diff --git a/.github/workflows/clang-tidy.yml b/.github/workflows/clang-tidy.yml
index 124b30723..5a8340de3 100644
--- a/.github/workflows/clang-tidy.yml
+++ b/.github/workflows/clang-tidy.yml
@@ -18,7 +18,7 @@ on:
   schedule:
     - cron: '0 16 * * *'
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   win-clang-tidy:
diff --git a/.github/workflows/compiler.yml b/.github/workflows/compiler.yml
index 9acfdbd6e..843427787 100644
--- a/.github/workflows/compiler.yml
+++ b/.github/workflows/compiler.yml
@@ -33,7 +33,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   win-compiler-compatible-2022:
diff --git a/.github/workflows/releases-android-binary.yml b/.github/workflows/releases-android-binary.yml
index 54eb61b4b..5b7a04e62 100644
--- a/.github/workflows/releases-android-binary.yml
+++ b/.github/workflows/releases-android-binary.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   android-binary-release:
diff --git a/.github/workflows/releases-deb.yml b/.github/workflows/releases-deb.yml
index fef421c49..cdb2228e3 100644
--- a/.github/workflows/releases-deb.yml
+++ b/.github/workflows/releases-deb.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
   DH_QUIET: 1
 jobs:
diff --git a/.github/workflows/releases-freebsd-binary.yml b/.github/workflows/releases-freebsd-binary.yml
index c832792e8..db61fece3 100644
--- a/.github/workflows/releases-freebsd-binary.yml
+++ b/.github/workflows/releases-freebsd-binary.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   freebsd-binary-release:
diff --git a/.github/workflows/releases-ios.yml b/.github/workflows/releases-ios.yml
index 7498f9657..bb99af6cd 100644
--- a/.github/workflows/releases-ios.yml
+++ b/.github/workflows/releases-ios.yml
@@ -21,7 +21,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   ios-simulator-release:
diff --git a/.github/workflows/releases-linux-binary.yml b/.github/workflows/releases-linux-binary.yml
index 8e4bab9d5..dfec9752b 100644
--- a/.github/workflows/releases-linux-binary.yml
+++ b/.github/workflows/releases-linux-binary.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   linux-binary-release:
diff --git a/.github/workflows/releases-macos.yml b/.github/workflows/releases-macos.yml
index 9740b2c13..393796633 100644
--- a/.github/workflows/releases-macos.yml
+++ b/.github/workflows/releases-macos.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   mac-release:
diff --git a/.github/workflows/releases-mingw-new.yml b/.github/workflows/releases-mingw-new.yml
index f69ab9cce..30214ed4a 100644
--- a/.github/workflows/releases-mingw-new.yml
+++ b/.github/workflows/releases-mingw-new.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   mingw64-release:
diff --git a/.github/workflows/releases-mingw.yml b/.github/workflows/releases-mingw.yml
index c06b19ef7..415a89764 100644
--- a/.github/workflows/releases-mingw.yml
+++ b/.github/workflows/releases-mingw.yml
@@ -18,7 +18,7 @@ on:
   schedule:
     - cron: '0 16 * * *'
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   mingw64-release:
diff --git a/.github/workflows/releases-openwrt-binary.yml b/.github/workflows/releases-openwrt-binary.yml
index b1dbb0290..d471f726a 100644
--- a/.github/workflows/releases-openwrt-binary.yml
+++ b/.github/workflows/releases-openwrt-binary.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   openwrt-binary-release:
diff --git a/.github/workflows/releases-rpm.yml b/.github/workflows/releases-rpm.yml
index 43faf17d2..e2e1222ad 100644
--- a/.github/workflows/releases-rpm.yml
+++ b/.github/workflows/releases-rpm.yml
@@ -35,7 +35,7 @@ concurrency:
   group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
   cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   docker_publish:
diff --git a/.github/workflows/releases-src.yml b/.github/workflows/releases-src.yml
index d738d3728..8fbaf5772 100644
--- a/.github/workflows/releases-src.yml
+++ b/.github/workflows/releases-src.yml
@@ -44,11 +44,6 @@ jobs:
           # unshallow must come first otherwise submodule may be get unshallowed
           git fetch --tags --unshallow
           git submodule update --init --depth 1
-      - name: Patch libcxx for gcc 14 support
-        run: |
-          cd third_party/libc++/trunk
-          patch -p1 < ../gcc14.patch
-          git clean -xfd
       - name: Patch libcxxabi for both of armel and armhf
         run: |
           cd third_party/libc++abi
diff --git a/.github/workflows/releases-windows.yml b/.github/workflows/releases-windows.yml
index edd62d45f..d8f8250a4 100644
--- a/.github/workflows/releases-windows.yml
+++ b/.github/workflows/releases-windows.yml
@@ -24,7 +24,7 @@ defaults:
   run:
     shell: cmd
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   windows-release:
diff --git a/.github/workflows/sanitizers.yml b/.github/workflows/sanitizers.yml
index e0f4993f2..9f376f091 100644
--- a/.github/workflows/sanitizers.yml
+++ b/.github/workflows/sanitizers.yml
@@ -18,7 +18,7 @@ on:
   schedule:
     - cron: '0 16 * * *'
 env:
-  CACHE_EPOCH: 127-4
+  CACHE_EPOCH: 128-1
   GOPROXY: direct
 jobs:
   sanitizer-linux:
diff --git a/CLANG_REVISION b/CLANG_REVISION
index 16d8aae09..5a3f08ccf 100644
--- a/CLANG_REVISION
+++ b/CLANG_REVISION
@@ -1 +1 @@
-llvmorg-19-init-10646-g084e2b53-57
\ No newline at end of file
+llvmorg-19-init-14561-gecea8371-2
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f6e84a13..1c56b38df 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -837,6 +837,9 @@ if(ASAN)
     add_link_options(-fsanitize=address -fsanitize-address-use-after-scope -fno-omit-frame-pointer)
   endif()
   add_definitions(-DADDRESS_SANITIZER)
+  if (NOT APPLE AND USE_LIBCXX)
+    add_definitions(-D_LIBCPP_INSTRUMENTED_WITH_ASAN)
+  endif()
   list(APPEND YASS_APP_FEATURES "asan")
 endif()
 
diff --git a/scripts/download-clang-prebuilt-binaries.py b/scripts/download-clang-prebuilt-binaries.py
index 8f1290b82..c8b81e707 100755
--- a/scripts/download-clang-prebuilt-binaries.py
+++ b/scripts/download-clang-prebuilt-binaries.py
@@ -9,10 +9,10 @@
 
 # mkdir -p third_party/llvm-build/Release+Asserts
 # CLANG_REVISION=$(< CLANG_REVISION)
-# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clang-$CLANG_REVISION.tgz | tar xzf - -C third_party/llvm-build/Release+Asserts
-# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clang-tidy-$CLANG_REVISION.tgz | tar xzf - -C third_party/llvm-build/Release+Asserts
-# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/libclang-$CLANG_REVISION.tgz | tar xzf - -C third_party/llvm-build/Release+Asserts
-# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clangd-$CLANG_REVISION.tgz | tar xzf - -C third_party/llvm-build/Release+Asserts
+# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clang-$CLANG_REVISION.tar.xz | tar xzf - -C third_party/llvm-build/Release+Asserts
+# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clang-tidy-$CLANG_REVISION.tar.xz | tar xzf - -C third_party/llvm-build/Release+Asserts
+# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/libclang-$CLANG_REVISION.tar.xz | tar xzf - -C third_party/llvm-build/Release+Asserts
+# curl https://commondatastorage.googleapis.com/chromium-browser-clang/$CLANG_ARCH/clangd-$CLANG_REVISION.tar.xz | tar xzf - -C third_party/llvm-build/Release+Asserts
 
 try:
