// RUN: %clang_cc1 -std=c++14 -triple i686-pc-win32 -fms-extensions -DMSABI -verify %s
// RUN: %clang_cc1 -std=c++14 -triple i686-pc-mingw32 -verify %s
// RUN: %clang_cc1 -std=c++14 -triple i686-pc-mingw32 -fms-extensions -verify %s
typedef void void_fun_t();
typedef void __cdecl cdecl_fun_t();
// Pointers to free functions
void free_func_default(); // expected-note 2 {{previous declaration is here}}
void __cdecl free_func_cdecl(); // expected-note 2 {{previous declaration is here}}
void __stdcall free_func_stdcall(); // expected-note 2 {{previous declaration is here}}
void __fastcall free_func_fastcall(); // expected-note 2 {{previous declaration is here}}
void __vectorcall free_func_vectorcall(); // expected-note 2 {{previous declaration is here}}
void __cdecl free_func_default();
void __stdcall free_func_default(); // expected-error {{function declared 'stdcall' here was previously declared without calling convention}}
void __fastcall free_func_default(); // expected-error {{function declared 'fastcall' here was previously declared without calling convention}}
void free_func_cdecl();
void __stdcall free_func_cdecl(); // expected-error {{function declared 'stdcall' here was previously declared 'cdecl'}}
void __fastcall free_func_cdecl(); // expected-error {{function declared 'fastcall' here was previously declared 'cdecl'}}
void free_func_stdcall();
void __cdecl free_func_stdcall(); // expected-error {{function declared 'cdecl' here was previously declared 'stdcall'}}
void __fastcall free_func_stdcall(); // expected-error {{function declared 'fastcall' here was previously declared 'stdcall'}}
void __cdecl free_func_fastcall(); // expected-error {{function declared 'cdecl' here was previously declared 'fastcall'}}
void __stdcall free_func_fastcall(); // expected-error {{function declared 'stdcall' here was previously declared 'fastcall'}}
void free_func_fastcall();
void __cdecl free_func_vectorcall(); // expected-error {{function declared 'cdecl' here was previously declared 'vectorcall'}}
void __stdcall free_func_vectorcall(); // expected-error {{function declared 'stdcall' here was previously declared 'vectorcall'}}
void free_func_vectorcall();
// Overloaded functions may have different calling conventions
void __fastcall free_func_default(int);
void __cdecl free_func_default(int *);
void __thiscall free_func_cdecl(char *);
void __cdecl free_func_cdecl(double);
typedef void void_fun_t();
typedef void __cdecl cdecl_fun_t();
// Pointers to member functions
struct S {
void member_default1(); // expected-note {{previous declaration is here}}
void member_default2();
void __cdecl member_cdecl1();
void __cdecl member_cdecl2(); // expected-note {{previous declaration is here}}
void __thiscall member_thiscall1();
void __thiscall member_thiscall2(); // expected-note {{previous declaration is here}}
void __vectorcall member_vectorcall1();
void __vectorcall member_vectorcall2(); // expected-note {{previous declaration is here}}
// Typedefs carrying the __cdecl convention are adjusted to __thiscall.
void_fun_t member_typedef_default; // expected-note {{previous declaration is here}}
cdecl_fun_t member_typedef_cdecl1; // expected-note {{previous declaration is here}}
cdecl_fun_t __cdecl member_typedef_cdecl2;
void_fun_t __stdcall member_typedef_stdcall;
// Static member functions can't be __thiscall
static void static_member_default1();
static void static_member_default2();
static void static_member_default3(); // expected-note {{previous declaration is here}}
static void __cdecl static_member_cdecl1();
static void __cdecl static_member_cdecl2(); // expected-note {{previous declaration is here}}
static void __stdcall static_member_stdcall1();
static void __stdcall static_member_stdcall2();
// Variadic functions can't be other than default or __cdecl
void member_variadic_default(int x, ...);
void __cdecl member_variadic_cdecl(int x, ...);
static void static_member_variadic_default(int x, ...);
static void __cdecl static_member_variadic_cdecl(int x, ...);
// Structors can't be other than default in MS ABI environment
#ifdef MSABI
__vectorcall S(); // expected-warning {{vectorcall calling convention ignored on constructor/destructor}}
#endif
};
void __cdecl S::member_default1() {} // expected-error {{function declared 'cdecl' here was previously declared without calling convention}}
void __thiscall S::member_default2() {}
void __cdecl S::member_typedef_default() {} // expected-error {{function declared 'cdecl' here was previously declared without calling convention}}
void __cdecl S::member_typedef_cdecl1() {} // expected-error {{function declared 'cdecl' here was previously declared without calling convention}}
void __cdecl S::member_typedef_cdecl2() {}
void __stdcall S::member_typedef_stdcall() {}
void S::member_cdecl1() {}
void __thiscall S::member_cdecl2() {} // expected-error {{function declared 'thiscall' here was previously declared 'cdecl'}}
void S::member_thiscall1() {}
void __cdecl S::member_thiscall2() {} // expected-error {{function declared 'cdecl' here was previously declared 'thiscall'}}
void S::member_vectorcall1() {}
void __cdecl S::member_vectorcall2() {} // expected-error {{function declared 'cdecl' here was previously declared 'vectorcall'}}
void S::static_member_default1() {}
void __cdecl S::static_member_default2() {}
void __stdcall S::static_member_default3() {} // expected-error {{function declared 'stdcall' here was previously declared without calling convention}}
void S::static_member_cdecl1() {}
void __stdcall S::static_member_cdecl2() {} // expected-error {{function declared 'stdcall' here was previously declared 'cdecl'}}
void __cdecl S::member_variadic_default(int x, ...) { (void)x; }
void S::member_variadic_cdecl(int x, ...) { (void)x; }
void __cdecl S::static_member_variadic_default(int x, ...) { (void)x; }
void S::static_member_variadic_cdecl(int x, ...) { (void)x; }
// Declare a template using a calling convention.
