Add [[clang::lifetimebound]] to numerous functions in libc++ include …

…headers

libcxx/include/__bit_reference

@@ -609,10 +609,10 @@ struct __bit_array {
         std::__construct_at(__word_ + __i, 0);
     }
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator begin() {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator begin() _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]), 0);
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator end() {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 iterator end() _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return iterator(pointer_traits<__storage_pointer>::pointer_to(__word_[0]) + __size_ / __bits_per_word,
                     static_cast<unsigned>(__size_ % __bits_per_word));
   }
@@ -905,7 +905,7 @@ public:
     return (__x.__seg_ - __y.__seg_) * __bits_per_word + __x.__ctz_ - __y.__ctz_;
   }
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 reference operator[](difference_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return *(*this + __n);
   }
 

libcxx/include/__chrono/tzdb_list.h

@@ -53,15 +53,15 @@ class _LIBCPP_AVAILABILITY_TZDB tzdb_list {
 
   using const_iterator = forward_list<tzdb>::const_iterator;
 
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const tzdb& front() const noexcept { return __front(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const tzdb& front() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __front(); }
 
-  _LIBCPP_HIDE_FROM_ABI const_iterator erase_after(const_iterator __p) { return __erase_after(__p); }
+  _LIBCPP_HIDE_FROM_ABI const_iterator erase_after(const_iterator __p) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __erase_after(__p); }
 
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator begin() const noexcept { return __begin(); }
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator end() const noexcept { return __end(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator begin() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __begin(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator end() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __end(); }
 
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const noexcept { return __cbegin(); }
-  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cend() const noexcept { return __cend(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __cbegin(); }
+  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI const_iterator cend() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __cend(); }
 
   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI __impl& __implementation() { return *__impl_; }
 

libcxx/include/__expected/expected.h

@@ -714,15 +714,15 @@ class expected : private __expected_base<_Tp, _Err> {
 
   template <class... _Args>
     requires is_nothrow_constructible_v<_Tp, _Args...>
-  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(_Args&&... __args) noexcept {
+  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(_Args&&... __args) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     this->__destroy();
     this->__construct(in_place, std::forward<_Args>(__args)...);
     return this->__val();
   }
 
   template <class _Up, class... _Args>
     requires is_nothrow_constructible_v<_Tp, initializer_list<_Up>&, _Args...>
-  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(initializer_list<_Up> __il, _Args&&... __args) noexcept {
+  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& emplace(initializer_list<_Up> __il, _Args&&... __args) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     this->__destroy();
     this->__construct(in_place, __il, std::forward<_Args>(__args)...);
     return this->__val();

libcxx/include/__filesystem/directory_iterator.h

@@ -124,9 +124,9 @@ operator!=(const directory_iterator& __lhs, const directory_iterator& __rhs) noe
 }
 
 // enable directory_iterator range-based for statements
-inline _LIBCPP_HIDE_FROM_ABI directory_iterator begin(directory_iterator __iter) noexcept { return __iter; }
+inline _LIBCPP_HIDE_FROM_ABI directory_iterator begin(directory_iterator __iter) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __iter; }
 
-inline _LIBCPP_HIDE_FROM_ABI directory_iterator end(directory_iterator) noexcept { return directory_iterator(); }
+inline _LIBCPP_HIDE_FROM_ABI directory_iterator end(directory_iterator) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return directory_iterator(); }
 
 _LIBCPP_AVAILABILITY_FILESYSTEM_LIBRARY_POP
 

libcxx/include/__filesystem/recursive_directory_iterator.h

@@ -133,11 +133,11 @@ operator!=(const recursive_directory_iterator& __lhs, const recursive_directory_
   return !(__lhs == __rhs);
 }
 // enable recursive_directory_iterator range-based for statements
-inline _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator begin(recursive_directory_iterator __iter) noexcept {
+inline _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator begin(recursive_directory_iterator __iter) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return __iter;
 }
 
-inline _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator end(recursive_directory_iterator) noexcept {
+inline _LIBCPP_HIDE_FROM_ABI recursive_directory_iterator end(recursive_directory_iterator) noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return recursive_directory_iterator();
 }
 

libcxx/include/__format/format_parse_context.h

@@ -41,8 +41,8 @@ class _LIBCPP_TEMPLATE_VIS basic_format_parse_context {
   basic_format_parse_context(const basic_format_parse_context&)            = delete;
   basic_format_parse_context& operator=(const basic_format_parse_context&) = delete;
 
