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chore: bump V8 to 15.3.51 - #16

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auto-bump/v15.3.51
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chore: bump V8 to 15.3.51#16
kassane wants to merge 1 commit into
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auto-bump/v15.3.51

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@kassane

@kassane kassane commented Aug 10, 2026

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windows-x64 (default) failed — run

Last 80 lines of build log 
�[1;34m==>�[0m effective args.gn:
    # --- args/common.gn ---
    # Base GN args shared across every target. Mirrors just-js/v8's proven args
    # (the closest working reference for modern V8 14.x); per-target files and
    # profile files override these as needed.
    
    is_debug = false
    is_component_build = false
    v8_monolithic = true
    v8_use_external_startup_data = false
    
    # Rust is enabled by default in modern V8 and would pull a prebuilt rust
    # toolchain that depot_tools does not always ship for every host arch. We
    # don't use any Rust-backed components from the monolith, so disable it.
    enable_rust = false
    
    is_clang = true
    clang_use_chrome_plugins = false
    dcheck_always_on = false
    use_custom_libcxx = false
    use_rtti = false
    
    symbol_level = 0
    strip_debug_info = true
    treat_warnings_as_errors = false
    
    v8_enable_i18n_support = false
    v8_enable_test_features = false
    v8_enable_gdbjit = false
    v8_enable_backtrace = false
    v8_enable_snapshot_compression = false
    v8_enable_temporal_support = false
    v8_deprecation_warnings = false
    v8_imminent_deprecation_warnings = false
    
    # --- args/windows.x64.gn ---
    target_os = "win"
    target_cpu = "x64"
    v8_target_cpu = "x64"
    
    # --- args/profiles/default.gn ---
    # Default profile: smallest embedder-friendly build, no sandbox,
    # no pointer compression, no ICU. Matches the lowest common denominator
    # expected by most language bindings.
    v8_enable_pointer_compression = false
    v8_enable_sandbox = false
    
    cc_wrapper = "ccache"
�[1;34m==>�[0m gn gen /d/a/libv8/libv8/v8/out/windows-x64.default
Traceback (most recent call last):
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 342, in <module>
    main()
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 277, in main
    env = _LoadToolchainEnv(cpu, toolchain_root, win_sdk_path, target_store)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 194, in _LoadToolchainEnv
    return _ExtractImportantEnvironment(variables)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 68, in _ExtractImportantEnvironment
    raise Exception(
Exception: Path "C:\Program Files (x86)\Windows Kits\10\\include\10.0.28000.0\\um" from environment variable "include" does not exist. Make sure the necessary SDK is installed.
ERROR at //build/toolchain/win/win_toolchain_data.gni:9:7: Script returned non-zero exit code.
      exec_script("//build/toolchain/win/setup_toolchain.py",
      ^----------
Current dir: D:/a/libv8/libv8/v8/out/windows-x64.default/
Command: D:/a/libv8/libv8/.depot_tools/bootstrap-2@3_11_8_chromium_35_bin/python3/bin/python3.exe D:/a/libv8/libv8/v8/build/toolchain/win/setup_toolchain.py "C:\Program Files/Microsoft Visual Studio/18\Enterprise" "C:\Program Files (x86)\Windows Kits\10" "C:\Windows\System32;C:\Windows\SysWOW64;Arm64Unused" win x86 environment.x86
Returned 1.
See //build/toolchain/win/toolchain.gni:13:1: whence //build/toolchain/win/win_toolchain_data.gni was imported.
import("//build/toolchain/win/win_toolchain_data.gni")
^----------------------------------------------------
See //buildtools/third_party/libc++/BUILD.gn:8:1: whence //buildtools/third_party/libc++/modules.gni was imported.
import("//buildtools/third_party/libc++/modules.gni")
^---------------------------------------------------
See //build/config/BUILDCONFIG.gn:633:19: which caused the file to be included.
        deps += [ "//buildtools/third_party/libc++:all_modules" ]
                  ^--------------------------------------------

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windows-x64 (pointer-compression) failed — run