template <class CharT> inline int __cdecl mystrlen(const CharT *str) {
int i;
for (i = 0; str[i]; i++) { }
return i;
}
extern int sse_strlen(const char *str);
template <> inline int __cdecl mystrlen(const char *str) {
return sse_strlen(str);
}
void use_tmpl(const char *str, const int *ints) {
mystrlen(str);
mystrlen(ints);
}
struct MixedCCStaticOverload {
static void overloaded(int a);
static void __stdcall overloaded(short a);
};
void MixedCCStaticOverload::overloaded(int a) {}
void MixedCCStaticOverload::overloaded(short a) {}
// Friend function decls are cdecl by default, not thiscall. Friend method
// decls should always be redeclarations, because the class cannot be
// incomplete.
struct FriendClass {
void friend_method() {}
};
void __stdcall friend_stdcall1() {}
class MakeFriendDecls {
int x;
friend void FriendClass::friend_method();
friend void friend_default();
friend void friend_stdcall1();
friend void __stdcall friend_stdcall2();
friend void friend_stdcall3(); // expected-note {{previous declaration is here}}
};
void friend_default() {}
void __stdcall friend_stdcall3() {} // expected-error {{function declared 'stdcall' here was previously declared without calling convention}}
void __stdcall friend_stdcall2() {}
// Test functions with multiple attributes.
void __attribute__((noreturn)) __stdcall __attribute__((regparm(1))) multi_attribute(int x);
void multi_attribute(int x) { __builtin_unreachable(); }
// expected-error@+3 {{vectorcall and cdecl attributes are not compatible}}
// expected-error@+2 {{stdcall and cdecl attributes are not compatible}}
// expected-error@+1 {{fastcall and cdecl attributes are not compatible}}
void __cdecl __cdecl __stdcall __cdecl __fastcall __vectorcall multi_cc(int x);
template <typename T> void __stdcall StdcallTemplate(T) {}
template <> void StdcallTemplate<int>(int) {}
template <> void __stdcall StdcallTemplate<short>(short) {}
// FIXME: Note the template, not the implicit instantiation.
// expected-error@+2 {{function declared 'cdecl' here was previously declared 'stdcall}}
// expected-note@+1 {{previous declaration is here}}
template <> void __cdecl StdcallTemplate<long>(long) {}
struct ExactlyInt {
template <typename T> static int cast_to_int(T) {
return T::this_is_not_an_int();
}
};
template <> inline int ExactlyInt::cast_to_int<int>(int x) { return x; }
namespace test2 {
class foo {
template <typename T> void bar(T v);
};
extern template void foo::bar(const void *);
}
namespace test3 {
struct foo {
typedef void bar();
};
bool zed(foo::bar *);
void bah() {}
void baz() { zed(bah); }
}
namespace test4 {
class foo {
template <typename T> static void bar(T v);
};
extern template void foo::bar(const void *);
}
namespace test5 {
template <class T>
class valarray {
void bar();
};
extern template void valarray<int>::bar();
}
namespace test6 {
struct foo {
int bar();
};
typedef int bar_t();
void zed(bar_t foo::*) {
}
void baz() {
zed(&foo::bar);
}
}
namespace test7 {
template <typename T>
struct S {
void f(T t) {
t = 42;
}
};
template<> void S<void*>::f(void*);
void g(S<void*> s, void* p) {
s.f(p);
}
}
namespace test8 {
template <typename T>
struct S {
void f(T t) { // expected-note {{previous declaration is here}}
t = 42; // expected-error {{assigning to 'void *' from incompatible type 'int'}}
}
};
template<> void __cdecl S<void*>::f(void*); // expected-error {{function declared 'cdecl' here was previously declared without calling convention}}
void g(S<void*> s, void* p) {
s.f(p); // expected-note {{in instantiation of member function 'test8::S<void *>::f' requested here}}
}
}
namespace test9 {
// Used to fail when we forgot to make lambda call operators use __thiscall.
template <typename F>
decltype(auto) deduce(F f) {
return &decltype(f)::operator();
}
template <typename C, typename R, typename A>
decltype(auto) signaturehelper(R (C::*f)(A) const) {
return R();
}
void f() {
auto l = [](int x) { return x * 2; };
decltype(signaturehelper(deduce(l))) p;
}
}