-  _LIBCPP_HIDE_FROM_ABI constexpr const_iterator begin() const noexcept { return __begin_; }
-  _LIBCPP_HIDE_FROM_ABI constexpr const_iterator end() const noexcept { return __end_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr const_iterator begin() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __begin_; }
+  _LIBCPP_HIDE_FROM_ABI constexpr const_iterator end() const noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __end_; }
   _LIBCPP_HIDE_FROM_ABI constexpr void advance_to(const_iterator __it) { __begin_ = __it; }
 
   _LIBCPP_HIDE_FROM_ABI constexpr size_t next_arg_id() {

libcxx/include/__format/formatter_floating_point.h

@@ -183,8 +183,8 @@ class _LIBCPP_TEMPLATE_VIS __float_buffer {
   _LIBCPP_HIDE_FROM_ABI __float_buffer(const __float_buffer&)            = delete;
   _LIBCPP_HIDE_FROM_ABI __float_buffer& operator=(const __float_buffer&) = delete;
 
-  _LIBCPP_HIDE_FROM_ABI char* begin() const { return __begin_; }
-  _LIBCPP_HIDE_FROM_ABI char* end() const { return __begin_ + __size_; }
+  _LIBCPP_HIDE_FROM_ABI char* begin() const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __begin_; }
+  _LIBCPP_HIDE_FROM_ABI char* end() const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __begin_ + __size_; }
 
   _LIBCPP_HIDE_FROM_ABI int __precision() const { return __precision_; }
   _LIBCPP_HIDE_FROM_ABI int __num_trailing_zeros() const { return __num_trailing_zeros_; }

libcxx/include/__hash_table

@@ -891,10 +891,10 @@ public:
 
   _LIBCPP_HIDE_FROM_ABI size_type bucket_count() const _NOEXCEPT { return __bucket_list_.get_deleter().size(); }
 
-  _LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT;
-  _LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT;
-  _LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT;
-  _LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT;
+  _LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
+  _LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
+  _LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
+  _LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
 
   template <class _Key>
   _LIBCPP_HIDE_FROM_ABI size_type bucket(const _Key& __k) const {
@@ -904,15 +904,15 @@ public:
   }
 
   template <class _Key>
-  _LIBCPP_HIDE_FROM_ABI iterator find(const _Key& __x);
+  _LIBCPP_HIDE_FROM_ABI iterator find(const _Key& __x) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
   template <class _Key>
-  _LIBCPP_HIDE_FROM_ABI const_iterator find(const _Key& __x) const;
+  _LIBCPP_HIDE_FROM_ABI const_iterator find(const _Key& __x) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
 
   typedef __hash_node_destructor<__node_allocator> _Dp;
   typedef unique_ptr<__node, _Dp> __node_holder;
 
-  _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p);
-  _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last);
+  _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
+  _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND;
   template <class _Key>
   _LIBCPP_HIDE_FROM_ABI size_type __erase_unique(const _Key& __k);
   template <class _Key>
@@ -958,25 +958,25 @@ public:
     max_load_factor() = std::max(__mlf, load_factor());
   }
 
-  _LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) {
+  _LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __n < bucket_count(), "unordered container::begin(n) called with n >= bucket_count()");
     return local_iterator(__bucket_list_[__n], __n, bucket_count());
   }
 
-  _LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) {
+  _LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __n < bucket_count(), "unordered container::end(n) called with n >= bucket_count()");
     return local_iterator(nullptr, __n, bucket_count());
   }
 
-  _LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __n < bucket_count(), "unordered container::cbegin(n) called with n >= bucket_count()");
     return const_local_iterator(__bucket_list_[__n], __n, bucket_count());
   }
 
