// 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_Imported {};
struct ExplicitDecl_Imported {};
struct ExplicitInst_Imported {};
struct ExplicitSpec_Imported {};
struct ExplicitSpec_Def_Imported {};
struct ExplicitSpec_InlineDef_Imported {};
struct ExplicitSpec_NotImported {};


// Invalid usage.
__declspec(dllimport) typedef int typedef1; // expected-warning{{'dllimport' attribute only applies to variables and functions}}
typedef __declspec(dllimport) int typedef2; // expected-warning{{'dllimport' attribute only applies to variables and functions}}
typedef int __declspec(dllimport) typedef3; // expected-warning{{'dllimport' attribute only applies to variables and functions}}
typedef __declspec(dllimport) void (*FunTy)(); // expected-warning{{'dllimport' attribute only applies to variables and functions}}
enum __declspec(dllimport) Enum {}; // expected-warning{{'dllimport' attribute only applies to variables and functions}}
#if __has_feature(cxx_strong_enums)
  enum class __declspec(dllimport) EnumClass {}; // expected-warning{{'dllimport' attribute only applies to variables and functions}}
#endif



//===----------------------------------------------------------------------===//
// Globals
//===----------------------------------------------------------------------===//

// Import declaration.
__declspec(dllimport) extern int ExternGlobalDecl;

// dllimport implies a declaration.
__declspec(dllimport) int GlobalDecl;

// 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.
__declspec(dllimport) extern int ExternGlobalDeclInit;
int ExternGlobalDeclInit = 1; // expected-error{{definition of dllimport data}}

// Redeclarations
__declspec(dllimport) extern int GlobalRedecl1;
__declspec(dllimport) extern int GlobalRedecl1;

// Import in local scope.
void functionScope() {
  __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}}
}



//===----------------------------------------------------------------------===//
// Functions
//===----------------------------------------------------------------------===//

// Import function declaration. Check different placements.
__attribute__((dllimport)) void decl1A(); // Sanity 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' attribute can be applied only to symbol declaration}}

// extern  "C"
extern "C" __declspec(dllexport) void externC();

// Import inline function.
__declspec(dllimport) inline void inlineFunc1() {} // expected-warning{{'dllimport' attribute ignored}}
inline void __attribute__((dllimport)) inlineFunc2() {} // expected-warning{{'dllimport' attribute ignored}}

// Redeclarations
__declspec(dllimport) void redecl1();
__declspec(dllimport) void redecl1();

__declspec(dllimport) void redecl3();
                      void redecl3() {} // expected-warning{{'redecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}



//===----------------------------------------------------------------------===//
// Function templates
//===----------------------------------------------------------------------===//

// Import function template declaration. Check different placements.
template<typename T> __declspec(dllimport) void funcTmplDecl1();
template<typename T> void __declspec(dllimport) funcTmplDecl2();

// Redeclarations
template<typename T> __declspec(dllimport) void funcTmplRedecl1();
template<typename T> __declspec(dllimport) void funcTmplRedecl1();

template<typename T> __declspec(dllimport) void funcTmplRedecl2();
template<typename T>                       void funcTmplRedecl2();

template<typename T> __declspec(dllimport) void funcTmplRedecl3();
template<typename T>                       void funcTmplRedecl3() {} // expected-warning{{'funcTmplRedecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}}


template<typename T> void funcTmpl() {}
template<typename T> __declspec(dllimport) void importedFuncTmpl();

// 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' attribute can be applied only to symbol declaration}}
template<> __declspec(dllimport) inline void importedFuncTmpl<ExplicitSpec_InlineDef_Imported>() {} // expected-warning{{'dllimport' attribute ignored}}

// 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>();

// 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' attribute can be applied only to symbol declaration}}
template<> __declspec(dllimport) inline void funcTmpl<ExplicitSpec_InlineDef_Imported>() {} // expected-warning{{'dllimport' attribute ignored}}