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, 0 insertions, 73 deletions

diff --git a/lib/libcxx/include/experimental/string b/lib/libcxx/include/experimental/string
deleted file mode 100644
index 4edbf98b5f..0000000000
--- a/lib/libcxx/include/experimental/string
+++ /dev/null
@@ -1,73 +0,0 @@
-// -*- C++ -*-
-//===----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP_EXPERIMENTAL_STRING
-#define _LIBCPP_EXPERIMENTAL_STRING
-
-/*
-    experimental/string synopsis
-
-// C++1z
-namespace std {
-namespace experimental {
-inline namespace fundamentals_v1 {
-namespace pmr {
-
-  // basic_string using polymorphic allocator in namespace pmr
-  template <class charT, class traits = char_traits<charT>>
-   using basic_string =
-     std::basic_string<charT, traits, polymorphic_allocator<charT>>;
-
-  // basic_string typedef names using polymorphic allocator in namespace
-  // std::experimental::pmr
-  typedef basic_string<char> string;
-  typedef basic_string<char16_t> u16string;
-  typedef basic_string<char32_t> u32string;
-  typedef basic_string<wchar_t> wstring;
-
-} // namespace pmr
-} // namespace fundamentals_v1
-} // namespace experimental
-} // namespace std
-
- */
-
-#include <__assert> // all public C++ headers provide the assertion handler
-#include <experimental/__config>
-#include <experimental/memory_resource>
-#include <string>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#  pragma GCC system_header
-#endif
-
-_LIBCPP_BEGIN_NAMESPACE_LFTS_PMR
-
-#ifndef _LIBCPP_CXX03_LANG
-
-_LIBCPP_SUPPRESS_DEPRECATED_PUSH
-
-template <class _CharT, class _Traits = char_traits<_CharT>>
-using basic_string =
-    _VSTD::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>;
-
-_LIBCPP_DEPCREATED_MEMORY_RESOURCE("string") typedef basic_string<char> string;
-_LIBCPP_DEPCREATED_MEMORY_RESOURCE("u16string") typedef basic_string<char16_t> u16string;
-_LIBCPP_DEPCREATED_MEMORY_RESOURCE("u32string") typedef basic_string<char32_t> u32string;
-#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
-_LIBCPP_DEPCREATED_MEMORY_RESOURCE("wstring") typedef basic_string<wchar_t> wstring;
-#endif
-
-_LIBCPP_SUPPRESS_DEPRECATED_POP
-
-#endif // _LIBCPP_CXX03_LANG
-
-_LIBCPP_END_NAMESPACE_LFTS_PMR
-
-#endif /* _LIBCPP_EXPERIMENTAL_STRING */