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Diffstat (limited to 'clang/test/SemaCXX/cxx98-compat.cpp')
| -rw-r--r-- | clang/test/SemaCXX/cxx98-compat.cpp | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/cxx98-compat.cpp b/clang/test/SemaCXX/cxx98-compat.cpp new file mode 100644 index 0000000..82a9dc8 --- /dev/null +++ b/clang/test/SemaCXX/cxx98-compat.cpp @@ -0,0 +1,305 @@ +// RUN: %clang_cc1 -fsyntax-only -std=c++11 -Wc++98-compat -verify %s +// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s + +namespace std { struct type_info; } + +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 {}; + +int alignas(8) with_alignas; // expected-warning {{'alignas' is incompatible with C++98}} +int with_attribute [[ ]]; // expected-warning {{attributes are 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}} +} + +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}} + return { 0 }; // expected-warning {{generalized initializer lists are incompatible with C++98}} +} +struct DelayedDefaultArgumentParseInitList { + void f(int i = {1}) { // expected-warning {{generalized initializer lists are incompatible with C++98}} + } +}; + +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}} + +void RangeFor() { + int xs[] = {1, 2, 3}; + for (int &a : xs) { // expected-warning {{range-based for loop 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}} + +// FIXME: Reintroduce this test if support for inheriting constructors is +// implemented. +#if 0 +struct InhCtorBase { + InhCtorBase(int); +}; +struct InhCtorDerived : InhCtorBase { + using InhCtorBase::InhCtorBase; // xpected-warning {{inheriting constructors are incompatible with C++98}} +}; +#endif + +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 {}; // expected-note {{here}} +} +template<> struct TemplateSpecOutOfScopeNs::S<char> {}; // expected-warning {{class template specialization of 'S' outside namespace 'TemplateSpecOutOfScopeNs' is incompatible with C++98}} + +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}} expected-note {{while substituting deduced template arguments into function template 'SFINAEAccessControl' [with T = PrivateMember]}} + return typename T::ImPrivate(); +} +int SFINAEAccessControl(...) { return 0; } +int CheckSFINAEAccessControl = SFINAEAccessControl(PrivateMember()); + +template<typename T> +struct FriendRedefinition { + friend void Friend() {} // expected-warning {{friend function 'Friend' would be implicitly redefined in C++98}} expected-note {{previous}} +}; +FriendRedefinition<int> FriendRedef1; +FriendRedefinition<char> FriendRedef2; // expected-note {{requested here}} + +namespace CopyCtorIssues { + struct Private { + Private(); + private: + Private(const Private&); // expected-note {{declared private here}} + }; + struct NoViable { + NoViable(); + NoViable(NoViable&); // expected-note {{not viable}} + }; + struct Ambiguous { + Ambiguous(); + Ambiguous(const Ambiguous &, int = 0); // expected-note {{candidate}} + Ambiguous(const Ambiguous &, double = 0); // expected-note {{candidate}} + }; + struct Deleted { + Private p; // expected-note {{implicitly deleted}} + }; + + const Private &a = Private(); // expected-warning {{copying variable of type 'CopyCtorIssues::Private' when binding a reference to a temporary would invoke an inaccessible constructor in C++98}} + const NoViable &b = NoViable(); // expected-warning {{copying variable of type 'CopyCtorIssues::NoViable' when binding a reference to a temporary would find no viable constructor in C++98}} + const Ambiguous &c = Ambiguous(); // expected-warning {{copying variable of type 'CopyCtorIssues::Ambiguous' when binding a reference to a temporary would find ambiguous constructors in C++98}} + const Deleted &d = Deleted(); // expected-warning {{copying variable of type 'CopyCtorIssues::Deleted' when binding a reference to a temporary would invoke a deleted constructor in C++98}} +} + +namespace UnionOrAnonStructMembers { + struct NonTrivCtor { + NonTrivCtor(); // expected-note 2{{user-declared constructor}} + }; + struct NonTrivCopy { + NonTrivCopy(const NonTrivCopy&); // expected-note 2{{user-declared copy constructor}} + }; + struct NonTrivDtor { + ~NonTrivDtor(); // expected-note 2{{user-declared destructor}} + }; + union BadUnion { + NonTrivCtor ntc; // expected-warning {{union member 'ntc' with a non-trivial 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 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 {{goto would jump into protected scope in C++98}} + TrivialButNonPOD tnp1; // expected-note {{jump bypasses initialization of non-POD variable}} + +DirectJump: + void *Table[] = {&&DirectJump, &&Later}; + goto *Table[n]; // expected-warning {{indirect goto might cross protected scopes in C++98}} + + TrivialButNonPOD tnp2; // expected-note {{jump bypasses initialization of non-POD variable}} +Later: // expected-note {{possible target of indirect goto}} + switch (n) { + TrivialButNonPOD tnp3; // expected-note {{jump bypasses initialization of non-POD variable}} + default: // expected-warning {{switch case would be in a protected scope in 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}} +} |