Last 80 lines of build log 
    clang_use_chrome_plugins = false
    dcheck_always_on = false
    use_custom_libcxx = false
    use_rtti = false
    
    symbol_level = 0
    strip_debug_info = true
    treat_warnings_as_errors = false
    
    v8_enable_i18n_support = false
    v8_enable_test_features = false
    v8_enable_gdbjit = false
    v8_enable_backtrace = false
    v8_enable_snapshot_compression = false
    v8_enable_temporal_support = false
    v8_deprecation_warnings = false
    v8_imminent_deprecation_warnings = false
    
    # --- args/windows.x64.gn ---
    target_os = "win"
    target_cpu = "x64"
    v8_target_cpu = "x64"
    
    # --- args/profiles/pointer-compression.gn ---
    # Pointer compression enabled. Callers MUST be compiled with the same flag.
    v8_enable_pointer_compression = true
    v8_enable_sandbox = false
    
    # When pointer compression is on, V8 enables partition_alloc's allocator
    # shim (CPPGC_POINTER_COMPRESSION), which forward-declares the global
    # operator new / operator delete overloads with default visibility.
    # macOS 15.5 SDK's libc++ (Xcode 16.4+) declares those same operators
    # with hidden visibility, so clang errors with "visibility does not
    # match previous declaration" against system libc++. Linking V8's own
    # bundled libc++ here keeps the declarations consistent across all
    # translation units.
    #
    # linux-arm64 is the exception: it builds with system gcc-14 + libstdc++
    # (V8 14.9's bundled clang prebuilt has no Linux_aarch64 build, see
    # args/linux.arm64.gn). The macOS visibility conflict doesn't apply
    # (libstdc++, not libc++), and V8's bundled libc++ headers require
    # GCC 15+ (they use __is_unbounded_array / __is_pointer / __decay /
    # __add_*_reference intrinsics gcc-14 doesn't support), so flipping
    # use_custom_libcxx=true there breaks the build at
    # libc++abi/cxa_aux_runtime. Keep system libstdc++ on that one target.
    if (target_os == "linux" && target_cpu == "arm64") {
      use_custom_libcxx = false
    } else {
      use_custom_libcxx = true
    }
    
    cc_wrapper = "ccache"
�[1;34m==>�[0m gn gen /d/a/libv8/libv8/v8/out/windows-x64.pointer-compression
Traceback (most recent call last):
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 342, in <module>
    main()
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 277, in main
    env = _LoadToolchainEnv(cpu, toolchain_root, win_sdk_path, target_store)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 194, in _LoadToolchainEnv
    return _ExtractImportantEnvironment(variables)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 68, in _ExtractImportantEnvironment
    raise Exception(
Exception: Path "C:\Program Files (x86)\Windows Kits\10\\include\10.0.28000.0\\um" from environment variable "include" does not exist. Make sure the necessary SDK is installed.
ERROR at //build/toolchain/win/win_toolchain_data.gni:9:7: Script returned non-zero exit code.
      exec_script("//build/toolchain/win/setup_toolchain.py",
      ^----------
Current dir: D:/a/libv8/libv8/v8/out/windows-x64.pointer-compression/
Command: D:/a/libv8/libv8/.depot_tools/bootstrap-2@3_11_8_chromium_35_bin/python3/bin/python3.exe D:/a/libv8/libv8/v8/build/toolchain/win/setup_toolchain.py "C:\Program Files/Microsoft Visual Studio/18\Enterprise" "C:\Program Files (x86)\Windows Kits\10" "C:\Windows\System32;C:\Windows\SysWOW64;Arm64Unused" win x86 environment.x86
Returned 1.
See //buildtools/third_party/libc++/modules.gni:14:3: whence //build/toolchain/win/win_toolchain_data.gni was imported.
  import("//build/toolchain/win/win_toolchain_data.gni")
  ^----------------------------------------------------
See //buildtools/third_party/libc++/BUILD.gn:8:1: whence //buildtools/third_party/libc++/modules.gni was imported.
import("//buildtools/third_party/libc++/modules.gni")
^---------------------------------------------------
See //build/config/BUILDCONFIG.gn:633:19: which caused the file to be included.
        deps += [ "//buildtools/third_party/libc++:all_modules" ]
                  ^--------------------------------------------

