// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend %s -module-name Structs -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/structs.h
// RUN: %FileCheck %s < %t/structs.h

// RUN: %check-interop-cxx-header-in-clang(%t/structs.h -Wno-unused-private-field -Wno-unused-function)

// CHECK: namespace Structs SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Structs") {
// CHECK: namespace _impl {

// CHECK: namespace Structs SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Structs") {

// CHECK: class SWIFT_SYMBOL("s:7Structs18StructWithIntFieldV") StructWithIntField;
// CHECK-NEXT: } // end namespace

// CHECK: namespace swift SWIFT_PRIVATE_ATTR {
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
// CHECK-NEXT: template<>
// CHECK-NEXT: inline const constexpr bool isUsableInGenericContext<Structs::StructWithIntField> = true;
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: } // namespace swift

// CHECK: namespace Structs SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Structs") {

// CHECK:      namespace _impl {
// CHECK-EMPTY:
// CHECK-NEXT: class _impl_StructWithIntField;
// CHECK-EMPTY:
// CHECK-NEXT: // Type metadata accessor for StructWithIntField
// CHECK-NEXT: SWIFT_EXTERN swift::_impl::MetadataResponseTy $s7Structs18StructWithIntFieldVMa(swift::_impl::MetadataRequestTy) SWIFT_NOEXCEPT SWIFT_CALL;
// CHECK-EMPTY:
// CHECK-EMPTY:
// CHECK-NEXT: }

// CHECK:      class SWIFT_SYMBOL("s:7Structs18StructWithIntFieldV") StructWithIntField final {
// CHECK-NEXT: public:
// CHECK-NEXT:   SWIFT_INLINE_THUNK ~StructWithIntField() noexcept {
// CHECK:        }
// CHECK-NEXT:   SWIFT_INLINE_THUNK StructWithIntField(const StructWithIntField &other) noexcept {
// CHECK:        }
// CHECK:        SWIFT_INLINE_THUNK StructWithIntField &operator =(const StructWithIntField &other) noexcept {
// CHECK-NEXT:     auto metadata = _impl::$s7Structs18StructWithIntFieldVMa(0);
// CHECK-NEXT:     auto *vwTableAddr = reinterpret_cast<swift::_impl::ValueWitnessTable **>(metadata._0) - 1;
// CHECK-NEXT:   #ifdef __arm64e__
// CHECK-NEXT:     auto *vwTable = reinterpret_cast<swift::_impl::ValueWitnessTable *>(ptrauth_auth_data(reinterpret_cast<void *>(*vwTableAddr), ptrauth_key_process_independent_data, ptrauth_blend_discriminator(vwTableAddr, 11839)));
// CHECK-NEXT:   #else
// CHECK-NEXT:     auto *vwTable = *vwTableAddr;
// CHECK-NEXT:   #endif
// CHECK-NEXT:     vwTable->assignWithCopy(_getOpaquePointer(), const_cast<char *>(other._getOpaquePointer()), metadata._0);
// CHECK-NEXT:   return *this;
// CHECK-NEXT:  }
// CHECK-NEXT:   SWIFT_INLINE_THUNK StructWithIntField &operator =(StructWithIntField &&other) = delete;
// CHECK-NEXT:   noreturn]] SWIFT_INLINE_PRIVATE_HELPER StructWithIntField(StructWithIntField &&) noexcept {
// CHECK-NEXT:   swift::_impl::_fatalError_Cxx_move_of_Swift_value_type_not_supported_yet();
// CHECK-NEXT:   swift::_impl::_swift_stdlib_reportFatalError("swift", 5, "C++ does not support moving a Swift value yet", 45, 0);
// CHECK-NEXT:   abort();
// CHECK-NEXT:   }
// CHECK-NEXT: private:
// CHECK-NEXT:   SWIFT_INLINE_THUNK StructWithIntField() noexcept {}
// CHECK-NEXT:   static SWIFT_INLINE_THUNK StructWithIntField _make() noexcept { return StructWithIntField(); }
// CHECK-NEXT:   SWIFT_INLINE_THUNK const char * _Nonnull _getOpaquePointer() const noexcept { return _storage; }
// CHECK-NEXT:   SWIFT_INLINE_THUNK char * _Nonnull _getOpaquePointer() noexcept { return _storage; }
// CHECK-EMPTY:
// CHECK-NEXT:   alignas(8) char _storage[8];
// CHECK-NEXT:   friend class _impl::_impl_StructWithIntField;
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wreserved-identifier"
// CHECK-NEXT:  typedef char $s7Structs18StructWithIntFieldVD;
// CHECK-NEXT:  static inline constexpr $s7Structs18StructWithIntFieldVD __swift_mangled_name = 0;
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: };

