| // RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wc++98-compat -verify %s |
| // RUN: %clang_cc1 -fsyntax-only -std=c++14 -Wc++98-compat -verify %s -DCXX14COMPAT |
| |
| namespace std { |
| struct type_info; |
| using size_t = decltype(sizeof(0)); // expected-warning {{decltype}} expected-warning {{alias}} |
| template<typename T> struct initializer_list { |
| initializer_list(T*, size_t); |
| T *p; |
| size_t n; |
| T *begin(); |
| T *end(); |
| }; |
| } |
| |
| template<typename ...T> // expected-warning {{variadic templates are incompatible with C++98}} |
| class Variadic1 {}; |
| |
| template<template<typename> class ...T> // expected-warning {{variadic templates are incompatible with C++98}} |
| class Variadic2 {}; |
| |
| template<int ...I> // expected-warning {{variadic templates are incompatible with C++98}} |
| class Variadic3 {}; |
| |
| alignas(8) int with_alignas; // expected-warning {{'alignas' is incompatible with C++98}} |
| int with_attribute [[ ]]; // expected-warning {{C++11 attribute syntax is incompatible with C++98}} |
| |
| void Literals() { |
| (void)u8"str"; // expected-warning {{unicode literals are incompatible with C++98}} |
| (void)u"str"; // expected-warning {{unicode literals are incompatible with C++98}} |
| (void)U"str"; // expected-warning {{unicode literals are incompatible with C++98}} |
| (void)u'x'; // expected-warning {{unicode literals are incompatible with C++98}} |
| (void)U'x'; // expected-warning {{unicode literals are incompatible with C++98}} |
| |
| (void)u8R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} |
| (void)uR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} |
| (void)UR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} |
| (void)R"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} |
| (void)LR"X(str)X"; // expected-warning {{raw string literals are incompatible with C++98}} |
| } |
| |
| template<typename T> struct S {}; |
| namespace TemplateParsing { |
| S<::S<void> > s; // expected-warning {{'<::' is treated as digraph '<:' (aka '[') followed by ':' in C++98}} |
| S< ::S<void>> t; // expected-warning {{consecutive right angle brackets are incompatible with C++98 (use '> >')}} |
| } |
| |
| void Lambda() { |
| []{}(); // expected-warning {{lambda expressions are incompatible with C++98}} |
| // Don't warn about implicit "-> auto" here. |
| [](){}(); // expected-warning {{lambda expressions are incompatible with C++98}} |
| } |
| |
| struct Ctor { |
| Ctor(int, char); |
| Ctor(double, long); |
| }; |
| struct InitListCtor { |
| InitListCtor(std::initializer_list<bool>); |
| }; |
| |
| int InitList(int i = {}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} \ |
| // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} |
| (void)new int {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ |
| // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} |
| (void)int{}; // expected-warning {{generalized initializer lists are incompatible with C++98}} \ |
| // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} |
| int x { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} |
| S<int> s = {}; // ok, aggregate |
| s = {}; // expected-warning {{generalized initializer lists are incompatible with C++98}} |
| std::initializer_list<int> xs = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} |
| auto ys = { 1, 2, 3 }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} \ |
| // expected-warning {{'auto' type specifier is incompatible with C++98}} |
| Ctor c1 = { 1, 2 }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} |
| Ctor c2 = { 3.0, 4l }; // expected-warning {{constructor call from initializer list is incompatible with C++98}} |
| InitListCtor ilc = { true, false }; // expected-warning {{initialization of initializer_list object is incompatible with C++98}} |
| const int &r = { 0 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} |