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linux-arm64 (default) failed — run

Last 80 lines of build log 
FAILED: obj/torque_generated_definitions/managed-tq.o 
ccache aarch64-linux-gnu-g++ -MD -MF obj/torque_generated_definitions/managed-tq.o.d -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__ARM_NEON__=1 -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -D_GLIBCXX_ASSERTIONS=1 -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_OZONE=1 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64 -DV8_LOGGING_LEVEL=1 -DBUILTIN_BLOCK_POSITION -DV8_USE_HOST_CPU_ARM_FEATURES -DV8_ATOMIC_OBJECT_FIELD_WRITES -DV8_ENABLE_LAZY_SOURCE_POSITIONS -DV8_WIN64_UNWINDING_INFO -DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH -DV8_ENABLE_CONTROL_FLOW_INTEGRITY -DV8_ENABLE_SPARKPLUG -DV8_ENABLE_SPARKPLUG_PLUS -DV8_ENABLE_MAGLEV -DV8_ENABLE_TURBOFAN -DV8_ENABLE_WEBASSEMBLY -DV8_ENABLE_CONTINUATION_PRESERVED_EMBEDDER_DATA -DV8_ALLOCATION_FOLDING -DV8_ALLOCATION_SITE_TRACKING -DV8_ADVANCED_BIGINT_ALGORITHMS -DV8_USE_ZLIB -DV8_ENABLE_MAGLEV_GRAPH_PRINTER -DV8_ENABLE_BUILTIN_JUMP_TABLE_SWITCH -DV8_ENABLE_EXTENSIBLE_RO_SNAPSHOT -DV8_ENABLE_BLACK_ALLOCATED_PAGES -DV8_ENABLE_UNDEFINED_DOUBLE -DV8_WASM_RANDOM_FUZZERS -DPA_ENABLE_USER_SPACE_ZERO_SEGMENT -DV8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT=0 -DV8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT=0 -DV8_PROMISE_INTERNAL_FIELD_COUNT=0 -DV8_USE_DEFAULT_HASHER_SECRET=true -DV8_DISALLOW_JS_IN_API_INTERRUPTS_IS_CHECKED -DV8_CPPGC_MICROTASK_QUEUE -DV8_HAVE_TARGET_OS -DV8_TARGET_OS_LINUX -DV8_TARGET_ARCH_ARM64 -DCPPGC_SUPPORTS_OBJECT_NAMES -DCPPGC_CAGED_HEAP -DCPPGC_YOUNG_GENERATION -DCPPGC_POINTER_COMPRESSION -DCPPGC_ENABLE_LARGER_CAGE -DCPPGC_ENABLE_OBJECT_SECTION_GCINFO -DCPPGC_SLIM_WRITE_BARRIER -DABSL_ALLOCATOR_NOTHROW=1 -I../.. -Igen -I../../include -Igen/include -I../../third_party/abseil-cpp -I../../third_party/fp16/src/include -Wall -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -Wno-comments -Wno-packed-not-aligned -Wno-missing-field-initializers -Wno-unused-parameter -Wno-psabi -fno-strict-overflow -fno-ident -fno-math-errno -fno-strict-aliasing -fstack-protector -funwind-tables -fPIC -pipe -pthread -mbranch-protection=standard -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -fno-omit-frame-pointer -g0 -Wno-invalid-offsetof -Wno-strict-overflow -Wno-return-type -Wno-int-in-bool-context -Wno-deprecated -Wno-stringop-overflow -Wno-stringop-overread -Wno-restrict -Wno-array-bounds -Wno-nonnull -Wno-dangling-pointer -O3 -fdata-sections -ffunction-sections -fvisibility=default -Wno-narrowing -Wno-class-memaccess -Wno-invalid-offsetof -std=gnu++20 -fno-exceptions -fno-rtti  -c gen/torque-generated/src/objects/managed-tq.cc -o obj/torque_generated_definitions/managed-tq.o
In file included from ../../src/objects/managed.h:23,
                 from gen/torque-generated/src/objects/managed-tq.cc:1:
../../src/objects/object-macros.h:45:3: error: ‘#pragma’ is not allowed here
   45 |   _Pragma("pack(push)") _Pragma("pack(4)") _Pragma("GCC diagnostic push") \
      |   ^~~~~~~
../../src/objects/object-macros.h:63:19: note: in expansion of macro ‘V8_OBJECT_PUSH’
   63 | #define V8_OBJECT V8_OBJECT_PUSH
      |                   ^~~~~~~~~~~~~~
../../src/objects/managed.h:126:1: note: in expansion of macro ‘V8_OBJECT’
  126 | V8_OBJECT class CppGCManaged : public CppGCManagedBase {
      | ^~~~~~~~~
../../src/objects/managed.h:137:15: error: ‘CppType’ does not name a type
