PR-URL: #30109
Reviewed-By: Myles Borins <myles.borins@gmail.com>

PR-URL: #30109
Reviewed-By: Myles Borins <myles.borins@gmail.com>

Backport-PR-URL: #30109
PR-URL: #28016
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Original commit message:

    [testrunner] delete ancient junit compatible format support

    Testrunner has ancient support for JUnit compatible XML output.

    This CL removes this old feature.

    R=mstarzinger@chromium.org,jgruber@chromium.org,jkummerow@chromium.org
    CC=​machenbach@chromium.org

    Bug: v8:8728
    Change-Id: I7e1beb011dbaec3aa1a27398a5c52abdd778eaf0
    Reviewed-on: https://chromium-review.googlesource.com/c/1430065
    Reviewed-by: Jakob Gruber <jgruber@chromium.org>
    Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
    Commit-Queue: Tamer Tas <tmrts@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#59045}

Refs: v8/v8@bd019bd

Backport-PR-URL: #30109
PR-URL: #26685
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

Backport-PR-URL: #30109
PR-URL: #26685
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

Fixes a compilation issue on some platforms

Backport-PR-URL: #30109
PR-URL: #27375
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

This should be semver-patch since actual invocation is version
conditional.

Backport-PR-URL: #30109
PR-URL: #27375
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

`std::atomic_init<size_t>` is not implemented on all platforms.

Backport-PR-URL: #30109
PR-URL: #27375
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

Backport-PR-URL: #30109
PR-URL: #27375
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

Backport-PR-URL: #30109
PR-URL: #28016
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

until c6196ad7a2d601a4e1fdb313bfe2ec727fd67f7a

Co-authored-by: Ujjwal Sharma <usharma1998@gmail.com>
Co-authored-by: Michaël Zasso <targos@protonmail.com>

Backport-PR-URL: #30109
PR-URL: #29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

Backport-PR-URL: #30109
PR-URL: #29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

Patch V8 (compiler/js-heap-broker.cc) to remove the use of an optional
property, which is a fairly new C++ feature, since that requires a newer
XCode version than the minimum requirement in BUILDING.md and thus
breaks CI.

Backport-PR-URL: #30109
PR-URL: #29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

Original commit message:

    [debugger] Fix code coverage for break/return inside switch-case

    Case statements have a list of statements associated with them, but are
    not blocks, and were hence not fixed-up correctly for code coverage.
    This CL also applies the fix-up to the "body" of case statements,
    in this way removing ranges reported as uncovered between the final
    break/return in a case and the next case (or end of function).

    Drive-by: Add optional pretty printing to code coverage test results.

    Change-Id: I5f4002d4e17b7253ed516d99f7c389ab2264be10
    Bug: v8:9705
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1798426
    Reviewed-by: Toon Verwaest <verwaest@chromium.org>
    Reviewed-by: Jakob Gruber <jgruber@chromium.org>
    Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#63719}

Refs: v8/v8@deac757

Backport-PR-URL: #30109
PR-URL: #29626
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

Original commit message:

    [build] Add message-template.h to build file

    This was missed during a file move and can cause build bugs.

    Bug: chromium:991547
    Change-Id: I157e7bb656956c08293c205c0d00884aecc7adee
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1798430
    Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
    Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
    Auto-Submit: Peter Marshall <petermarshall@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#63711}

Refs: v8/v8@716875d

Backport-PR-URL: #30109
PR-URL: #29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

Original commit message:

    [regexp] Fix the order of named captures on the groups object

    Named capture properties on the groups object should be ordered by the
    capture index (and not alpha-sorted). This was accidentally broken in
    https://crrev.com/c/1687413.

    Bug: v8:9822,v8:9423
    Change-Id: Iac6f866f077a1b7ce557ba47e8ba5d7e7014b3ce
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1864829
    Auto-Submit: Jakob Gruber <jgruber@chromium.org>
    Reviewed-by: Peter Marshall <petermarshall@chromium.org>
    Commit-Queue: Peter Marshall <petermarshall@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#64306}

Refs: v8/v8@ed40ab1
Fixes: #29878

Backport-PR-URL: #30109
PR-URL: #30064
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Original commit message:

    [api] Fix handle leak when getting Context embedder data

    The `Context::SlowGetAlignedPointerFromEmbedderData()` method returns
    a pointer, so the fact that it allocates handles is not obvious to
    the caller.

    Since this is the slow path anyway, simply add a handle scope inside
    of it.

    The tests are also modified to perform the same check for the
    `Object` equivalent of this method.