   # For Python 3.0 and later
@@ -98,12 +98,12 @@ def main():
   mkdir_p('third_party/llvm-build/Release+Asserts')
   os.chdir('third_party/llvm-build/Release+Asserts')
 
-  download_url(f'https://commondatastorage.googleapis.com/chromium-browser-clang/{clang_arch}/clang-{clang_revision}.tgz',
-               f'clang-{clang_revision}-{clang_arch}.tgz')
-  download_url(f'https://commondatastorage.googleapis.com/chromium-browser-clang/{clang_arch}/clang-tidy-{clang_revision}.tgz',
-               f'clang-tidy-{clang_revision}-{clang_arch}.tgz')
-  extract_tarfile(f'clang-{clang_revision}-{clang_arch}.tgz')
-  extract_tarfile(f'clang-tidy-{clang_revision}-{clang_arch}.tgz')
+  download_url(f'https://commondatastorage.googleapis.com/chromium-browser-clang/{clang_arch}/clang-{clang_revision}.tar.xz',
+               f'clang-{clang_revision}-{clang_arch}.tar.xz')
+  download_url(f'https://commondatastorage.googleapis.com/chromium-browser-clang/{clang_arch}/clang-tidy-{clang_revision}.tar.xz',
+               f'clang-tidy-{clang_revision}-{clang_arch}.tar.xz')
+  extract_tarfile(f'clang-{clang_revision}-{clang_arch}.tar.xz')
+  extract_tarfile(f'clang-tidy-{clang_revision}-{clang_arch}.tar.xz')
 
   # create a shim to lld-link
   os.chdir('bin')
diff --git a/src/cli/cli_connection.cpp b/src/cli/cli_connection.cpp
index a8050e61f..bae618928 100644
--- a/src/cli/cli_connection.cpp
+++ b/src/cli/cli_connection.cpp
@@ -19,7 +19,7 @@
 #include <build/build_config.h>
 
 #ifdef HAVE_QUICHE
-#include <quiche/spdy/core/hpack/hpack_constants.h>
+#include <quiche/http2/hpack/hpack_constants.h>
 #endif
 
 static_assert(TLSEXT_MAXLEN_host_name == uint8_t(~0));
diff --git a/third_party/abseil-cpp b/third_party/abseil-cpp
index e7f3e3628..48b8d1be2 160000
--- a/third_party/abseil-cpp
+++ b/third_party/abseil-cpp
@@ -1 +1 @@
-Subproject commit e7f3e3628998c5f7b7c7d2a935eba50f9683c1dd
+Subproject commit 48b8d1be2d0f02617038259858e5b11bd0fe6cf2
diff --git a/third_party/boringssl/src b/third_party/boringssl/src
index 18c9dbe7a..eb7d5870f 160000
--- a/third_party/boringssl/src
+++ b/third_party/boringssl/src
@@ -1 +1 @@
-Subproject commit 18c9dbe7a7206a8fce6eb68a0d0a0e40a02ed75f
+Subproject commit eb7d5870f56f1840c2d8766ba9f641322ed1ba0b
diff --git a/third_party/googletest b/third_party/googletest
index a7f443b80..7321f950d 160000
--- a/third_party/googletest
+++ b/third_party/googletest
@@ -1 +1 @@
-Subproject commit a7f443b80b105f940225332ed3c31f2790092f47
+Subproject commit 7321f950dfe0d481b56b1c475e38b681ff34263f
diff --git a/third_party/libc++/CMakeLists.txt b/third_party/libc++/CMakeLists.txt
index 33fca9d98..08f2894af 100644
--- a/third_party/libc++/CMakeLists.txt
+++ b/third_party/libc++/CMakeLists.txt
@@ -59,7 +59,7 @@ foreach(CompilerFlag ${CompilerFlags})
   string(REPLACE "-stdlib=libc++" "" ${CompilerFlag} "${${CompilerFlag}}")
 endforeach()
 
-set(libcxx_CR "852bc6746f45add53fec19f3a29280e69e358d44")
+set(libcxx_CR "81d177a0a844f75749af92dd2c78a675ef179f54")
 # Fixed libc++ configuration macros are in
 # buildtools/third_party/libc++/__config_site. This config only has defines
 # that vary depending on gn args, and non-define flags.
diff --git a/third_party/libc++/__config_site b/third_party/libc++/__config_site
index 1ae42c3a0..179307575 100644
--- a/third_party/libc++/__config_site
+++ b/third_party/libc++/__config_site
@@ -1,6 +1,11 @@
 #ifndef _LIBCPP_CONFIG_SITE
 #define _LIBCPP_CONFIG_SITE
 
+// Dynamic libc++ configuration macros are in
+// build/config/libc++:runtime_library. This file only has defines
+// that are constant across platforms, or easily set via preprocessor checks.