  137 |     V8_INLINE CppType* operator->() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:138:21: error: ‘CppType’ does not name a type
  138 |     V8_INLINE const CppType* operator->() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:142:15: error: ‘CppType’ does not name a type
  142 |     V8_INLINE CppType& operator*() V8_LIFETIME_BOUND { return *ptr_; }
      |               ^~~~~~~
../../src/objects/managed.h:143:21: error: ‘CppType’ does not name a type
  143 |     V8_INLINE const CppType& operator*() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:147:15: error: ‘CppType’ does not name a type
  147 |     V8_INLINE CppType* raw() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:148:21: error: ‘CppType’ does not name a type
  148 |     V8_INLINE const CppType* raw() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:151:15: error: ‘CppType’ does not name a type
  151 |     V8_INLINE CppType* get() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:152:21: error: ‘CppType’ does not name a type
  152 |     V8_INLINE const CppType* get() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:156:31: error: ‘CppType’ was not declared in this scope
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                               ^~~~~~~
../../src/objects/managed.h:156:38: error: template argument 1 is invalid
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                                      ^
../../src/objects/managed.h:156:20: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                    ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:157:31: error: ‘CppType’ was not declared in this scope
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                               ^~~~~~~
../../src/objects/managed.h:157:38: error: template argument 1 is invalid
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                                      ^
../../src/objects/managed.h:157:20: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                    ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:166:53: error: ‘CppType’ was not declared in this scope
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                                     ^~~~~~~
../../src/objects/managed.h:166:60: error: template argument 1 is invalid
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                                            ^
../../src/objects/managed.h:166:42: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                          ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:173:44: error: ‘CppType’ was not declared in this scope
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                                            ^~~~~~~
../../src/objects/managed.h:173:51: error: template argument 1 is invalid
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                                                   ^
../../src/objects/managed.h:173:52: error: expected ‘)’ before ‘ptr’
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                           ~                        ^~~~
      |                                                    )
../../src/objects/managed.h:176:21: error: ‘CppType’ was not declared in this scope
  176 |     std::shared_ptr<CppType> ptr_;
      |                     ^~~~~~~
../../src/objects/managed.h:176:28: error: template argument 1 is invalid
  176 |     std::shared_ptr<CppType> ptr_;
      |                            ^

