// RUN: %clang_cc1 -std=c++98 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu
// RUN: %clang_cc1 -std=c++98 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -fms-compatibility
// RUN: %clang_cc1 -std=c++11 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu
// RUN: %clang_cc1 -std=c++11 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -fms-compatibility
// RUN: %clang_cc1 -std=c++14 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu
// RUN: %clang_cc1 -std=c++14 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -fms-compatibility
// RUN: %clang_cc1 -std=c++17 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu
// RUN: %clang_cc1 -std=c++17 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -fms-compatibility
// RUN: %clang_cc1 -std=c++2a %s -Wno-parentheses -Wdeprecated -verify=expected,cxx20 -triple x86_64-linux-gnu
// RUN: %clang_cc1 -std=c++2a %s -Wno-parentheses -Wdeprecated -verify=expected,cxx20 -triple x86_64-linux-gnu -fms-compatibility
// RUN: %clang_cc1 -std=c++14 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -Wno-deprecated-register -DNO_DEPRECATED_FLAGS
// RUN: %clang_cc1 -std=c++14 %s -Wno-parentheses -Wdeprecated -verify=expected,not-cxx20 -triple x86_64-linux-gnu -Wno-deprecated-register -DNO_DEPRECATED_FLAGS -fms-compatibility
#include "Inputs/register.h"
namespace std {
struct type_info {};
}
void g() throw();
void h() throw(int);
void i() throw(...);
#if __cplusplus > 201402L
// expected-warning@-4 {{dynamic exception specifications are deprecated}} expected-note@-4 {{use 'noexcept' instead}}
// expected-error@-4 {{ISO C++17 does not allow dynamic exception specifications}} expected-note@-4 {{use 'noexcept(false)' instead}}
// expected-error@-4 {{ISO C++17 does not allow dynamic exception specifications}} expected-note@-4 {{use 'noexcept(false)' instead}}
#elif __cplusplus >= 201103L
// expected-warning@-8 {{dynamic exception specifications are deprecated}} expected-note@-8 {{use 'noexcept' instead}}
// expected-warning@-8 {{dynamic exception specifications are deprecated}} expected-note@-8 {{use 'noexcept(false)' instead}}
// expected-warning@-8 {{dynamic exception specifications are deprecated}} expected-note@-8 {{use 'noexcept(false)' instead}}
#endif
void stuff(register int q) {
#if __cplusplus > 201402L
// expected-error@-2 {{ISO C++17 does not allow 'register' storage class specifier}}
#elif __cplusplus >= 201103L && !defined(NO_DEPRECATED_FLAGS)
// expected-warning@-4 {{'register' storage class specifier is deprecated}}
#endif
register int n;
#if __cplusplus > 201402L
// expected-error@-2 {{ISO C++17 does not allow 'register' storage class specifier}}
#elif __cplusplus >= 201103L && !defined(NO_DEPRECATED_FLAGS)
// expected-warning@-4 {{'register' storage class specifier is deprecated}}
#endif
register int m asm("rbx"); // no-warning
int k = to_int(n); // no-warning
bool b;
++b;
#if __cplusplus > 201402L
// expected-error@-2 {{ISO C++17 does not allow incrementing expression of type bool}}
#else
// expected-warning@-4 {{incrementing expression of type bool is deprecated}}
#endif
b++;
#if __cplusplus > 201402L
// expected-error@-2 {{ISO C++17 does not allow incrementing expression of type bool}}
#else
// expected-warning@-4 {{incrementing expression of type bool is deprecated}}
#endif
char *p = "foo";
#if __cplusplus < 201103L
// expected-warning@-2 {{conversion from string literal to 'char *' is deprecated}}
#else
// expected-warning@-4 {{ISO C++11 does not allow conversion from string literal to 'char *'}}
#endif
}
struct S { int n; void operator+(int); };
struct T : private S {
S::n;
#if __cplusplus < 201103L
// expected-warning@-2 {{access declarations are deprecated; use using declarations instead}}
#else
// expected-error@-4 {{ISO C++11 does not allow access declarations; use using declarations instead}}
#endif
S::operator+;
#if __cplusplus < 201103L