+// Things that are set depending on GN args are not here.
+
 // We set a custom _LIBCPP_ABI_NAMESPACE for the following reasons:
 //
 // 1. When libcxx_is_shared is true, symbols from libc++.so are exported for all
@@ -12,6 +17,7 @@
 //    limit for PDBs (https://crbug.com/1327710#c5). To fix this, we set
 //    _LIBCPP_ABI_NAMESPACE to a shorter value.
 #define _LIBCPP_ABI_NAMESPACE __Cr
+
 #define _LIBCPP_ABI_VERSION 2
 
 /* #undef _LIBCPP_ABI_FORCE_ITANIUM */
@@ -39,14 +45,12 @@
 // TODO(thakis): Is this right?
 /* #undef _LIBCPP_HAS_NO_TIME_ZONE_DATABASE */
 
-#define _LIBCPP_INSTRUMENTED_WITH_ASAN
-
 // PSTL backends
-/* #undef _LIBCPP_PSTL_CPU_BACKEND_SERIAL */
+/* #undef _LIBCPP_PSTL_BACKEND_SERIAL */
 #if defined(__APPLE__)
-#define _LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH
+#define _LIBCPP_PSTL_BACKEND_LIBDISPATCH
 #else
-#define _LIBCPP_PSTL_CPU_BACKEND_THREAD
+#define _LIBCPP_PSTL_BACKEND_STD_THREAD
 #endif
 
 // Settings below aren't part of __config_site upstream.
@@ -71,7 +75,7 @@
 // termination function on Apple platforms.
 #define _LIBCPP_VERBOSE_ABORT(...) ::std::__libcpp_verbose_abort(__VA_ARGS__)
 
-// TODO(crbug.com/1455923) Link against compiler-rt's builtins library to
+// TODO(crbug.com/40272953) Link against compiler-rt's builtins library to
 // enable 128-arithmetic.
 #if defined(_WIN32)
 #define _LIBCPP_HAS_NO_INT128
diff --git a/third_party/libc++/gcc14.patch b/third_party/libc++/gcc14.patch
deleted file mode 100644
index c9e2f0a5c..000000000
--- a/third_party/libc++/gcc14.patch
+++ /dev/null
@@ -1,167 +0,0 @@
-From 93dc957bd07760c5d810785707bf6bea2b18676e Mon Sep 17 00:00:00 2001
-From: Nikolas Klauser <nikolasklauser@berlin.de>
-Date: Sat, 1 Jun 2024 12:20:41 +0200
-Subject: [PATCH]  [libc++] Fix failures with GCC 14 (#92663)
-
-Fixes #91831
-
-NOKEYCHECK=True
-GitOrigin-RevId: cb7a03b41fff563c0cbb5145eed09f9b17edf9e2
----
- include/__string/constexpr_c_functions.h                     | 2 +-
- include/__type_traits/remove_pointer.h                       | 5 +++++
- include/bitset                                               | 3 +++
- .../time.zone/time.zone.leap/nonmembers/comparison.pass.cpp  | 4 ++--
- .../expected/expected.expected/monadic/transform.pass.cpp    | 2 +-
- .../expected.expected/monadic/transform_error.pass.cpp       | 2 +-
- .../expected/expected.void/monadic/transform_error.pass.cpp  | 2 +-
- .../format.formatter.spec/formatter.char_array.pass.cpp      | 2 +-
- .../utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp | 3 +++
- .../variant/variant.visit.member/visit_return_type.pass.cpp  | 3 +++
- 10 files changed, 21 insertions(+), 7 deletions(-)
-
-diff --git a/include/__string/constexpr_c_functions.h b/include/__string/constexpr_c_functions.h
-index 4da8542e3..a978f816f 100644
---- a/include/__string/constexpr_c_functions.h
-+++ b/include/__string/constexpr_c_functions.h
-@@ -123,7 +123,7 @@ __constexpr_memcmp_equal(const _Tp* __lhs, const _Up* __rhs, __element_count __n
-     }
-     return true;
-   } else {
--    return __builtin_memcmp(__lhs, __rhs, __count * sizeof(_Tp)) == 0;
-+    return ::__builtin_memcmp(__lhs, __rhs, __count * sizeof(_Tp)) == 0;
-   }
- }
- 
-diff --git a/include/__type_traits/remove_pointer.h b/include/__type_traits/remove_pointer.h
