Merge branch 'llvm18'

Upgrades the LLVM, Clang, and LLD dependencies to LLVM 18.x

Related to #16270

1 files changed, 19 insertions, 21 deletions

diff --git a/lib/libcxx/include/iterator b/lib/libcxx/include/iterator
index 42843781eb..2f92807423 100644
--- a/lib/libcxx/include/iterator
+++ b/lib/libcxx/include/iterator
@@ -634,25 +634,25 @@ public:
     bool failed() const noexcept;
 };
 
-template <class C> constexpr auto begin(C& c) -> decltype(c.begin());
-template <class C> constexpr auto begin(const C& c) -> decltype(c.begin());
-template <class C> constexpr auto end(C& c) -> decltype(c.end());
-template <class C> constexpr auto end(const C& c) -> decltype(c.end());
-template <class T, size_t N> constexpr T* begin(T (&array)[N]);
-template <class T, size_t N> constexpr T* end(T (&array)[N]);
-
-template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c));        // C++14
-template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c));            // C++14
-template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin());                 // C++14
-template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin());           // C++14
-template <class C> auto constexpr rend(C& c) -> decltype(c.rend());                     // C++14
-template <class C> constexpr auto rend(const C& c) -> decltype(c.rend());               // C++14
-template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14
-template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il);   // C++14
-template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]);      // C++14
-template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]);        // C++14
-template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c));      // C++14
-template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c));          // C++14
+template <class C> constexpr auto begin(C& c) -> decltype(c.begin());                   // constexpr since C++17
+template <class C> constexpr auto begin(const C& c) -> decltype(c.begin());             // constexpr since C++17
+template <class C> constexpr auto end(C& c) -> decltype(c.end());                       // constexpr since C++17
+template <class C> constexpr auto end(const C& c) -> decltype(c.end());                 // constexpr since C++17
+template <class T, size_t N> constexpr T* begin(T (&array)[N]) noexcept;
+template <class T, size_t N> constexpr T* end(T (&array)[N]) noexcept;
+
+template <class C> constexpr auto cbegin(const C& c) noexcept(see-below) -> decltype(std::begin(c)); // C++14
+template <class C> constexpr auto cend(const C& c) noexcept(see-below) -> decltype(std::end(c));     // C++14
+template <class C> constexpr auto rbegin(C& c) -> decltype(c.rbegin());                 // C++14, constexpr since C++17
+template <class C> constexpr auto rbegin(const C& c) -> decltype(c.rbegin());           // C++14, constexpr since C++17
+template <class C> constexpr auto rend(C& c) -> decltype(c.rend());                     // C++14, constexpr since C++17
+template <class C> constexpr auto rend(const C& c) -> decltype(c.rend());               // C++14, constexpr since C++17
+template <class E> constexpr reverse_iterator<const E*> rbegin(initializer_list<E> il); // C++14, constexpr since C++17
+template <class E> constexpr reverse_iterator<const E*> rend(initializer_list<E> il);   // C++14, constexpr since C++17
+template <class T, size_t N> constexpr reverse_iterator<T*> rbegin(T (&array)[N]);      // C++14, constexpr since C++17
+template <class T, size_t N> constexpr reverse_iterator<T*> rend(T (&array)[N]);        // C++14, constexpr since C++17
+template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c));      // C++14, constexpr since C++17
+template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c));          // C++14, constexpr since C++17
 
 // 24.8, container access:
 template <class C> constexpr auto size(const C& c) -> decltype(c.size());         // C++17
@@ -716,8 +716,6 @@ template <class E> constexpr const E* data(initializer_list<E> il) noexcept;
 #include <__iterator/wrap_iter.h>
 #include <__memory/addressof.h>
 #include <__memory/pointer_traits.h>
-#include <cstddef>
-#include <initializer_list>
 #include <version>
 
 // standard-mandated includes