// expected-warning@-2 {{access declarations are deprecated; use using declarations instead}}
#else
// expected-error@-4 {{ISO C++11 does not allow access declarations; use using declarations instead}}
#endif
};
#if __cplusplus >= 201103L
namespace DeprecatedCopy {
struct Assign {
Assign &operator=(const Assign&); // expected-warning {{definition of implicit copy constructor for 'Assign' is deprecated because it has a user-provided copy assignment operator}}
};
Assign a1, a2(a1); // expected-note {{implicit copy constructor for 'DeprecatedCopy::Assign' first required here}}
struct Ctor {
Ctor();
Ctor(const Ctor&); // expected-warning {{definition of implicit copy assignment operator for 'Ctor' is deprecated because it has a user-provided copy constructor}}
};
Ctor b1, b2;
void f() { b1 = b2; } // expected-note {{implicit copy assignment operator for 'DeprecatedCopy::Ctor' first required here}}
struct Dtor {
~Dtor();
// expected-warning@-1 {{definition of implicit copy constructor for 'Dtor' is deprecated because it has a user-provided destructor}}
// expected-warning@-2 {{definition of implicit copy assignment operator for 'Dtor' is deprecated because it has a user-provided destructor}}
};
Dtor c1, c2(c1); // expected-note {{implicit copy constructor for 'DeprecatedCopy::Dtor' first required here}}
void g() { c1 = c2; } // expected-note {{implicit copy assignment operator for 'DeprecatedCopy::Dtor' first required here}}
struct DefaultedDtor {
~DefaultedDtor() = default; // expected-warning {{definition of implicit copy constructor for 'DefaultedDtor' is deprecated because it has a user-declared destructor}}
}; // expected-warning@-1 {{definition of implicit copy assignment operator for 'DefaultedDtor' is deprecated because it has a user-declared destructor}}
DefaultedDtor d1;
DefaultedDtor d2(d1); // expected-note {{in implicit copy constructor for 'DeprecatedCopy::DefaultedDtor' first required here}}
void h() { d1 = d2; } // expected-note {{in implicit copy assignment operator for 'DeprecatedCopy::DefaultedDtor' first required here}}
}
#endif
struct X {
friend int operator,(X, X);
void operator[](int);
};
void array_index_comma() {
int arr[123];
(void)arr[(void)1, 2];
(void)arr[X(), X()];
X()[(void)1, 2];
X()[X(), X()];
#if __cplusplus > 201703L
// expected-warning@-5 {{deprecated}}
// expected-warning@-5 {{deprecated}}
// expected-warning@-5 {{deprecated}}
// expected-warning@-5 {{deprecated}}
#endif
(void)arr[((void)1, 2)];
(void)arr[(X(), X())];
(void)((void)1,2)[arr];
(void)(X(), X())[arr];
X()[((void)1, 2)];
X()[(X(), X())];
}
namespace DeprecatedVolatile {
volatile int n = 1;
void use(int);
void f() {
// simple assignments are deprecated only if their value is used
n = 5; // ok
#if __cplusplus >= 201103L
decltype(n = 5) m = n; // ok expected-warning {{side effects}}
(void)noexcept(n = 5); // ok expected-warning {{side effects}}
#endif
(void)typeid(n = 5); // ok expected-warning {{side effects}}
(n = 5, 0); // ok
use(n = 5); // cxx20-warning {{use of result of assignment to object of volatile-qualified type 'volatile int' is deprecated}}
int q = n = 5; // cxx20-warning {{deprecated}}
q = n = 5; // cxx20-warning {{deprecated}}
#if __cplusplus >= 201103L
decltype(q = n = 5) m2 = q; // cxx20-warning {{deprecated}} expected-warning {{side effects}}
(void)noexcept(q = n = 5); // cxx20-warning {{deprecated}} expected-warning {{side effects}}
#endif
(void)sizeof(q = n = 5); // cxx20-warning {{deprecated}} expected-warning {{side effects}}
(void)typeid(use(n = 5)); // cxx20-warning {{deprecated}} expected-warning {{side effects}}
(void)__alignof(+(n = 5)); // cxx20-warning {{deprecated}} expected-warning {{side effects}}
// FIXME: These cases are technically deprecated because the parens are
// part of the operand, but we choose to not diagnose for now.
(void)sizeof(n = 5); // expected-warning {{side effects}}
(void)__alignof(n = 5); // expected-warning {{side effects}}
// Similarly here.