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linux-arm64 (pointer-compression) failed — run

Last 80 lines of build log 
FAILED: obj/torque_generated_definitions/managed-tq.o 
ccache aarch64-linux-gnu-g++ -MD -MF obj/torque_generated_definitions/managed-tq.o.d -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__ARM_NEON__=1 -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_NONE -D_GLIBCXX_ASSERTIONS=1 -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_OZONE=1 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DV8_TYPED_ARRAY_MAX_SIZE_IN_HEAP=64 -DV8_LOGGING_LEVEL=1 -DV8_CONTIGUOUS_COMPRESSED_RO_SPACE -DV8_CONTIGUOUS_COMPRESSED_RO_SPACE_SIZE_MB=16 -DBUILTIN_BLOCK_POSITION -DV8_USE_HOST_CPU_ARM_FEATURES -DV8_ATOMIC_OBJECT_FIELD_WRITES -DV8_ENABLE_LAZY_SOURCE_POSITIONS -DV8_WIN64_UNWINDING_INFO -DV8_ENABLE_REGEXP_INTERPRETER_THREADED_DISPATCH -DV8_ENABLE_CONTROL_FLOW_INTEGRITY -DV8_SHORT_BUILTIN_CALLS -DV8_EXTERNAL_CODE_SPACE -DV8_ENABLE_SPARKPLUG -DV8_ENABLE_SPARKPLUG_PLUS -DV8_ENABLE_MAGLEV -DV8_ENABLE_TURBOFAN -DV8_ENABLE_WEBASSEMBLY -DV8_ENABLE_CONTINUATION_PRESERVED_EMBEDDER_DATA -DV8_ALLOCATION_FOLDING -DV8_ALLOCATION_SITE_TRACKING -DV8_ADVANCED_BIGINT_ALGORITHMS -DV8_STATIC_ROOTS -DV8_USE_ZLIB -DV8_ENABLE_MAGLEV_GRAPH_PRINTER -DV8_ENABLE_BUILTIN_JUMP_TABLE_SWITCH -DV8_ENABLE_EXTENSIBLE_RO_SNAPSHOT -DV8_ENABLE_BLACK_ALLOCATED_PAGES -DV8_ENABLE_UNDEFINED_DOUBLE -DV8_ENABLE_PARTITION_ALLOC -DV8_WASM_RANDOM_FUZZERS -DPA_ENABLE_USER_SPACE_ZERO_SEGMENT -DV8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT=0 -DV8_ARRAY_BUFFER_VIEW_INTERNAL_FIELD_COUNT=0 -DV8_PROMISE_INTERNAL_FIELD_COUNT=0 -DV8_USE_DEFAULT_HASHER_SECRET=true -DV8_COMPRESS_POINTERS -DV8_COMPRESS_POINTERS_IN_SHARED_CAGE -DV8_31BIT_SMIS_ON_64BIT_ARCH -DV8_DISALLOW_JS_IN_API_INTERRUPTS_IS_CHECKED -DV8_CPPGC_MICROTASK_QUEUE -DV8_HAVE_TARGET_OS -DV8_TARGET_OS_LINUX -DV8_TARGET_ARCH_ARM64 -DCPPGC_SUPPORTS_OBJECT_NAMES -DCPPGC_CAGED_HEAP -DCPPGC_YOUNG_GENERATION -DCPPGC_POINTER_COMPRESSION -DCPPGC_ENABLE_LARGER_CAGE -DCPPGC_ENABLE_OBJECT_SECTION_GCINFO -DCPPGC_SLIM_WRITE_BARRIER -DABSL_ALLOCATOR_NOTHROW=1 -I../.. -Igen -I../../include -Igen/include -I../../third_party/abseil-cpp -I../../third_party/fp16/src/include -I../../third_party/partition_alloc/src -Igen/third_party/partition_alloc/src -Wall -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -Wno-comments -Wno-packed-not-aligned -Wno-missing-field-initializers -Wno-unused-parameter -Wno-psabi -fno-strict-overflow -fno-ident -fno-math-errno -fno-strict-aliasing -fstack-protector -funwind-tables -fPIC -pipe -pthread -mbranch-protection=standard -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -fno-omit-frame-pointer -g0 -Wno-invalid-offsetof -Wno-strict-overflow -Wno-return-type -Wno-int-in-bool-context -Wno-deprecated -Wno-stringop-overflow -Wno-stringop-overread -Wno-restrict -Wno-array-bounds -Wno-nonnull -Wno-dangling-pointer -O3 -fdata-sections -ffunction-sections -fvisibility=default -Wno-narrowing -Wno-class-memaccess -Wno-invalid-offsetof -std=gnu++20 -fno-exceptions -fno-rtti  -c gen/torque-generated/src/objects/managed-tq.cc -o obj/torque_generated_definitions/managed-tq.o
In file included from ../../src/objects/managed.h:23,
                 from gen/torque-generated/src/objects/managed-tq.cc:1:
../../src/objects/object-macros.h:45:3: error: ‘#pragma’ is not allowed here
   45 |   _Pragma("pack(push)") _Pragma("pack(4)") _Pragma("GCC diagnostic push") \
      |   ^~~~~~~
../../src/objects/object-macros.h:63:19: note: in expansion of macro ‘V8_OBJECT_PUSH’
   63 | #define V8_OBJECT V8_OBJECT_PUSH
      |                   ^~~~~~~~~~~~~~
../../src/objects/managed.h:126:1: note: in expansion of macro ‘V8_OBJECT’
  126 | V8_OBJECT class CppGCManaged : public CppGCManagedBase {
      | ^~~~~~~~~
../../src/objects/managed.h:137:15: error: ‘CppType’ does not name a type