    Change-Id: I5f03c9a7b70b3a17315609df021606a53c9feb2d
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1879902
    Reviewed-by: Yang Guo <yangguo@chromium.org>
    Commit-Queue: Yang Guo <yangguo@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#64583}

Refs: v8/v8@e5dbc95
Fixes: #30127
Backport-PR-URL: #30109
PR-URL: #30130
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

Original commit message:

    PPC: Using a scratch register under LoadRealStackLimit

    Change-Id: Id9e9142a8ff185309b91dcfff70dae8ccf8b5166
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1954244
    Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
    Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
    Cr-Commit-Position: refs/heads/master@{#65357}

Refs: v8/v8@0a05508
PR-URL: #30109
Reviewed-By: Myles Borins <myles.borins@gmail.com>

Original commit message:

    [postmortem] Load files using utf-8 to support Python 3

    Change-Id: I174d38cc33210c07d1a7596627e1b2d21bb06313
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1895560
    Reviewed-by: Mathias Bynens <mathias@chromium.org>
    Commit-Queue: Michaël Zasso <mic.besace@gmail.com>
    Cr-Commit-Position: refs/heads/master@{#64717}

Refs: v8/v8@a7dffcd

Backport-PR-URL: #30109
PR-URL: #30218
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

This commit updates V8's postmortem metadata generation script
to support V8 7.8.

The following metadata has changed:

- v8dbg_class_JSDate__value__Object
  - The postmortem metadata generation script needed to be
    updated. No action should be required by postmortem tools.

- v8dbg_class_JSRegExp__source__Object
  - The postmortem metadata generation script needed to be
    updated. No action should be required by postmortem tools.

Backport-PR-URL: #30109
PR-URL: #29694
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

deps: revert 2ac8bb719 from upstream V8

Original commit message:

    profiler: Allow querying SnapshotObjectId for native objects

    - Adds regular native heap entries to the HeapObjectsMap.
    - Adds a side map for keeping a mapping of native objects to their canonical
      heap entry that they have been merged into.

    Change-Id: Ida00628126ded1948ceb2a0cbe14da817af7f361
    Bug: chromium:988350
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1720810
    Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
    Reviewed-by: Alexei Filippov <alph@chromium.org>
    Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#63140}

Refs: v8/v8@2ac8bb7

[The `SuppressMicrotaskExecutionScope` hack only works because
the constructor that allows specifying an alternative microtask
queue was never actually implemented.]

deps: revert fb698cec37 from upstream V8

Original commit message:

    [isolate-data] Move hot fields closer to isolate_root

    In generated code, we access fields inside IsolateData through the
    root-register. On some platforms it is significantly cheaper to access
    things that are close to the root-register value than things that are
    located far away. The motivation for this CL was a 5% difference in
    Octane/Mandreel scores between

    // Part of the stack check.
    cmpq rsp,[r13+0x9ea8]

    and

    cmpq rsp,[r13-0x30]  // Mandreel score improved by 5%.

    This moves the StackGuard up to fix Mandreel. As a drive-by, also move
    two more fields up that are accessed by each CallCFunction.

    Tbr: yangguo@chromium.org
    Bug: v8:9534,chromium:993264
    Change-Id: I5418b63d40274a138e285fa3c99b96e33a814fb1
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1751345
    Reviewed-by: Jakob Gruber <jgruber@chromium.org>
    Reviewed-by: Yang Guo <yangguo@chromium.org>
    Auto-Submit: Jakob Gruber <jgruber@chromium.org>
    Commit-Queue: Yang Guo <yangguo@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#63187}

Refs: v8/v8@fb698ce

src: re-add flags removed in V8 7.8 as no-ops

PR-URL: #30109
Reviewed-By: Myles Borins <myles.borins@gmail.com>

Notable changes:

New assert APIs

The `assert` module now provides experimental `assert.match()` and
`assert.doesNotMatch()` methods. They will validate that the first argument is a
string and matches (or does not match) the provided regular expression

This is an experimental feature.

Ruben Bridgewater [#30929](#30929).

Advanced serialization for IPC

The `child_process` and `cluster` modules now support a `serialization` option
to change the serialization mechanism used for IPC. The option can have one of
two values:

* `'json'` (default): `JSON.stringify()` and `JSON.parse()` are used. This is
  how message serialization was done before.
* `'advanced'`: The serialization API of the `v8` module is used. It is based on
  the HTML structured clone algorithm.
  and is able to serialize more built-in JavaScript object types, such as
  `BigInt`, `Map`, `Set` etc. as well as circular data structures.

Anna Henningsen [#30162](#30162).

CLI flags

The new `--trace-exit` CLI flag makes Node.js print a stack trace whenever the
Node.js environment is exited proactively (i.e. by invoking the `process.exit()`
function or pressing Ctrl+C).

legendecas [#30516](#30516).

___

The new `--trace-uncaught` CLI flag makes Node.js print a stack trace at the
time of throwing uncaught exceptions, rather than at the creation of the `Error`
object, if there is any.
This option is not enabled by default because it may affect garbage collection
behavior negatively.

Anna Henningsen [#30025](#30025).

___

The `--disallow-code-generation-from-strings` V8 CLI flag is now whitelisted in
the `NODE_OPTIONS` environment variable.