(n = 5);
volatile bool b = true;
if (b = true) {} // cxx20-warning {{deprecated}}
for (b = true;
b = true; // cxx20-warning {{deprecated}}
b = true) {}
for (volatile bool x = true;
volatile bool y = true; // ok despite volatile load from volatile initialization
) {}
// inc / dec / compound assignments are always deprecated
++n; // cxx20-warning {{increment of object of volatile-qualified type 'volatile int' is deprecated}}
--n; // cxx20-warning {{decrement of object of volatile-qualified type 'volatile int' is deprecated}}
n++; // cxx20-warning {{increment of object of volatile-qualified type 'volatile int' is deprecated}}
n--; // cxx20-warning {{decrement of object of volatile-qualified type 'volatile int' is deprecated}}
n += 5; // undeprecated as a DR in C++23
n *= 3; // undeprecated as a DR in C++23
n /= 2; // undeprecated as a DR in C++23
n %= 42; // undeprecated as a DR in C++23
n &= 2; // undeprecated as a DR in C++23
n |= 2; // undeprecated as a DR in C++23
n ^= 2; // undeprecated as a DR in C++23
(void)__is_trivially_assignable(volatile int&, int); // no warning
#if __cplusplus >= 201703L
struct X { int a, b; };
volatile auto [x, y] = X{1, 2}; // cxx20-warning {{volatile qualifier in structured binding declaration is deprecated}}
struct Y { volatile int a, b; };
auto [x2, y2] = Y{1, 2}; // ok
#endif
}
volatile int g( // cxx20-warning {{volatile-qualified return type 'volatile int' is deprecated}}
volatile int n, // cxx20-warning {{volatile-qualified parameter type 'volatile int' is deprecated}}
volatile int (*p)( // cxx20-warning {{volatile-qualified return type 'volatile int' is deprecated}}
volatile int m) // cxx20-warning {{volatile-qualified parameter type 'volatile int' is deprecated}}
);
#if __cplusplus >= 201103L
auto lambda = []( // cxx20-warning{{volatile-qualified return type 'volatile int' is deprecated}}
volatile int n) // cxx20-warning{{volatile-qualified parameter type 'volatile int' is deprecated}}
-> volatile int { return n; };
#endif
template<typename T> T f(T v); // cxx20-warning 2{{deprecated}}
int use_f = f<volatile int>(0); // FIXME: Missing "in instantiation of" note.
// OK, only the built-in operators are deprecated.
struct UDT {
UDT(volatile const UDT&);
UDT &operator=(const UDT&);
UDT &operator=(const UDT&) volatile;
UDT operator+=(const UDT&) volatile;
};
void h(UDT a) {
volatile UDT b = a;
volatile UDT c = b;
a = c = a;
b += a;
}
}
namespace ArithConv {
enum E { e } e2;
enum F { f };
bool b1 = e == e2;
bool b2 = e == f; // not-cxx20-warning-re {{different enumeration types ('ArithConv::E' and 'ArithConv::F'){{$}}}} cxx20-warning {{F') is deprecated}}
bool b3 = e == 0.0; // cxx20-warning {{comparison of enumeration type 'ArithConv::E' with floating-point type 'double' is deprecated}}
bool b4 = 0.0 == f; // cxx20-warning {{comparison of floating-point type 'double' with enumeration type 'ArithConv::F' is deprecated}}
int n1 = true ? e : f; // cxx20-warning {{conditional expression between different enumeration types ('ArithConv::E' and 'ArithConv::F') is deprecated}}
int n2 = true ? e : 0.0; // cxx20-warning {{conditional expression between enumeration type 'ArithConv::E' and floating-point type 'double' is deprecated}}
}
namespace ArrayComp {
int arr1[3], arr2[4];
bool b1 = arr1 == arr2; // expected-warning {{array comparison always evaluates to false}} cxx20-warning {{comparison between two arrays is deprecated}}
bool b2 = arr1 < arr2; // expected-warning {{array comparison always evaluates to a constant}} cxx20-warning {{comparison between two arrays is deprecated}}
__attribute__((weak)) int arr3[3];
bool b3 = arr1 == arr3; // cxx20-warning {{comparison between two arrays is deprecated}}
bool b4 = arr1 < arr3; // cxx20-warning {{comparison between two arrays is deprecated}}
#if __cplusplus > 201703L
bool b5 = arr1 <=> arr2; // cxx20-error {{invalid operands}}
#endif
int (&f())[3];
bool b6 = arr1 == f(); // cxx20-warning {{comparison between two arrays is deprecated}}
bool b7 = arr1 == +f();
}
# 1 "/usr/include/system-header.h" 1 3
void system_header_function(void) throw();
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