  137 |     V8_INLINE CppType* operator->() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:138:21: error: ‘CppType’ does not name a type
  138 |     V8_INLINE const CppType* operator->() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:142:15: error: ‘CppType’ does not name a type
  142 |     V8_INLINE CppType& operator*() V8_LIFETIME_BOUND { return *ptr_; }
      |               ^~~~~~~
../../src/objects/managed.h:143:21: error: ‘CppType’ does not name a type
  143 |     V8_INLINE const CppType& operator*() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:147:15: error: ‘CppType’ does not name a type
  147 |     V8_INLINE CppType* raw() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:148:21: error: ‘CppType’ does not name a type
  148 |     V8_INLINE const CppType* raw() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:151:15: error: ‘CppType’ does not name a type
  151 |     V8_INLINE CppType* get() V8_LIFETIME_BOUND { return ptr_.get(); }
      |               ^~~~~~~
../../src/objects/managed.h:152:21: error: ‘CppType’ does not name a type
  152 |     V8_INLINE const CppType* get() const V8_LIFETIME_BOUND {
      |                     ^~~~~~~
../../src/objects/managed.h:156:31: error: ‘CppType’ was not declared in this scope
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                               ^~~~~~~
../../src/objects/managed.h:156:38: error: template argument 1 is invalid
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                                      ^
../../src/objects/managed.h:156:20: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  156 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() & { return ptr_; }
      |                    ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:157:31: error: ‘CppType’ was not declared in this scope
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                               ^~~~~~~
../../src/objects/managed.h:157:38: error: template argument 1 is invalid
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                                      ^
../../src/objects/managed.h:157:20: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  157 |     V8_INLINE std::shared_ptr<CppType> as_shared_ptr() && {
      |                    ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:166:53: error: ‘CppType’ was not declared in this scope
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                                     ^~~~~~~
../../src/objects/managed.h:166:60: error: template argument 1 is invalid
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                                            ^
../../src/objects/managed.h:166:42: error: ‘<expression error>’ in namespace ‘std’ does not name a type
  166 |     V8_INLINE bool operator==(const std::shared_ptr<CppType>& other) const {
      |                                          ^~~~~~~~~~~~~~~~~~~
../../src/objects/managed.h:173:44: error: ‘CppType’ was not declared in this scope
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                                            ^~~~~~~
../../src/objects/managed.h:173:51: error: template argument 1 is invalid
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                                                   ^
../../src/objects/managed.h:173:52: error: expected ‘)’ before ‘ptr’
  173 |     V8_INLINE explicit Ptr(std::shared_ptr<CppType> ptr)
      |                           ~                        ^~~~
      |                                                    )
../../src/objects/managed.h:176:21: error: ‘CppType’ was not declared in this scope
  176 |     std::shared_ptr<CppType> ptr_;
      |                     ^~~~~~~
../../src/objects/managed.h:176:28: error: template argument 1 is invalid
  176 |     std::shared_ptr<CppType> ptr_;
      |                            ^