| struct { int a; const int &r; } rr = { 0, {0} }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} |
| return { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} expected-warning {{scalar}} |
| } |
| struct DelayedDefaultArgumentParseInitList { |
| void f(int i = {1}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} expected-warning {{scalar}} |
| } |
| }; |
| |
| int operator"" _hello(const char *); // expected-warning {{literal operators are incompatible with C++98}} |
| |
| enum EnumFixed : int { // expected-warning {{enumeration types with a fixed underlying type are incompatible with C++98}} |
| }; |
| |
| enum class EnumScoped { // expected-warning {{scoped enumerations are incompatible with C++98}} |
| }; |
| |
| void Deleted() = delete; // expected-warning {{deleted function definitions are incompatible with C++98}} |
| struct Defaulted { |
| Defaulted() = default; // expected-warning {{defaulted function definitions are incompatible with C++98}} |
| }; |
| |
| int &&RvalueReference = 0; // expected-warning {{rvalue references are incompatible with C++98}} |
| struct RefQualifier { |
| void f() &; // expected-warning {{reference qualifiers on functions are incompatible with C++98}} |
| }; |
| |
| auto f() -> int; // expected-warning {{trailing return types are incompatible with C++98}} |
| #ifdef CXX14COMPAT |
| auto ff() { return 5; } // expected-warning {{'auto' type specifier is incompatible with C++98}} |
| // expected-warning@-1 {{return type deduction is incompatible with C++ standards before C++14}} |
| #endif |
| |
| void RangeFor() { |
| int xs[] = {1, 2, 3}; |
| for (int &a : xs) { // expected-warning {{range-based for loop is incompatible with C++98}} |
| } |
| for (auto &b : {1, 2, 3}) { |
| // expected-warning@-1 {{range-based for loop is incompatible with C++98}} |
| // expected-warning@-2 {{'auto' type specifier is incompatible with C++98}} |
| // expected-warning@-3 {{initialization of initializer_list object is incompatible with C++98}} |
| // expected-warning@-4 {{reference initialized from initializer list is incompatible with C++98}} |
| } |
| struct Agg { int a, b; } const &agg = { 1, 2 }; // expected-warning {{reference initialized from initializer list is incompatible with C++98}} |
| } |
| |
| struct InClassInit { |
| int n = 0; // expected-warning {{in-class initialization of non-static data members is incompatible with C++98}} |
| }; |
| |
| struct OverrideControlBase { |
| virtual void f(); |
| virtual void g(); |
| }; |
| struct OverrideControl final : OverrideControlBase { // expected-warning {{'final' keyword is incompatible with C++98}} |
| virtual void f() override; // expected-warning {{'override' keyword is incompatible with C++98}} |
| virtual void g() final; // expected-warning {{'final' keyword is incompatible with C++98}} |
| }; |
| |
| using AliasDecl = int; // expected-warning {{alias declarations are incompatible with C++98}} |
| template<typename T> using AliasTemplate = T; // expected-warning {{alias declarations are incompatible with C++98}} |
| |
| inline namespace InlineNS { // expected-warning {{inline namespaces are incompatible with C++98}} |
| } |
| |
| auto auto_deduction = 0; // expected-warning {{'auto' type specifier is incompatible with C++98}} |
| int *p = new auto(0); // expected-warning {{'auto' type specifier is incompatible with C++98}} |
| |
| const int align_of = alignof(int); // expected-warning {{alignof expressions are incompatible with C++98}} |
| char16_t c16 = 0; // expected-warning {{'char16_t' type specifier is incompatible with C++98}} |
| char32_t c32 = 0; // expected-warning {{'char32_t' type specifier is incompatible with C++98}} |
| constexpr int const_expr = 0; // expected-warning {{'constexpr' specifier is incompatible with C++98}} |
| decltype(const_expr) decl_type = 0; // expected-warning {{'decltype' type specifier is incompatible with C++98}} |