-index 54390a193..1048f6705 100644
---- a/include/__type_traits/remove_pointer.h
-+++ b/include/__type_traits/remove_pointer.h
-@@ -23,8 +23,13 @@ struct remove_pointer {
-   using type _LIBCPP_NODEBUG = __remove_pointer(_Tp);
- };
- 
-+#  ifdef _LIBCPP_COMPILER_GCC
-+template <class _Tp>
-+using __remove_pointer_t = typename remove_pointer<_Tp>::type;
-+#  else
- template <class _Tp>
- using __remove_pointer_t = __remove_pointer(_Tp);
-+#  endif
- #else
- // clang-format off
- template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer                      {typedef _LIBCPP_NODEBUG _Tp type;};
-diff --git a/include/bitset b/include/bitset
-index 8818ab656..6bd7bfe58 100644
---- a/include/bitset
-+++ b/include/bitset
-@@ -375,8 +375,11 @@ template <size_t _N_words, size_t _Size>
- _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 unsigned long long
- __bitset<_N_words, _Size>::to_ullong(true_type, true_type) const {
-   unsigned long long __r = __first_[0];
-+  _LIBCPP_DIAGNOSTIC_PUSH
-+  _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wshift-count-overflow")
-   for (size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i)
-     __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT);
-+  _LIBCPP_DIAGNOSTIC_POP
-   return __r;
- }
- 
-diff --git a/test/std/time/time.zone/time.zone.leap/nonmembers/comparison.pass.cpp b/test/std/time/time.zone/time.zone.leap/nonmembers/comparison.pass.cpp
-index 448cd88d1..ccff0248e 100644
---- a/test/std/time/time.zone/time.zone.leap/nonmembers/comparison.pass.cpp
-+++ b/test/std/time/time.zone/time.zone.leap/nonmembers/comparison.pass.cpp
-@@ -9,8 +9,8 @@
- // UNSUPPORTED: c++03, c++11, c++14, c++17
- // UNSUPPORTED: no-filesystem, no-localization, no-tzdb
- 
--// TODO TZDB test whether this can be enabled with gcc 14.
--// UNSUPPORTED: gcc-13
-+// TODO TZDB investigate why this fails with GCC
-+// UNSUPPORTED: gcc-13, gcc-14
- 
- // XFAIL: libcpp-has-no-experimental-tzdb
- // XFAIL: availability-tzdb-missing
-diff --git a/test/std/utilities/expected/expected.expected/monadic/transform.pass.cpp b/test/std/utilities/expected/expected.expected/monadic/transform.pass.cpp
-index d38a46f04..aa7106fb9 100644
---- a/test/std/utilities/expected/expected.expected/monadic/transform.pass.cpp
-+++ b/test/std/utilities/expected/expected.expected/monadic/transform.pass.cpp
-@@ -10,7 +10,7 @@
- 
- // GCC has a issue for `Guaranteed copy elision for potentially-overlapping non-static data members`,
- // please refer to: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108333
--// XFAIL: gcc-13
-+// XFAIL: gcc-13, gcc-14
- 
- // <expected>
- 
-diff --git a/test/std/utilities/expected/expected.expected/monadic/transform_error.pass.cpp b/test/std/utilities/expected/expected.expected/monadic/transform_error.pass.cpp
-index ec55f637f..ae9feccb5 100644
---- a/test/std/utilities/expected/expected.expected/monadic/transform_error.pass.cpp
-+++ b/test/std/utilities/expected/expected.expected/monadic/transform_error.pass.cpp
-@@ -10,7 +10,7 @@
- 
- // GCC has a issue for `Guaranteed copy elision for potentially-overlapping non-static data members`,
- // please refer to: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108333.