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windows-arm64 (default) failed — run

Last 80 lines of build log 
�[1;34m==>�[0m effective args.gn:
    # --- args/common.gn ---
    # Base GN args shared across every target. Mirrors just-js/v8's proven args
    # (the closest working reference for modern V8 14.x); per-target files and
    # profile files override these as needed.
    
    is_debug = false
    is_component_build = false
    v8_monolithic = true
    v8_use_external_startup_data = false
    
    # Rust is enabled by default in modern V8 and would pull a prebuilt rust
    # toolchain that depot_tools does not always ship for every host arch. We
    # don't use any Rust-backed components from the monolith, so disable it.
    enable_rust = false
    
    is_clang = true
    clang_use_chrome_plugins = false
    dcheck_always_on = false
    use_custom_libcxx = false
    use_rtti = false
    
    symbol_level = 0
    strip_debug_info = true
    treat_warnings_as_errors = false
    
    v8_enable_i18n_support = false
    v8_enable_test_features = false
    v8_enable_gdbjit = false
    v8_enable_backtrace = false
    v8_enable_snapshot_compression = false
    v8_enable_temporal_support = false
    v8_deprecation_warnings = false
    v8_imminent_deprecation_warnings = false
    
    # --- args/windows.arm64.gn ---
    target_os = "win"
    target_cpu = "arm64"
    v8_target_cpu = "arm64"
    
    # --- args/profiles/default.gn ---
    # Default profile: smallest embedder-friendly build, no sandbox,
    # no pointer compression, no ICU. Matches the lowest common denominator
    # expected by most language bindings.
    v8_enable_pointer_compression = false
    v8_enable_sandbox = false
�[1;34m==>�[0m gn gen /c/a/libv8/libv8/v8/out/windows-arm64.default
Traceback (most recent call last):
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 342, in <module>
    main()
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 277, in main
    env = _LoadToolchainEnv(cpu, toolchain_root, win_sdk_path, target_store)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 194, in _LoadToolchainEnv
    return _ExtractImportantEnvironment(variables)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 68, in _ExtractImportantEnvironment
    raise Exception(
Exception: Path "C:\Program Files (x86)\Windows Kits\10\\include\10.0.28000.0\\um" from environment variable "include" does not exist. Make sure the necessary SDK is installed.
ERROR at //build/toolchain/win/win_toolchain_data.gni:9:7: Script returned non-zero exit code.
      exec_script("//build/toolchain/win/setup_toolchain.py",
      ^----------
Current dir: C:/a/libv8/libv8/v8/out/windows-arm64.default/
Command: C:/a/libv8/libv8/.depot_tools/bootstrap-2@3_11_8_chromium_35_bin/python3/bin/python3.exe C:/a/libv8/libv8/v8/build/toolchain/win/setup_toolchain.py "C:\Program Files/Microsoft Visual Studio/2022\Enterprise" "C:\Program Files (x86)\Windows Kits\10" "C:\Windows\System32;C:\Windows\SysWOW64;Arm64Unused" win x86 environment.x86
Returned 1.
See //build/toolchain/win/toolchain.gni:13:1: whence //build/toolchain/win/win_toolchain_data.gni was imported.
import("//build/toolchain/win/win_toolchain_data.gni")
^----------------------------------------------------
See //build/toolchain/win/BUILD.gn:6:1: whence //build/toolchain/win/toolchain.gni was imported.
import("//build/toolchain/win/toolchain.gni")
^-------------------------------------------
See //BUILD.gn:2503:14: which caused the file to be included.
    deps = [ ":torque($toolchain)" ]
             ^--------------------

@github-actions

github-actions Bot commented Aug 10, 2026

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windows-arm64 (pointer-compression) failed — run

Last 80 lines of build log 
    
    is_clang = true
    clang_use_chrome_plugins = false
    dcheck_always_on = false
    use_custom_libcxx = false
    use_rtti = false
    
    symbol_level = 0
    strip_debug_info = true
    treat_warnings_as_errors = false
    
    v8_enable_i18n_support = false
    v8_enable_test_features = false
    v8_enable_gdbjit = false
    v8_enable_backtrace = false
    v8_enable_snapshot_compression = false
    v8_enable_temporal_support = false
    v8_deprecation_warnings = false
    v8_imminent_deprecation_warnings = false
    
