1 // RUN: %clang_cc1 -verify -fsyntax-only -std=c++11 -pedantic-errors -triple x86_64-linux-gnu %s 2 3 // Make sure we know these are legitimate commas and not typos for ';'. 4 namespace Commas { 5 int a, 6 b [[ ]], 7 c alignas(double); 8 } 9 10 struct S {}; 11 enum E { e, }; 12 13 auto f() -> struct S { 14 return S(); 15 } 16 auto g() -> enum E { 17 return E(); 18 } 19 20 class ExtraSemiAfterMemFn { 21 // Due to a peculiarity in the C++11 grammar, a deleted or defaulted function 22 // is permitted to be followed by either one or two semicolons. 23 void f() = delete // expected-error {{expected ';' after delete}} 24 void g() = delete; // ok 25 void h() = delete;; // ok 26 void i() = delete;;; // expected-error {{extra ';' after member function definition}} 27 }; 28 29 int *const const p = 0; // expected-error {{duplicate 'const' declaration specifier}} 30 const const int *q = 0; // expected-error {{duplicate 'const' declaration specifier}} 31 32 struct MultiCV { 33 void f() const const; // expected-error {{duplicate 'const' declaration specifier}} 34 }; 35 36 static_assert(something, ""); // expected-error {{undeclared identifier}} 37 38 // PR9903 39 struct SS { 40 typedef void d() = default; // expected-error {{function definition declared 'typedef'}} expected-error {{only special member functions may be defaulted}} 41 }; 42 43 using PR14855 = int S::; // expected-error {{expected ';' after alias declaration}} 44 45 // Ensure that 'this' has a const-qualified type in a trailing return type for 46 // a constexpr function. 47 struct ConstexprTrailingReturn { 48 int n; 49 constexpr auto f() const -> decltype((n)); 50 }; 51 constexpr const int &ConstexprTrailingReturn::f() const { return n; } 52 53 namespace TestIsValidAfterTypeSpecifier { 54 struct s {} v; 55 56 struct s 57 thread_local tl; 58 59 struct s 60 &r0 = v; 61 62 struct s 63 &&r1 = s(); 64 65 struct s 66 bitand r2 = v; 67 68 struct s 69 and r3 = s(); 70 71 enum E {}; 72 enum E 73 [[]] e; 74 75 } 76 77 namespace PR5066 { 78 using T = int (*f)(); // expected-error {{type-id cannot have a name}} 79 template<typename T> using U = int (*f)(); // expected-error {{type-id cannot have a name}} 80 auto f() -> int (*f)(); // expected-error {{type-id cannot have a name}} 81 auto g = []() -> int (*f)() {}; // expected-error {{type-id cannot have a name}} 82 } 83 84 namespace FinalOverride { 85 struct Base { 86 virtual void *f(); 87 virtual void *g(); 88 virtual void *h(); 89 virtual void *i(); 90 }; 91 struct Derived : Base { 92 virtual auto f() -> void *final; 93 virtual auto g() -> void *override; 94 virtual auto h() -> void *final override; 95 virtual auto i() -> void *override final; 96 }; 97 } 98 99 namespace UsingDeclAttrs { 100 using T __attribute__((aligned(1))) = int; 101 using T [[gnu::aligned(1)]] = int; 102 static_assert(alignof(T) == 1, ""); 103 104 using [[gnu::aligned(1)]] T = int; // expected-error {{an attribute list cannot appear here}} 105 using T = int [[gnu::aligned(1)]]; // expected-error {{'aligned' attribute cannot be applied to types}} 106 } 107 108 namespace DuplicateSpecifier { 109 constexpr constexpr int f(); // expected-warning {{duplicate 'constexpr' declaration specifier}} 110 constexpr int constexpr a = 0; // expected-warning {{duplicate 'constexpr' declaration specifier}} 111 112 struct A { 113 friend constexpr int constexpr friend f(); // expected-warning {{duplicate 'friend' declaration specifier}} \ 114 // expected-warning {{duplicate 'constexpr' declaration specifier}} 115 friend struct A friend; // expected-warning {{duplicate 'friend'}} expected-error {{'friend' must appear first}} 116 }; 117 } 118 119 struct Base { virtual void f() = 0; virtual void g() = 0; virtual void h() = 0; }; 120 struct MemberComponentOrder : Base { 121 void f() override __asm__("foobar") __attribute__(( )) {} 122 void g() __attribute__(( )) override; 123 void h() __attribute__(( )) override {} 124 }; 125