--// XFAIL: gcc-13
-+// XFAIL: gcc-13, gcc-14
- 
- // <expected>
- 
-diff --git a/test/std/utilities/expected/expected.void/monadic/transform_error.pass.cpp b/test/std/utilities/expected/expected.void/monadic/transform_error.pass.cpp
-index cd6e5a503..f70bddbed 100644
---- a/test/std/utilities/expected/expected.void/monadic/transform_error.pass.cpp
-+++ b/test/std/utilities/expected/expected.void/monadic/transform_error.pass.cpp
-@@ -10,7 +10,7 @@
- 
- // GCC has a issue for `Guaranteed copy elision for potentially-overlapping non-static data members`,
- // please refer to: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108333
--// XFAIL: gcc-13
-+// XFAIL: gcc-13, gcc-14
- 
- // <expected>
- 
-diff --git a/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp b/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp
-index b0ee399a1..cad13c1ef 100644
---- a/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp
-+++ b/test/std/utilities/format/format.formatter/format.formatter.spec/formatter.char_array.pass.cpp
-@@ -7,7 +7,7 @@
- 
- // UNSUPPORTED: c++03, c++11, c++14, c++17
- // TODO FMT __builtin_memcpy isn't constexpr in GCC
--// UNSUPPORTED: gcc-13
-+// UNSUPPORTED: gcc-13, gcc-14
- 
- // <format>
- 
-diff --git a/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp b/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp
-index c9e7bb6a5..0b40ac9ff 100644
---- a/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp
-+++ b/test/std/utilities/tuple/tuple.tuple/tuple.cnstr/PR31384.pass.cpp
-@@ -8,6 +8,9 @@
- 
- // UNSUPPORTED: c++03
- 
-+// FIXME: Why does this start to fail with GCC 14?
-+// XFAIL: gcc-14
-+
- // See https://llvm.org/PR31384.
- 
- #include <tuple>
-diff --git a/test/std/utilities/variant/variant.visit.member/visit_return_type.pass.cpp b/test/std/utilities/variant/variant.visit.member/visit_return_type.pass.cpp
-index 2c1cbb06e..7429cdf80 100644
---- a/test/std/utilities/variant/variant.visit.member/visit_return_type.pass.cpp
-+++ b/test/std/utilities/variant/variant.visit.member/visit_return_type.pass.cpp
-@@ -34,6 +34,9 @@ struct overloaded : Ts... {
-   using Ts::operator()...;
- };
- 
-+template <class... Ts>
-+overloaded(Ts...) -> overloaded<Ts...>;
-+
- void test_overload_ambiguity() {
-   using V = std::variant<float, long, std::string>;
-   using namespace std::string_literals;
--- 
-2.45.2
-
diff --git a/third_party/libc++/trunk b/third_party/libc++/trunk
index 852bc6746..81d177a0a 160000
--- a/third_party/libc++/trunk
+++ b/third_party/libc++/trunk
@@ -1 +1 @@
-Subproject commit 852bc6746f45add53fec19f3a29280e69e358d44
+Subproject commit 81d177a0a844f75749af92dd2c78a675ef179f54
diff --git a/third_party/libc++abi/trunk b/third_party/libc++abi/trunk
index 43dd5b4bf..a3c7d3e2f 160000
--- a/third_party/libc++abi/trunk
+++ b/third_party/libc++abi/trunk
@@ -1 +1 @@
-Subproject commit 43dd5b4bf62e8593461dce9a95e3d43fdcd0b9f2
+Subproject commit a3c7d3e2f3e1e724b4651891b1a71257cbd88acc
diff --git a/third_party/libunwind/trunk b/third_party/libunwind/trunk
index c8f1d8199..d09db732f 160000
