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, 17 insertions, 12 deletions

diff --git a/lib/libcxx/include/__numeric/transform_reduce.h b/lib/libcxx/include/__numeric/transform_reduce.h
index 7e47f34d37..f1150510f0 100644
--- a/lib/libcxx/include/__numeric/transform_reduce.h
+++ b/lib/libcxx/include/__numeric/transform_reduce.h
@@ -18,37 +18,42 @@
 #  pragma GCC system_header
 #endif
 
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 #if _LIBCPP_STD_VER >= 17
 template <class _InputIterator, class _Tp, class _BinaryOp, class _UnaryOp>
-_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp transform_reduce(_InputIterator __first,
-                                                                             _InputIterator __last, _Tp __init,
-                                                                             _BinaryOp __b, _UnaryOp __u) {
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp
+transform_reduce(_InputIterator __first, _InputIterator __last, _Tp __init, _BinaryOp __b, _UnaryOp __u) {
   for (; __first != __last; ++__first)
     __init = __b(std::move(__init), __u(*__first));
   return __init;
 }
 
 template <class _InputIterator1, class _InputIterator2, class _Tp, class _BinaryOp1, class _BinaryOp2>
-_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp transform_reduce(_InputIterator1 __first1,
-                                                                             _InputIterator1 __last1,
-                                                                             _InputIterator2 __first2, _Tp __init,
-                                                                             _BinaryOp1 __b1, _BinaryOp2 __b2) {
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp transform_reduce(
+    _InputIterator1 __first1,
+    _InputIterator1 __last1,
+    _InputIterator2 __first2,
+    _Tp __init,
+    _BinaryOp1 __b1,
+    _BinaryOp2 __b2) {
   for (; __first1 != __last1; ++__first1, (void)++__first2)
     __init = __b1(std::move(__init), __b2(*__first1, *__first2));
   return __init;
 }
 
 template <class _InputIterator1, class _InputIterator2, class _Tp>
-_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp transform_reduce(_InputIterator1 __first1,
-                                                                             _InputIterator1 __last1,
-                                                                             _InputIterator2 __first2, _Tp __init) {
-  return _VSTD::transform_reduce(__first1, __last1, __first2, _VSTD::move(__init), _VSTD::plus<>(),
-                                 _VSTD::multiplies<>());
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _Tp
+transform_reduce(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _Tp __init) {
+  return std::transform_reduce(__first1, __last1, __first2, std::move(__init), std::plus<>(), std::multiplies<>());
 }
 #endif
 
 _LIBCPP_END_NAMESPACE_STD
 
+_LIBCPP_POP_MACROS
+
 #endif // _LIBCPP___NUMERIC_TRANSFORM_REDUCE_H