llvm-project/clang/test/SemaCXX/MicrosoftCompatibility-cxx98.cpp

// RUN: %clang_cc1 %s -triple i686-pc-win32 -fsyntax-only -std=c++98 -Wmicrosoft -verify -fms-compatibility -fexceptions -fcxx-exceptions


//MSVC allows forward enum declaration
enum ENUM; // expected-warning {{forward references to 'enum' types are a Microsoft extension}}
ENUM *var = 0;     
ENUM var2 = (ENUM)3;
enum ENUM1* var3 = 0;// expected-warning {{forward references to 'enum' types are a Microsoft extension}}

typedef void (*FnPtrTy)();
void (*PR23733_1)() = static_cast<FnPtrTy>((void *)0); // expected-warning {{static_cast between pointer-to-function and pointer-to-object is a Microsoft extension}}
void (*PR23733_2)() = FnPtrTy((void *)0);
void (*PR23733_3)() = (FnPtrTy)((void *)0);
void (*PR23733_4)() = reinterpret_cast<FnPtrTy>((void *)0);

long function_prototype(int a);
long (*function_ptr)(int a);

void function_to_voidptr_conv() {
  void *a1 = function_prototype;  // expected-warning {{implicit conversion between pointer-to-function and pointer-to-object is a Microsoft extension}}
  void *a2 = &function_prototype; // expected-warning {{implicit conversion between pointer-to-function and pointer-to-object is a Microsoft extension}}
  void *a3 = function_ptr;        // expected-warning {{implicit conversion between pointer-to-function and pointer-to-object is a Microsoft extension}}
}