// CHECK:      namespace _impl {
// CHECK-EMPTY:
// CHECK-NEXT: class _impl_StructWithIntField {
// CHECK-NEXT: public:
// CHECK-NEXT: static SWIFT_INLINE_THUNK char *  _Nonnull getOpaquePointer(StructWithIntField &object) { return object._getOpaquePointer(); }
// CHECK-NEXT: static SWIFT_INLINE_THUNK const char * _Nonnull getOpaquePointer(const StructWithIntField &object) { return object._getOpaquePointer(); }
// CHECK-NEXT: template<class T>
// CHECK-NEXT: static SWIFT_INLINE_PRIVATE_HELPER StructWithIntField returnNewValue(T callable) {
// CHECK-NEXT:   auto result = StructWithIntField::_make();
// CHECK-NEXT:   callable(result._getOpaquePointer());
// CHECK-NEXT:   return result;
// CHECK-NEXT:  }
// CHECK-NEXT: static SWIFT_INLINE_THUNK void initializeWithTake(char * _Nonnull destStorage, char * _Nonnull srcStorage) {
// CHECK-NEXT:   auto metadata = _impl::$s7Structs18StructWithIntFieldVMa(0);
// CHECK-NEXT:   auto *vwTableAddr = reinterpret_cast<swift::_impl::ValueWitnessTable **>(metadata._0) - 1;
// CHECK-NEXT: #ifdef __arm64e__
// CHECK-NEXT:   auto *vwTable = reinterpret_cast<swift::_impl::ValueWitnessTable *>(ptrauth_auth_data(reinterpret_cast<void *>(*vwTableAddr), ptrauth_key_process_independent_data, ptrauth_blend_discriminator(vwTableAddr, 11839)));
// CHECK-NEXT: #else
// CHECK-NEXT:   auto *vwTable = *vwTableAddr;
// CHECK-NEXT: #endif
// CHECK-NEXT:   vwTable->initializeWithTake(destStorage, srcStorage, metadata._0);
// CHECK-NEXT: }
// CHECK-NEXT: };
// CHECK-EMPTY:
// CHECK-NEXT: }
// CHECK-EMPTY:
// CHECK-NEXT: } // end namespace
// CHECK-EMPTY:
// CHECK-NEXT: namespace swift SWIFT_PRIVATE_ATTR {
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
// CHECK-NEXT: template<>
// CHECK-NEXT: struct TypeMetadataTrait<Structs::StructWithIntField>
// CHECK-NEXT: SWIFT_INLINE_PRIVATE_HELPER void * _Nonnull getTypeMetadata() {
// CHECK-NEXT:   return Structs::_impl::$s7Structs18StructWithIntFieldVMa(0)._0;
// CHECK-NEXT: }
// CHECK-NEXT: };
// CHECK-NEXT: namespace _impl{
// CHECK-NEXT: template<>
// CHECK-NEXT: inline const constexpr bool isValueType<Structs::StructWithIntField> = true;
// CHECK-NEXT: template<>
// CHECK-NEXT: struct implClassFor<Structs::StructWithIntField> { using type = Structs::_impl::_impl_StructWithIntField; };
// CHECK-NEXT: } // namespace
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: } // namespace swift
// CHECK-EMPTY:
// CHECK-NEXT: namespace Structs SWIFT_PRIVATE_ATTR SWIFT_SYMBOL_MODULE("Structs") {

public struct StructWithIntField {
  let field: Int64
}

// Special name gets renamed in C++.
// CHECK: class SWIFT_SYMBOL({{.*}}) register_ final {
// CHECK: alignas(8) char _storage[16];
// CHECK-NEXT:   friend class
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
// CHECK-NEXT: #pragma clang diagnostic push
// CHECK-NEXT: #pragma clang diagnostic ignored "-Wreserved-identifier"
// CHECK-NEXT:   typedef char $s7Structs8registerVD;
// CHECK-NEXT:   static inline constexpr $s7Structs8registerVD __swift_mangled_name = 0;
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: #pragma clang diagnostic pop
// CHECK-NEXT: };
public struct register {
  let field1: Int64
  let field2: Int64
}

// CHECK: } // namespace Structs