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, 5 insertions, 11 deletions

diff --git a/lib/libcxx/src/any.cpp b/lib/libcxx/src/any.cpp
index 36f95c0ec4..b0ad695669 100644
--- a/lib/libcxx/src/any.cpp
+++ b/lib/libcxx/src/any.cpp
@@ -9,11 +9,8 @@
 #include <any>
 
 namespace std {
-const char* bad_any_cast::what() const noexcept {
-    return "bad any cast";
-}
-}
-
+const char* bad_any_cast::what() const noexcept { return "bad any cast"; }
+} // namespace std
 
 #include <experimental/__config>
 
@@ -21,14 +18,11 @@ const char* bad_any_cast::what() const noexcept {
 //  Even though it no longer exists in a header file
 _LIBCPP_BEGIN_NAMESPACE_LFTS
 
-class _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_AVAILABILITY_BAD_ANY_CAST bad_any_cast : public bad_cast
-{
+class _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_AVAILABILITY_BAD_ANY_CAST bad_any_cast : public bad_cast {
 public:
-    virtual const char* what() const noexcept;
+  virtual const char* what() const noexcept;
 };
 
-const char* bad_any_cast::what() const noexcept {
-    return "bad any cast";
-}
+const char* bad_any_cast::what() const noexcept { return "bad any cast"; }
 
 _LIBCPP_END_NAMESPACE_LFTS