libcxx: update to LLVM 18

release/18.x branch, commit 78b99c73ee4b96fe9ce0e294d4632326afb2db42

This adds the flag `-D_LIBCPP_HARDENING_MODE` which is determined based
on the Zig optimization mode.

This commit also fixes libunwind, libcxx, and libcxxabi to properly
report sub compilation errors.

1 files changed, 26 insertions, 45 deletions

diff --git a/lib/libcxx/include/initializer_list b/lib/libcxx/include/initializer_list
index d975722144..4c2a7925a5 100644
--- a/lib/libcxx/include/initializer_list
+++ b/lib/libcxx/include/initializer_list
@@ -50,65 +50,46 @@ template<class E> const E* end(initializer_list<E> il) noexcept; // constexpr in
 #  pragma GCC system_header
 #endif
 
-namespace std  // purposefully not versioned
+namespace std // purposefully not versioned
 {
 
 #ifndef _LIBCPP_CXX03_LANG
 
-template<class _Ep>
-class _LIBCPP_TEMPLATE_VIS initializer_list
-{
-    const _Ep* __begin_;
-    size_t    __size_;
-
-    _LIBCPP_INLINE_VISIBILITY
-    _LIBCPP_CONSTEXPR_SINCE_CXX14
-    initializer_list(const _Ep* __b, size_t __s) _NOEXCEPT
-        : __begin_(__b),
-          __size_(__s)
-        {}
+template <class _Ep>
+class _LIBCPP_TEMPLATE_VIS initializer_list {
+  const _Ep* __begin_;
+  size_t __size_;
+
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 initializer_list(const _Ep* __b, size_t __s) _NOEXCEPT
+      : __begin_(__b),
+        __size_(__s) {}
+
 public:
-    typedef _Ep        value_type;
-    typedef const _Ep& reference;
-    typedef const _Ep& const_reference;
-    typedef size_t    size_type;
+  typedef _Ep value_type;
+  typedef const _Ep& reference;
+  typedef const _Ep& const_reference;
+  typedef size_t size_type;
 
-    typedef const _Ep* iterator;
-    typedef const _Ep* const_iterator;
+  typedef const _Ep* iterator;
+  typedef const _Ep* const_iterator;
 
-    _LIBCPP_INLINE_VISIBILITY
-    _LIBCPP_CONSTEXPR_SINCE_CXX14
-    initializer_list() _NOEXCEPT : __begin_(nullptr), __size_(0) {}
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 initializer_list() _NOEXCEPT : __begin_(nullptr), __size_(0) {}
 
-    _LIBCPP_INLINE_VISIBILITY
-    _LIBCPP_CONSTEXPR_SINCE_CXX14
-    size_t    size()  const _NOEXCEPT {return __size_;}
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 size_t size() const _NOEXCEPT { return __size_; }
 
-    _LIBCPP_INLINE_VISIBILITY
-    _LIBCPP_CONSTEXPR_SINCE_CXX14
-    const _Ep* begin() const _NOEXCEPT {return __begin_;}
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Ep* begin() const _NOEXCEPT { return __begin_; }
 
-    _LIBCPP_INLINE_VISIBILITY
-    _LIBCPP_CONSTEXPR_SINCE_CXX14
-    const _Ep* end()   const _NOEXCEPT {return __begin_ + __size_;}
+  _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Ep* end() const _NOEXCEPT { return __begin_ + __size_; }
 };
 
-template<class _Ep>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_CONSTEXPR_SINCE_CXX14
-const _Ep*
-begin(initializer_list<_Ep> __il) _NOEXCEPT
-{
-    return __il.begin();
+template <class _Ep>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Ep* begin(initializer_list<_Ep> __il) _NOEXCEPT {
+  return __il.begin();
 }
 
-template<class _Ep>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_CONSTEXPR_SINCE_CXX14
-const _Ep*
-end(initializer_list<_Ep> __il) _NOEXCEPT
-{
-    return __il.end();
+template <class _Ep>
+inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Ep* end(initializer_list<_Ep> __il) _NOEXCEPT {
+  return __il.end();
 }
 
 #endif // !defined(_LIBCPP_CXX03_LANG)