--- a/third_party/libunwind/trunk
+++ b/third_party/libunwind/trunk
@@ -1 +1 @@
-Subproject commit c8f1d81998280ae2ea0e76ddb60aae6e1b4b860e
+Subproject commit d09db732ff68f40fd3581306c650b17ea1955b4e
diff --git a/third_party/quiche/CMakeLists.txt b/third_party/quiche/CMakeLists.txt
index 26dc61008..a2a9ee156 100644
--- a/third_party/quiche/CMakeLists.txt
+++ b/third_party/quiche/CMakeLists.txt
@@ -69,6 +69,7 @@ set(quiche_SRCS
   src/quiche/common/quiche_data_writer.h
   src/quiche/common/quiche_endian.h
   src/quiche/common/quiche_feature_flags_list.h
+  src/quiche/common/quiche_intrusive_list.h
   src/quiche/common/quiche_ip_address.cc
   src/quiche/common/quiche_ip_address.h
   src/quiche/common/quiche_ip_address_family.cc
@@ -112,8 +113,31 @@ set(quiche_SRCS
   src/quiche/http2/adapter/oghttp2_util.h
   src/quiche/http2/adapter/window_manager.cc
   src/quiche/http2/adapter/window_manager.h
+  src/quiche/http2/core/array_output_buffer.cc
+  src/quiche/http2/core/array_output_buffer.h
+  src/quiche/http2/core/header_byte_listener_interface.h
+  src/quiche/http2/core/http2_frame_decoder_adapter.cc
+  src/quiche/http2/core/http2_frame_decoder_adapter.h
+  src/quiche/http2/core/http2_header_block_hpack_listener.h
   src/quiche/http2/core/http2_trace_logging.cc
   src/quiche/http2/core/http2_trace_logging.h
+  src/quiche/http2/core/no_op_headers_handler.h
+  src/quiche/http2/core/priority_write_scheduler.h
+  src/quiche/http2/core/recording_headers_handler.cc
+  src/quiche/http2/core/recording_headers_handler.h
+  src/quiche/http2/core/spdy_alt_svc_wire_format.cc
+  src/quiche/http2/core/spdy_alt_svc_wire_format.h
+  src/quiche/http2/core/spdy_bitmasks.h
+  src/quiche/http2/core/spdy_frame_builder.cc
+  src/quiche/http2/core/spdy_frame_builder.h
+  src/quiche/http2/core/spdy_framer.cc
+  src/quiche/http2/core/spdy_framer.h
+  src/quiche/http2/core/spdy_headers_handler_interface.h
+  src/quiche/http2/core/spdy_no_op_visitor.cc
+  src/quiche/http2/core/spdy_no_op_visitor.h
+  src/quiche/http2/core/spdy_protocol.cc
+  src/quiche/http2/core/spdy_protocol.h
+  src/quiche/http2/core/zero_copy_output_buffer.h
   src/quiche/http2/decoder/decode_buffer.cc
   src/quiche/http2/decoder/decode_buffer.h
   src/quiche/http2/decoder/decode_http2_structures.cc
@@ -182,6 +206,18 @@ set(quiche_SRCS
   src/quiche/http2/hpack/decoder/hpack_whole_entry_buffer.h
   src/quiche/http2/hpack/decoder/hpack_whole_entry_listener.cc
   src/quiche/http2/hpack/decoder/hpack_whole_entry_listener.h
+  src/quiche/http2/hpack/hpack_constants.cc
+  src/quiche/http2/hpack/hpack_constants.h
+  src/quiche/http2/hpack/hpack_encoder.cc
+  src/quiche/http2/hpack/hpack_encoder.h
+  src/quiche/http2/hpack/hpack_entry.cc
+  src/quiche/http2/hpack/hpack_entry.h
+  src/quiche/http2/hpack/hpack_header_table.cc
+  src/quiche/http2/hpack/hpack_header_table.h
+  src/quiche/http2/hpack/hpack_output_stream.cc
+  src/quiche/http2/hpack/hpack_output_stream.h
+  src/quiche/http2/hpack/hpack_static_table.cc
+  src/quiche/http2/hpack/hpack_static_table.h