-  _LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __n < bucket_count(), "unordered container::cend(n) called with n >= bucket_count()");
     return const_local_iterator(nullptr, __n, bucket_count());

libcxx/include/__iterator/access.h

@@ -69,22 +69,22 @@ _LIBCPP_HIDE_FROM_ABI constexpr auto cend(const _Cp& __c) noexcept(noexcept(std:
 #else // defined(_LIBCPP_CXX03_LANG)
 
 template <class _Cp>
-_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator begin(_Cp& __c) {
+_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator begin(_Cp& __c) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return __c.begin();
 }
 
 template <class _Cp>
-_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator begin(const _Cp& __c) {
+_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator begin(const _Cp& __c) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return __c.begin();
 }
 
 template <class _Cp>
-_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator end(_Cp& __c) {
+_LIBCPP_HIDE_FROM_ABI typename _Cp::iterator end(_Cp& __c) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return __c.end();
 }
 
 template <class _Cp>
-_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator end(const _Cp& __c) {
+_LIBCPP_HIDE_FROM_ABI typename _Cp::const_iterator end(const _Cp& __c) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
   return __c.end();
 }
 

libcxx/include/__iterator/bounded_iter.h

@@ -118,7 +118,7 @@ struct __bounded_iter {
     return std::__to_address(__current_);
   }
 
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator[](difference_type __n) const _NOEXCEPT {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator[](difference_type __n) const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __n >= __begin_ - __current_, "__bounded_iter::operator[]: Attempt to index an iterator past the start");
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(

libcxx/include/__iterator/move_iterator.h

@@ -140,7 +140,7 @@ class _LIBCPP_TEMPLATE_VIS move_iterator
   _LIBCPP_HIDE_FROM_ABI constexpr _Iter base() && { return std::move(__current_); }
 
   _LIBCPP_HIDE_FROM_ABI constexpr reference operator*() const { return ranges::iter_move(__current_); }
-  _LIBCPP_HIDE_FROM_ABI constexpr reference operator[](difference_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI constexpr reference operator[](difference_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return ranges::iter_move(__current_ + __n);
   }
 
@@ -174,7 +174,7 @@ class _LIBCPP_TEMPLATE_VIS move_iterator
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 reference operator*() const {
     return static_cast<reference>(*__current_);
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 reference operator[](difference_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 reference operator[](difference_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return static_cast<reference>(__current_[__n]);
   }
 

libcxx/include/__iterator/reverse_iterator.h

@@ -178,7 +178,7 @@ class _LIBCPP_TEMPLATE_VIS reverse_iterator
     current += __n;
     return *this;
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 reference operator[](difference_type __n) const {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX17 reference operator[](difference_type __n) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return *(*this + __n);
   }
 

libcxx/include/__iterator/wrap_iter.h

@@ -87,7 +87,7 @@ class __wrap_iter {
     *this += -__n;
     return *this;
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator[](difference_type __n) const _NOEXCEPT {
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 reference operator[](difference_type __n) const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     return __i_[__n];
   }
 

libcxx/include/__mdspan/extents.h

@@ -78,14 +78,14 @@ struct __static_array {
 template <class _Tp, size_t _Size>
 struct __possibly_empty_array {
   _Tp __vals_[_Size];
-  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& operator[](size_t __index) { return __vals_[__index]; }
-  _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& operator[](size_t __index) const { return __vals_[__index]; }
+  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& operator[](size_t __index) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __vals_[__index]; }
+  _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& operator[](size_t __index) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __vals_[__index]; }
 };
 
 template <class _Tp>
 struct __possibly_empty_array<_Tp, 0> {
-  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& operator[](size_t) { __libcpp_unreachable(); }
-  _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& operator[](size_t) const { __libcpp_unreachable(); }
+  _LIBCPP_HIDE_FROM_ABI constexpr _Tp& operator[](size_t) _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { __libcpp_unreachable(); }
+  _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& operator[](size_t) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { __libcpp_unreachable(); }
 };
 
 // ------------------------------------------------------------------

libcxx/include/__mdspan/mdspan.h

@@ -186,7 +186,7 @@ class mdspan {
     requires((is_convertible_v<_OtherIndexTypes, index_type> && ...) &&
              (is_nothrow_constructible_v<index_type, _OtherIndexTypes> && ...) &&
              (sizeof...(_OtherIndexTypes) == rank()))
-  _LIBCPP_HIDE_FROM_ABI constexpr reference operator[](_OtherIndexTypes... __indices) const {
+  _LIBCPP_HIDE_FROM_ABI constexpr reference operator[](_OtherIndexTypes... __indices) const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     // Note the standard layouts would also check this, but user provided ones may not, so we
     // check the precondition here
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__mdspan_detail::__is_multidimensional_index_in(extents(), __indices...),

