaticField; // expected-note{{previous declaration is here}}
template<typename U> static const int StaticConstField; // expected-note{{previous declaration is here}}
#ifdef MS
template<typename U> constexpr static int ConstexprField = 1; // expected-note{{previous definition is here}}
#endif
#endif // __has_feature(cxx_variable_templates)
};
template<typename T> template<typename U> __declspec(dllimport) void CTMTR<T>::normalDef() {} // expected-error{{redeclaration of 'CTMTR::normalDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
template<typename T> template<typename U> __declspec(dllimport) void CTMTR<T>::normalInlineDecl() {} // expected-error{{redeclaration of 'CTMTR::normalInlineDecl' cannot add 'dllimport' attribute}}
template<typename T> template<typename U> __declspec(dllimport) void CTMTR<T>::staticDef() {} // expected-error{{redeclaration of 'CTMTR::staticDef' cannot add 'dllimport' attribute}}
// expected-error@-1{{dllimport cannot be applied to non-inline function definition}}
template<typename T> template<typename U> __declspec(dllimport) void CTMTR<T>::staticInlineDecl() {} // expected-error{{redeclaration of 'CTMTR::staticInlineDecl' cannot add 'dllimport' attribute}}
#if defined(MS) || defined(WI) || defined(PS)
template<typename T> template<typename U> __declspec(dllimport) inline void CTMTR<T>::normalInlineDef() {} // expected-error{{redeclaration of 'CTMTR::normalInlineDef' cannot add 'dllimport' attribute}}
template<typename T> template<typename U> __declspec(dllimport) inline void CTMTR<T>::staticInlineDef() {} // expected-error{{redeclaration of 'CTMTR::staticInlineDef' cannot add 'dllimport' attribute}}
#else
template<typename T> template<typename U> __declspec(dllimport) inline void CTMTR<T>::normalInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
template<typename T> template<typename U> __declspec(dllimport) inline void CTMTR<T>::staticInlineDef() {} // expected-warning{{'dllimport' attribute ignored on inline function}}
#endif
#if __has_feature(cxx_variable_templates)
template<typename T> template<typename U> __declspec(dllimport) int CTMTR<T>::StaticField = 1; // expected-error{{redeclaration of 'CTMTR::StaticField' cannot add 'dllimport' attribute}}
// expected-warning@-1{{definition of dllimport static field}}
// expected-note@-2{{attribute is here}}
template<typename T> template<typename U> __declspec(dllimport) const int CTMTR<T>::StaticConstField = 1; // expected-error{{redeclaration of 'CTMTR::StaticConstField' cannot add 'dllimport' attribute}}
// expected-warning@-1{{definition of dllimport static field}}
// expected-note@-2{{attribute is here}}
#ifdef MS
// expected-warning@+1{{attribute declaration must precede definition}}
template<typename T> template<typename U> __declspec(dllimport) constexpr int CTMTR<T>::ConstexprField;
#endif
#endif // __has_feature(cxx_variable_templates)
//===----------------------------------------------------------------------===//
// Classes
//===----------------------------------------------------------------------===//
namespace {
struct __declspec(dllimport) AnonymousClass {}; // expected-error{{(anonymous namespace)::AnonymousClass' must have external linkage when declared 'dllimport'}}
}
class __declspec(dllimport) ClassDecl;
class __declspec(dllimport) ClassDef { };
template <typename T> class ClassTemplate {};
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+5{{previous attribute is here}}
// expected-note@+4{{previous attribute is here}}
// expected-error@+4{{attribute 'dllexport' cannot be applied to member of 'dllimport' class}}
// expected-error@+4{{attribute 'dllimport' cannot be applied to member of 'dllimport' class}}
#endif
class __declspec(dllimport) ImportClassWithDllMember {
void __declspec(dllexport) foo();
void __declspec(dllimport) bar();
};
#if defined(MS) || defined(WI) || defined(PS)
// expected-note@+5{{previous attribute is here}}
// expected-note@+4{{previous attribute is here}}
// expected-error@+4{{attribute 'dllimport' cannot be applied to member of 'dllexport' class}}
// expected-error@+4{{attribute 'dllexport' cannot be applied to member of 'dllexport' class}}
#endif
template <typename T> class __declspec(dllexport) ExportClassWithDllMember {
void __declspec(dllimport) foo();
void __declspec(dllexport) bar();
};
namespace ImportedExplicitSpecialization {
template <typename T> struct S { static int x; };
template <typename T> int S<T>::x = sizeof(T);
template <> struct __declspec(dllimport) S<int> { static int x; }; // expected-note{{attribute is here}}
int S<int>::x = -1; // expected-error{{definition of dllimport static field not allowed}}
}
namespace PR19988 {
// Don't error about applying delete to dllimport member function when instantiating.
template <typename> struct __declspec(dllimport) S {
void foo() = delete;
};
S<int> s;
}
#if defined(MS) || defined(WI) || defined(PS)
// expected-warning@+3{{'dllimport' attribute ignored}}
#endif
template <typename T> struct PartiallySpecializedClassTemplate {};
template <typename T> struct __declspec(dllimport) PartiallySpecializedClassTemplate<T*> { void f() {} };
template <typename T> struct ExpliciallySpecializedClassTemplate {};
template <> struct __declspec(dllimport) ExpliciallySpecializedClassTemplate<int> { void f() {} };
//===----------------------------------------------------------------------===//
// Classes with template base classes
//===----------------------------------------------------------------------===//
class __declspec(dllexport) ExportedClass {};
class __declspec(dllimport) ImportedClass {};
template <typename T> class __declspec(dllexport) ExportedClassTemplate {};
#if !defined(MS) && !defined(PS)
// expected-error@+2{{'ImportedClassTemplate<LocalCRTP>' must have external linkage when declared 'dllimport'}}
#endif
template <typename T> class __declspec(dllimport) ImportedClassTemplate {};
// ClassTemplate<int> gets imported.