| __decltype(const_expr) decl_type2 = 0; // ok |
| void no_except() noexcept; // expected-warning {{noexcept specifications are incompatible with C++98}} |
| bool no_except_expr = noexcept(1 + 1); // expected-warning {{noexcept expressions are incompatible with C++98}} |
| void *null = nullptr; // expected-warning {{'nullptr' is incompatible with C++98}} |
| static_assert(true, "!"); // expected-warning {{static_assert declarations are incompatible with C++98}} |
| |
| struct InhCtorBase { |
| InhCtorBase(int); |
| }; |
| struct InhCtorDerived : InhCtorBase { |
| using InhCtorBase::InhCtorBase; // expected-warning {{inheriting constructors are incompatible with C++98}} |
| }; |
| |
| struct FriendMember { |
| static void MemberFn(); |
| friend void FriendMember::MemberFn(); // expected-warning {{friend declaration naming a member of the declaring class is incompatible with C++98}} |
| }; |
| |
| struct DelegCtor { |
| DelegCtor(int) : DelegCtor() {} // expected-warning {{delegating constructors are incompatible with C++98}} |
| DelegCtor(); |
| }; |
| |
| template<int n = 0> void DefaultFuncTemplateArg(); // expected-warning {{default template arguments for a function template are incompatible with C++98}} |
| |
| template<typename T> int TemplateFn(T) { return 0; } |
| void LocalTemplateArg() { |
| struct S {}; |
| TemplateFn(S()); // expected-warning {{local type 'S' as template argument is incompatible with C++98}} |
| } |
| struct {} obj_of_unnamed_type; // expected-note {{here}} |
| int UnnamedTemplateArg = TemplateFn(obj_of_unnamed_type); // expected-warning {{unnamed type as template argument is incompatible with C++98}} |
| |
| namespace RedundantParensInAddressTemplateParam { |
| int n; |
| template<int*p> struct S {}; |
| S<(&n)> s; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} |
| S<(((&n)))> t; // expected-warning {{redundant parentheses surrounding address non-type template argument are incompatible with C++98}} |
| } |
| |
| namespace TemplateSpecOutOfScopeNs { |
| template<typename T> struct S {}; |
| } |
| template<> struct TemplateSpecOutOfScopeNs::S<char> {}; |
| |
| struct Typename { |
| template<typename T> struct Inner {}; |
| }; |
| typename ::Typename TypenameOutsideTemplate(); // expected-warning {{use of 'typename' outside of a template is incompatible with C++98}} |
| Typename::template Inner<int> TemplateOutsideTemplate(); // expected-warning {{use of 'template' keyword outside of a template is incompatible with C++98}} |
| |
| struct TrivialButNonPOD { |
| int f(int); |
| private: |
| int k; |
| }; |
| void Ellipsis(int n, ...); |
| void TrivialButNonPODThroughEllipsis() { |
| Ellipsis(1, TrivialButNonPOD()); // expected-warning {{passing object of trivial but non-POD type 'TrivialButNonPOD' through variadic function is incompatible with C++98}} |
| } |
| |
| struct HasExplicitConversion { |
| explicit operator bool(); // expected-warning {{explicit conversion functions are incompatible with C++98}} |
| }; |
| |
| struct Struct {}; |
| enum Enum { enum_val = 0 }; |
| struct BadFriends { |
| friend enum ::Enum; // expected-warning {{befriending enumeration type 'enum ::Enum' is incompatible with C++98}} |
| friend int; // expected-warning {{non-class friend type 'int' is incompatible with C++98}} |
| friend Struct; // expected-warning {{befriending 'Struct' without 'struct' keyword is incompatible with C++98}} |
| }; |
| |
| int n = {}; // expected-warning {{scalar initialized from empty initializer list is incompatible with C++98}} |
| |
| class PrivateMember { |
| struct ImPrivate {}; |
| }; |
| template<typename T> typename T::ImPrivate SFINAEAccessControl(T t) { // expected-warning {{substitution failure due to access control is incompatible with C++98}} |
| return typename T::ImPrivate(); |
| } |
| int SFINAEAccessControl(...) { return 0; } |