libcxx/include/__memory/unique_ptr.h

@@ -275,7 +275,7 @@ class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr {
     return *__ptr_;
   }
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 pointer operator->() const _NOEXCEPT { return __ptr_; }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 pointer get() const _NOEXCEPT { return __ptr_; }
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 pointer get() const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __ptr_; }
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 deleter_type& get_deleter() _NOEXCEPT { return __deleter_; }
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 const deleter_type& get_deleter() const _NOEXCEPT {
     return __deleter_;
@@ -585,7 +585,7 @@ class _LIBCPP_UNIQUE_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS unique_ptr<_Tp[], _Dp>
                                         "unique_ptr<T[]>::operator[](index): index out of range");
     return __ptr_[__i];
   }
-  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 pointer get() const _NOEXCEPT { return __ptr_; }
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 pointer get() const _NOEXCEPT _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __ptr_; }
 
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 deleter_type& get_deleter() _NOEXCEPT { return __deleter_; }
 

libcxx/include/__node_handle

@@ -170,7 +170,7 @@ template <class _NodeType, class _Derived>
 struct __set_node_handle_specifics {
   typedef typename _NodeType::__node_value_type value_type;
 
-  _LIBCPP_HIDE_FROM_ABI value_type& value() const { return static_cast<_Derived const*>(this)->__ptr_->__get_value(); }
+  _LIBCPP_HIDE_FROM_ABI value_type& value() const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return static_cast<_Derived const*>(this)->__ptr_->__get_value(); }
 };
 
 template <class _NodeType, class _Derived>

libcxx/include/__ranges/chunk_by_view.h

@@ -110,7 +110,7 @@ class _LIBCPP_ABI_LLVM18_NO_UNIQUE_ADDRESS chunk_by_view : public view_interface
 
   _LIBCPP_HIDE_FROM_ABI constexpr const _Pred& pred() const { return *__pred_; }
 
-  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() {
+  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     // Note: this duplicates a check in `optional` but provides a better error message.
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __pred_.__has_value(), "Trying to call begin() on a chunk_by_view that does not have a valid predicate.");

libcxx/include/__ranges/empty_view.h

@@ -29,8 +29,8 @@ template <class _Tp>
   requires is_object_v<_Tp>
 class empty_view : public view_interface<empty_view<_Tp>> {
 public:
-  _LIBCPP_HIDE_FROM_ABI static constexpr _Tp* begin() noexcept { return nullptr; }
-  _LIBCPP_HIDE_FROM_ABI static constexpr _Tp* end() noexcept { return nullptr; }
+  _LIBCPP_HIDE_FROM_ABI static constexpr _Tp* begin() noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return nullptr; }
+  _LIBCPP_HIDE_FROM_ABI static constexpr _Tp* end() noexcept _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return nullptr; }
   _LIBCPP_HIDE_FROM_ABI static constexpr _Tp* data() noexcept { return nullptr; }
   _LIBCPP_HIDE_FROM_ABI static constexpr size_t size() noexcept { return 0; }
   _LIBCPP_HIDE_FROM_ABI static constexpr bool empty() noexcept { return true; }

libcxx/include/__ranges/filter_view.h

@@ -85,7 +85,7 @@ class _LIBCPP_ABI_LLVM18_NO_UNIQUE_ADDRESS filter_view : public view_interface<f
 
   _LIBCPP_HIDE_FROM_ABI constexpr _Pred const& pred() const { return *__pred_; }
 
-  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() {
+  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND {
     // Note: this duplicates a check in `optional` but provides a better error message.
     _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
         __pred_.__has_value(), "Trying to call begin() on a filter_view that does not have a valid predicate.");

libcxx/include/__ranges/iota_view.h

@@ -329,7 +329,7 @@ class iota_view : public view_interface<iota_view<_Start, _BoundSentinel>> {
     requires(!same_as<_Start, _BoundSentinel> && !same_as<_BoundSentinel, unreachable_sentinel_t>)
       : iota_view(std::move(__first.__value_), std::move(__last.__bound_sentinel_)) {}
 
-  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() const { return __iterator{__value_}; }
+  _LIBCPP_HIDE_FROM_ABI constexpr __iterator begin() const _LIBCPP_LIFETIMEBOUND _LIBCPP_LIFETIMEBOUND { return __iterator{__value_}; }
 
   _LIBCPP_HIDE_FROM_ABI constexpr auto end() const {
     if constexpr (same_as<_BoundSentinel, unreachable_sentinel_t>)