class __declspec(dllimport) DerivedFromTemplate : public ClassTemplate<int> {};
// ClassTemplate<int> is already imported.
class __declspec(dllimport) DerivedFromTemplate2 : public ClassTemplate<int> {};
// ImportedClassTemplate is expliitly imported.
class __declspec(dllimport) DerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
// ExportedClassTemplate is explicitly exported.
class __declspec(dllimport) DerivedFromExportedTemplate : public ExportedClassTemplate<int> {};
class DerivedFromTemplateD : public ClassTemplate<double> {};
// Base class previously implicitly instantiated without attribute; it will get propagated.
class __declspec(dllimport) DerivedFromTemplateD2 : public ClassTemplate<double> {};
// Base class has explicit instantiation declaration; the attribute will get propagated.
extern template class ClassTemplate<float>;
class __declspec(dllimport) DerivedFromTemplateF : public ClassTemplate<float> {};
class __declspec(dllimport) DerivedFromTemplateB : public ClassTemplate<bool> {};
// The second derived class doesn't change anything, the attribute that was propagated first wins.
class __declspec(dllexport) DerivedFromTemplateB2 : public ClassTemplate<bool> {};
template <typename T> struct ExplicitlySpecializedTemplate { void func() {} };
#if defined(MS) || defined(PS)
// expected-note@+2{{class template 'ExplicitlySpecializedTemplate<int>' was explicitly specialized here}}
#endif
template <> struct ExplicitlySpecializedTemplate<int> { void func() {} };
template <typename T> struct ExplicitlyExportSpecializedTemplate { void func() {} };
template <> struct __declspec(dllexport) ExplicitlyExportSpecializedTemplate<int> { void func() {} };
template <typename T> struct ExplicitlyImportSpecializedTemplate { void func() {} };
template <> struct __declspec(dllimport) ExplicitlyImportSpecializedTemplate<int> { void func() {} };
template <typename T> struct ExplicitlyInstantiatedTemplate { void func() {} };
#if defined(MS) || defined(PS)
// expected-note@+2{{class template 'ExplicitlyInstantiatedTemplate<int>' was instantiated here}}
#endif
template struct ExplicitlyInstantiatedTemplate<int>;
template <typename T> struct ExplicitlyExportInstantiatedTemplate { void func() {} };
template struct __declspec(dllexport) ExplicitlyExportInstantiatedTemplate<int>;
template <typename T> struct ExplicitlyImportInstantiatedTemplate { void func() {} };
template struct __declspec(dllimport) ExplicitlyImportInstantiatedTemplate<int>;
#if defined(MS) || defined(PS)
// expected-warning@+3{{propagating dll attribute to explicitly specialized base class template without dll attribute is not supported}}
// expected-note@+2{{attribute is here}}
#endif
struct __declspec(dllimport) DerivedFromExplicitlySpecializedTemplate : public ExplicitlySpecializedTemplate<int> {};
// Base class already specialized with export attribute.
struct __declspec(dllimport) DerivedFromExplicitlyExportSpecializedTemplate : public ExplicitlyExportSpecializedTemplate<int> {};
// Base class already specialized with import attribute.
struct __declspec(dllimport) DerivedFromExplicitlyImportSpecializedTemplate : public ExplicitlyImportSpecializedTemplate<int> {};
#if defined(MS) || defined(PS)
// expected-warning@+3{{propagating dll attribute to already instantiated base class template without dll attribute is not supported}}
// expected-note@+2{{attribute is here}}
#endif
struct __declspec(dllimport) DerivedFromExplicitlyInstantiatedTemplate : public ExplicitlyInstantiatedTemplate<int> {};
// Base class already instantiated with export attribute.
struct __declspec(dllimport) DerivedFromExplicitlyExportInstantiatedTemplate : public ExplicitlyExportInstantiatedTemplate<int> {};
// Base class already instantiated with import attribute.
struct __declspec(dllimport) DerivedFromExplicitlyImportInstantiatedTemplate : public ExplicitlyImportInstantiatedTemplate<int> {};
template <typename T> struct ExplicitInstantiationDeclTemplateBase { void func() {} };
extern template struct ExplicitInstantiationDeclTemplateBase<int>;
struct __declspec(dllimport) DerivedFromExplicitInstantiationDeclTemplateBase : public ExplicitInstantiationDeclTemplateBase<int> {};
void func() {
// MSVC propagates dllimport to derived classes even if they don't have external linkage.
class LocalDerivedFromImportedClass : public ImportedClass {};
class LocalDerivedFromImportedTemplate : public ImportedClassTemplate<int> {};
#if defined(GNU) || defined(WI)
// expected-note@+2{{in instantiation of template class 'ImportedClassTemplate<LocalCRTP>' requested here}}
#endif
class LocalCRTP : public ImportedClassTemplate<LocalCRTP> {};
}
//===----------------------------------------------------------------------===//
// Lambdas
//===----------------------------------------------------------------------===//
// The MS ABI doesn't provide a stable mangling for lambdas, so they can't be imported or exported.
#if defined(MS) || defined(WI) || defined(PS)
// expected-error@+4{{lambda cannot be declared 'dllimport'}}
#else
// expected-warning@+2{{'dllimport' attribute ignored on inline function}}
#endif
auto Lambda = []() __declspec(dllimport) -> bool { return true; };