| int CheckSFINAEAccessControl = SFINAEAccessControl(PrivateMember()); // expected-note {{while substituting deduced template arguments into function template 'SFINAEAccessControl' [with T = PrivateMember]}} |
| |
| namespace UnionOrAnonStructMembers { |
| struct NonTrivCtor { |
| NonTrivCtor(); // expected-note 2{{user-provided default constructor}} |
| }; |
| struct NonTrivCopy { |
| NonTrivCopy(const NonTrivCopy&); // expected-note 2{{user-provided copy constructor}} |
| }; |
| struct NonTrivDtor { |
| ~NonTrivDtor(); // expected-note 2{{user-provided destructor}} |
| }; |
| union BadUnion { |
| NonTrivCtor ntc; // expected-warning {{union member 'ntc' with a non-trivial default constructor is incompatible with C++98}} |
| NonTrivCopy ntcp; // expected-warning {{union member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} |
| NonTrivDtor ntd; // expected-warning {{union member 'ntd' with a non-trivial destructor is incompatible with C++98}} |
| }; |
| struct Wrap { |
| struct { |
| NonTrivCtor ntc; // expected-warning {{anonymous struct member 'ntc' with a non-trivial default constructor is incompatible with C++98}} |
| NonTrivCopy ntcp; // expected-warning {{anonymous struct member 'ntcp' with a non-trivial copy constructor is incompatible with C++98}} |
| NonTrivDtor ntd; // expected-warning {{anonymous struct member 'ntd' with a non-trivial destructor is incompatible with C++98}} |
| }; |
| }; |
| union WithStaticDataMember { |
| static constexpr double d = 0.0; // expected-warning {{static data member 'd' in union is incompatible with C++98}} expected-warning {{'constexpr' specifier is incompatible with C++98}} |
| static const int n = 0; // expected-warning {{static data member 'n' in union is incompatible with C++98}} |
| static int k; // expected-warning {{static data member 'k' in union is incompatible with C++98}} |
| }; |
| } |
| |
| int EnumNNS = Enum::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} |
| template<typename T> void EnumNNSFn() { |
| int k = T::enum_val; // expected-warning {{enumeration type in nested name specifier is incompatible with C++98}} |
| }; |
| template void EnumNNSFn<Enum>(); // expected-note {{in instantiation}} |
| |
| void JumpDiagnostics(int n) { |
| goto DirectJump; // expected-warning {{jump from this goto statement to its label is incompatible with C++98}} |
| TrivialButNonPOD tnp1; // expected-note {{jump bypasses initialization of non-POD variable}} |
| |
| DirectJump: |
| void *Table[] = {&&DirectJump, &&Later}; |
| goto *Table[n]; // expected-warning {{jump from this indirect goto statement to one of its possible targets is incompatible with C++98}} |
| |
| TrivialButNonPOD tnp2; // expected-note {{jump bypasses initialization of non-POD variable}} |
| Later: // expected-note {{possible target of indirect goto statement}} |
| switch (n) { |
| TrivialButNonPOD tnp3; // expected-note {{jump bypasses initialization of non-POD variable}} |
| default: // expected-warning {{jump from switch statement to this case label is incompatible with C++98}} |
| return; |
| } |
| } |
| |
| namespace UnevaluatedMemberAccess { |
| struct S { |
| int n; |
| int f() { return sizeof(S::n); } // ok |
| }; |
| int k = sizeof(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} |
| const std::type_info &ti = typeid(S::n); // expected-warning {{use of non-static data member 'n' in an unevaluated context is incompatible with C++98}} |
| } |
| |
| namespace LiteralUCNs { |
| char c1 = '\u001e'; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} |
| wchar_t c2 = L'\u0041'; // expected-warning {{specifying character 'A' with a universal character name is incompatible with C++98}} |
| const char *s1 = "foo\u0031"; // expected-warning {{specifying character '1' with a universal character name is incompatible with C++98}} |
| const wchar_t *s2 = L"bar\u0085"; // expected-warning {{universal character name referring to a control character is incompatible with C++98}} |
| } |
| |
| namespace NonTypeTemplateArgs { |