    # --- args/windows.arm64.gn ---
    target_os = "win"
    target_cpu = "arm64"
    v8_target_cpu = "arm64"
    
    # --- args/profiles/pointer-compression.gn ---
    # Pointer compression enabled. Callers MUST be compiled with the same flag.
    v8_enable_pointer_compression = true
    v8_enable_sandbox = false
    
    # When pointer compression is on, V8 enables partition_alloc's allocator
    # shim (CPPGC_POINTER_COMPRESSION), which forward-declares the global
    # operator new / operator delete overloads with default visibility.
    # macOS 15.5 SDK's libc++ (Xcode 16.4+) declares those same operators
    # with hidden visibility, so clang errors with "visibility does not
    # match previous declaration" against system libc++. Linking V8's own
    # bundled libc++ here keeps the declarations consistent across all
    # translation units.
    #
    # linux-arm64 is the exception: it builds with system gcc-14 + libstdc++
    # (V8 14.9's bundled clang prebuilt has no Linux_aarch64 build, see
    # args/linux.arm64.gn). The macOS visibility conflict doesn't apply
    # (libstdc++, not libc++), and V8's bundled libc++ headers require
    # GCC 15+ (they use __is_unbounded_array / __is_pointer / __decay /
    # __add_*_reference intrinsics gcc-14 doesn't support), so flipping
    # use_custom_libcxx=true there breaks the build at
    # libc++abi/cxa_aux_runtime. Keep system libstdc++ on that one target.
    if (target_os == "linux" && target_cpu == "arm64") {
      use_custom_libcxx = false
    } else {
      use_custom_libcxx = true
    }
�[1;34m==>�[0m gn gen /c/a/libv8/libv8/v8/out/windows-arm64.pointer-compression
Traceback (most recent call last):
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 342, in <module>
    main()
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 277, in main
    env = _LoadToolchainEnv(cpu, toolchain_root, win_sdk_path, target_store)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 194, in _LoadToolchainEnv
    return _ExtractImportantEnvironment(variables)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\a\libv8\libv8\v8\build\toolchain\win\setup_toolchain.py", line 68, in _ExtractImportantEnvironment
    raise Exception(
Exception: Path "C:\Program Files (x86)\Windows Kits\10\\include\10.0.28000.0\\um" from environment variable "include" does not exist. Make sure the necessary SDK is installed.
ERROR at //build/toolchain/win/win_toolchain_data.gni:9:7: Script returned non-zero exit code.
      exec_script("//build/toolchain/win/setup_toolchain.py",
      ^----------
Current dir: C:/a/libv8/libv8/v8/out/windows-arm64.pointer-compression/
Command: C:/a/libv8/libv8/.depot_tools/bootstrap-2@3_11_8_chromium_35_bin/python3/bin/python3.exe C:/a/libv8/libv8/v8/build/toolchain/win/setup_toolchain.py "C:\Program Files/Microsoft Visual Studio/2022\Enterprise" "C:\Program Files (x86)\Windows Kits\10" "C:\Windows\System32;C:\Windows\SysWOW64;Arm64Unused" win x86 environment.x86
Returned 1.
See //buildtools/third_party/libc++/modules.gni:14:3: whence //build/toolchain/win/win_toolchain_data.gni was imported.
  import("//build/toolchain/win/win_toolchain_data.gni")
  ^----------------------------------------------------
See //buildtools/third_party/libc++/BUILD.gn:8:1: whence //buildtools/third_party/libc++/modules.gni was imported.
import("//buildtools/third_party/libc++/modules.gni")
^---------------------------------------------------
See //build/config/BUILDCONFIG.gn:633:19: which caused the file to be included.
        deps += [ "//buildtools/third_party/libc++:all_modules" ]
                  ^--------------------------------------------

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@kassane