TheRock/compiler/amd-llvm/clang/test/CXX/drs/cwg31xx.cpp

// RUN: %clang_cc1 -std=c++98 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,cxx98-14
// RUN: %clang_cc1 -std=c++11 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,cxx98-14,cxx11-17,since-cxx11
// RUN: %clang_cc1 -std=c++14 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,cxx98-14,cxx14-17,cxx11-17,since-cxx11,since-cxx14
// RUN: %clang_cc1 -std=c++17 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,cxx14-17,cxx11-17,since-cxx11,since-cxx14,since-cxx17
// RUN: %clang_cc1 -std=c++20 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20
// RUN: %clang_cc1 -std=c++23 %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20
// RUN: %clang_cc1 -std=c++2c %s -fexceptions -fcxx-exceptions -pedantic-errors -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20

// RUN: %clang_cc1 -std=c++98 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,cxx98-14
// RUN: %clang_cc1 -std=c++11 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,cxx98-14,cxx11-17,since-cxx11
// RUN: %clang_cc1 -std=c++14 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,cxx98-14,cxx14-17,cxx11-17,since-cxx11,since-cxx14
// RUN: %clang_cc1 -std=c++17 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,cxx14-17,cxx11-17,since-cxx11,since-cxx14,since-cxx17
// RUN: %clang_cc1 -std=c++20 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20
// RUN: %clang_cc1 -std=c++23 %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20
// RUN: %clang_cc1 -std=c++2c %s -fexceptions -fcxx-exceptions -pedantic-errors -fexperimental-new-constant-interpreter -verify-directives -verify=expected,since-cxx11,since-cxx14,since-cxx17,since-cxx20

// cxx98-14-no-diagnostics

namespace cwg3106 { // cwg3106: 2.7
#if __cplusplus >= 201103L
const char str[9] = R"(\u{1234})";
#endif
} // namespace cwg3106

namespace cwg3128 { // cwg3128: 2.7
#if __cplusplus >= 201103L
void f();
static_assert(noexcept(noexcept(f())), "");
#endif
} // namespace cwg3128

namespace cwg3135 { // cwg3135: 23
#if __cplusplus >= 201703L
struct Pinned {
  Pinned(const Pinned&) = delete; // #cwg3135-pinned-ctor
  Pinned& operator=(const Pinned&) = delete;
};

struct Source {
  operator Pinned&&() const;
  
  template<int>
  Source get() noexcept;
};
} // namespace cwg3135

namespace std {
  template<typename> struct tuple_size;
  template<int, typename> struct tuple_element;

  template<>
  struct tuple_size<cwg3135::Source> {
    static constexpr int value = 1;
  };
  
  template<>
  struct tuple_element<0, cwg3135::Source> { using type = cwg3135::Pinned; };
} // namespace std

namespace cwg3135 {
// CWG3135: `x` is of type Pinned rather than Pinned&&. 
// This leads to the deleted copy ctor being called.
auto [x] = Source{};
// since-cxx17-error@-1 {{initializing binding of type 'Pinned' invokes deleted constructor}}
//   since-cxx17-note@-2 {{in implicit initialization of binding declaration 'x'}}
//   since-cxx17-note@#cwg3135-pinned-ctor {{'Pinned' has been explicitly marked deleted here}}
#endif
} // namespace cwg3135

namespace cwg3151 { // cwg3151: 2.7
#if __cplusplus >= 201402L
auto lambda = []{};
struct S : decltype(lambda) {};
static_assert(!__is_final(decltype(lambda)), "");
#endif
} // namespace cwg3151

namespace cwg3156 { // cwg3156: 3.5
#if __cplusplus >= 202002L
struct C { // #cwg3156-C
  C(int) = delete; // #cwg3156-C-int
  C(){};
};

decltype([b = C(3)](){ return 4; }()) x;
// since-cxx20-error@-1 {{functional-style cast from 'int' to 'C' uses deleted function}}
//   since-cxx20-note@#cwg3156-C-int {{candidate constructor has been explicitly deleted}}
//   since-cxx20-note@#cwg3156-C {{candidate constructor (the implicit copy constructor)}}
//   since-cxx20-note@#cwg3156-C {{candidate constructor (the implicit move constructor)}}
#endif
} // namespace cwg3156

// cwg3172: na