| template<typename T, T v> struct S {}; |
| const int k = 5; // expected-note {{here}} |
| static void f() {} // expected-note {{here}} |
| S<const int&, k> s1; // expected-warning {{non-type template argument referring to object 'k' with internal linkage is incompatible with C++98}} |
| S<void(&)(), f> s2; // expected-warning {{non-type template argument referring to function 'f' with internal linkage is incompatible with C++98}} |
| } |
| |
| namespace NullPointerTemplateArg { |
| struct A {}; |
| template<int*> struct X {}; |
| template<int A::*> struct Y {}; |
| X<(int*)0> x; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} |
| Y<(int A::*)0> y; // expected-warning {{use of null pointer as non-type template argument is incompatible with C++98}} |
| } |
| |
| namespace PR13480 { |
| struct basic_iterator { |
| basic_iterator(const basic_iterator &it) {} // expected-note {{because type 'PR13480::basic_iterator' has a user-provided copy constructor}} |
| basic_iterator(basic_iterator &it) {} |
| }; |
| |
| union test { |
| basic_iterator it; // expected-warning {{union member 'it' with a non-trivial copy constructor is incompatible with C++98}} |
| }; |
| } |
| |
| namespace AssignOpUnion { |
| struct a { |
| void operator=(const a &it) {} // expected-note {{because type 'AssignOpUnion::a' has a user-provided copy assignment operator}} |
| void operator=(a &it) {} |
| }; |
| |
| struct b { |
| void operator=(const b &it) {} // expected-note {{because type 'AssignOpUnion::b' has a user-provided copy assignment operator}} |
| }; |
| |
| union test1 { |
| a x; // expected-warning {{union member 'x' with a non-trivial copy assignment operator is incompatible with C++98}} |
| b y; // expected-warning {{union member 'y' with a non-trivial copy assignment operator is incompatible with C++98}} |
| }; |
| } |
| |
| namespace rdar11736429 { |
| struct X { // expected-note {{because type 'rdar11736429::X' has no default constructor}} |
| X(const X&) = delete; // expected-warning{{deleted function definitions are incompatible with C++98}} \ |
| // expected-note {{implicit default constructor suppressed by user-declared constructor}} |
| }; |
| |
| union S { |
| X x; // expected-warning{{union member 'x' with a non-trivial default constructor is incompatible with C++98}} |
| }; |
| } |
| |
| template<typename T> T var = T(10); |
| #ifdef CXX14COMPAT |
| // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++14}} |
| #else |
| // expected-warning@-4 {{variable templates are a C++14 extension}} |
| #endif |
| |
| // No diagnostic for specializations of variable templates; we will have |
| // diagnosed the primary template. |
| template<typename T> T* var<T*> = new T(); |
| template<> int var<int> = 10; |
| template char var<char>; |
| float fvar = var<float>; |
| |
| class A { |
| template<typename T> static T var = T(10); |
| #ifdef CXX14COMPAT |
| // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++14}} |
| #else |
| // expected-warning@-4 {{variable templates are a C++14 extension}} |
| #endif |
| |
| template<typename T> static T* var<T*> = new T(); |
| }; |
| |
| struct B { template<typename T> static T v; }; |
| #ifdef CXX14COMPAT |
| // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++14}} |
| #else |
| // expected-warning@-4 {{variable templates are a C++14 extension}} |
| #endif |
| |
| template<typename T> T B::v = T(); |
| #ifdef CXX14COMPAT |
| // expected-warning@-2 {{variable templates are incompatible with C++ standards before C++14}} |
| #else |
| // expected-warning@-4 {{variable templates are a C++14 extension}} |
| #endif |
| |
| template<typename T> T* B::v<T*> = new T(); |
| template<> int B::v<int> = 10; |
| template char B::v<char>; |
| float fsvar = B::v<float>; |
| |
| #ifdef CXX14COMPAT |
| int digit_seps = 123'456; // expected-warning {{digit separators are incompatible with C++ standards before C++14}} |
| #endif |