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, 12 insertions, 23 deletions

diff --git a/lib/libcxx/src/random_shuffle.cpp b/lib/libcxx/src/random_shuffle.cpp
index e9087a9701..3aaf71d846 100644
--- a/lib/libcxx/src/random_shuffle.cpp
+++ b/lib/libcxx/src/random_shuffle.cpp
@@ -23,40 +23,29 @@ static constinit __libcpp_mutex_t __rs_mut = _LIBCPP_MUTEX_INITIALIZER;
 #endif
 unsigned __rs_default::__c_ = 0;
 
-__rs_default::__rs_default()
-{
+__rs_default::__rs_default() {
 #ifndef _LIBCPP_HAS_NO_THREADS
-    __libcpp_mutex_lock(&__rs_mut);
+  __libcpp_mutex_lock(&__rs_mut);
 #endif
-    __c_ = 1;
+  __c_ = 1;
 }
 
-__rs_default::__rs_default(const __rs_default&)
-{
-    ++__c_;
-}
+__rs_default::__rs_default(const __rs_default&) { ++__c_; }
 
-__rs_default::~__rs_default()
-{
+__rs_default::~__rs_default() {
 #ifndef _LIBCPP_HAS_NO_THREADS
-    if (--__c_ == 0)
-       __libcpp_mutex_unlock(&__rs_mut);
+  if (--__c_ == 0)
+    __libcpp_mutex_unlock(&__rs_mut);
 #else
-    --__c_;
+  --__c_;
 #endif
 }
 
-__rs_default::result_type
-__rs_default::operator()()
-{
-    static mt19937 __rs_g;
-    return __rs_g();
+__rs_default::result_type __rs_default::operator()() {
+  static mt19937 __rs_g;
+  return __rs_g();
 }
 
-__rs_default
-__rs_get()
-{
-    return __rs_default();
-}
+__rs_default __rs_get() { return __rs_default(); }
 
 _LIBCPP_END_NAMESPACE_STD