   src/quiche/http2/hpack/hpack_static_table_entries.inc
   src/quiche/http2/hpack/http2_hpack_constants.cc
   src/quiche/http2/hpack/http2_hpack_constants.h
@@ -209,39 +245,17 @@ set(quiche_SRCS
   src/quiche/oblivious_http/oblivious_http_client.h
   src/quiche/oblivious_http/oblivious_http_gateway.cc
   src/quiche/oblivious_http/oblivious_http_gateway.h
-  src/quiche/spdy/core/array_output_buffer.cc
-  src/quiche/spdy/core/array_output_buffer.h
-  src/quiche/spdy/core/hpack/hpack_constants.cc
-  src/quiche/spdy/core/hpack/hpack_constants.h
   src/quiche/spdy/core/hpack/hpack_decoder_adapter.cc
   src/quiche/spdy/core/hpack/hpack_decoder_adapter.h
-  src/quiche/spdy/core/hpack/hpack_encoder.cc
   src/quiche/spdy/core/hpack/hpack_encoder.h
-  src/quiche/spdy/core/hpack/hpack_entry.cc
-  src/quiche/spdy/core/hpack/hpack_entry.h
-  src/quiche/spdy/core/hpack/hpack_header_table.cc
-  src/quiche/spdy/core/hpack/hpack_header_table.h
-  src/quiche/spdy/core/hpack/hpack_output_stream.cc
-  src/quiche/spdy/core/hpack/hpack_output_stream.h
-  src/quiche/spdy/core/hpack/hpack_static_table.cc
-  src/quiche/spdy/core/hpack/hpack_static_table.h
-  src/quiche/spdy/core/http2_frame_decoder_adapter.cc
   src/quiche/spdy/core/http2_frame_decoder_adapter.h
-  src/quiche/spdy/core/recording_headers_handler.cc
-  src/quiche/spdy/core/recording_headers_handler.h
-  src/quiche/spdy/core/spdy_alt_svc_wire_format.cc
+  src/quiche/spdy/core/http2_header_block.h
   src/quiche/spdy/core/spdy_alt_svc_wire_format.h
   src/quiche/spdy/core/spdy_bitmasks.h
-  src/quiche/spdy/core/spdy_frame_builder.cc
   src/quiche/spdy/core/spdy_frame_builder.h
-  src/quiche/spdy/core/spdy_framer.cc
   src/quiche/spdy/core/spdy_framer.h
   src/quiche/spdy/core/spdy_headers_handler_interface.h
-  src/quiche/spdy/core/spdy_no_op_visitor.cc
-  src/quiche/spdy/core/spdy_no_op_visitor.h
-  src/quiche/spdy/core/spdy_protocol.cc
   src/quiche/spdy/core/spdy_protocol.h
-  src/quiche/spdy/core/zero_copy_output_buffer.h
   src/quiche/web_transport/complete_buffer_visitor.cc
   src/quiche/web_transport/complete_buffer_visitor.h
   src/quiche/web_transport/encapsulated/encapsulated_web_transport.cc
@@ -585,7 +599,6 @@ set(quiche_quic_SOURCES
   src/quiche/quic/core/quic_datagram_queue.h
   src/quiche/quic/core/quic_error_codes.cc
   src/quiche/quic/core/quic_error_codes.h
-  src/quiche/quic/core/quic_flags_list.h
   src/quiche/quic/core/quic_flow_controller.cc
   src/quiche/quic/core/quic_flow_controller.h
   src/quiche/quic/core/quic_framer.cc
diff --git a/third_party/quiche/src b/third_party/quiche/src
index 12f91fb3c..f5548d863 160000
--- a/third_party/quiche/src
+++ b/third_party/quiche/src
@@ -1 +1 @@
-Subproject commit 12f91fb3c7ec2125ebc51f7999e5a159ba3b44de
+Subproject commit f5548d86307c1bc11d9bab7257326898bffd61de
diff --git a/third_party/re2 b/third_party/re2
index e29afa184..6dcd83d60 160000
--- a/third_party/re2
+++ b/third_party/re2
@@ -1 +1 @@
-Subproject commit e29afa1844861971a4cbf5fe559069b42161e97a
+Subproject commit 6dcd83d60f7944926bfd308cc13979fc53dd69ca