Shelley Vohr [#30094](#30094).

New crypto APIs

For DSA and ECDSA, a new signature encoding is now supported in addition to the
existing one (DER). The `verify` and `sign` methods accept a `dsaEncoding`
option, which can have one of two values:

* `'der'` (default): DER-encoded ASN.1 signature structure encoding `(r, s)`.
* `'ieee-p1363'`: Signature format `r || s` as proposed in IEEE-P1363.

Tobias Nießen [#29292](#29292).

___

A new method was added to `Hash`: `Hash.prototype.copy`. It makes it possible to
clone the internal state of a `Hash` object into a new `Hash` object, allowing
to compute the digest between updates.

Ben Noordhuis [#29910](#29910).

Dependency updates

libuv was updated to 1.34.0. This includes fixes to `uv_fs_copyfile()` and
`uv_interface_addresses()` and adds two new functions: `uv_sleep()` and
`uv_fs_mkstemp()`.

Colin Ihrig [#30783](#30783).

___

V8 was updated to 7.8.279.23. This includes performance improvements to object
destructuring, RegExp match failures and WebAssembly startup time.
The official release notes are available at https://v8.dev/blog/v8-release-78.

Michaël Zasso [#30109](#30109).

New EventEmitter APIs

The new `EventEmitter.on` static method allows to async iterate over events.

Matteo Collina [#27994](#27994).

___

It is now possible to monitor `'error'` events on an `EventEmitter` without
consuming the emitted error by installing a listener using the symbol
`EventEmitter.errorMonitor`.

Gerhard Stoebich [#30932](#30932).

___

Using `async` functions with event handlers is problematic, because it
can lead to an unhandled rejection in case of a thrown exception.

The experimental `captureRejections` option in the `EventEmitter` constructor or
the global setting change this behavior, installing a
`.then(undefined, handler)` handler on the `Promise`. This handler routes the
exception asynchronously to the `Symbol.for('nodejs.rejection')` method if there
is one, or to the `'error'` event handler if there is none.

Setting `EventEmitter.captureRejections = true` will change the default for all
new instances of `EventEmitter`.

This is an experimental feature.

Matteo Collina [#27867](#27867).

Performance Hooks are no longer experimental

The `perf_hooks` module is now considered a stable API.

legendecas [#31101](#31101).

Introduction of experimental WebAssembly System Interface (WASI) support

A new core module, `wasi`, is introduced to provide an implementation of the
[WebAssembly System Interface](https://wasi.dev/) specification.
WASI gives sandboxed WebAssembly applications access to the
underlying operating system via a collection of POSIX-like functions.

This is an experimental feature.

Colin Ihrig [#30258](#30258).

PR-URL: #31691

Notable changes:

New assert APIs

The `assert` module now provides experimental `assert.match()` and
`assert.doesNotMatch()` methods. They will validate that the first argument is a
string and matches (or does not match) the provided regular expression

This is an experimental feature.

Ruben Bridgewater [#30929](#30929).

Advanced serialization for IPC

The `child_process` and `cluster` modules now support a `serialization` option
to change the serialization mechanism used for IPC. The option can have one of
two values:

* `'json'` (default): `JSON.stringify()` and `JSON.parse()` are used. This is
  how message serialization was done before.
* `'advanced'`: The serialization API of the `v8` module is used. It is based on
  the HTML structured clone algorithm.
  and is able to serialize more built-in JavaScript object types, such as
  `BigInt`, `Map`, `Set` etc. as well as circular data structures.

Anna Henningsen [#30162](#30162).

CLI flags

The new `--trace-exit` CLI flag makes Node.js print a stack trace whenever the
Node.js environment is exited proactively (i.e. by invoking the `process.exit()`
function or pressing Ctrl+C).

legendecas [#30516](#30516).

___

The new `--trace-uncaught` CLI flag makes Node.js print a stack trace at the
time of throwing uncaught exceptions, rather than at the creation of the `Error`
object, if there is any.
This option is not enabled by default because it may affect garbage collection
behavior negatively.

Anna Henningsen [#30025](#30025).

___

The `--disallow-code-generation-from-strings` V8 CLI flag is now whitelisted in
the `NODE_OPTIONS` environment variable.

Shelley Vohr [#30094](#30094).

New crypto APIs

For DSA and ECDSA, a new signature encoding is now supported in addition to the
existing one (DER). The `verify` and `sign` methods accept a `dsaEncoding`
option, which can have one of two values:

* `'der'` (default): DER-encoded ASN.1 signature structure encoding `(r, s)`.
* `'ieee-p1363'`: Signature format `r || s` as proposed in IEEE-P1363.

Tobias Nießen [#29292](#29292).

___

A new method was added to `Hash`: `Hash.prototype.copy`. It makes it possible to
clone the internal state of a `Hash` object into a new `Hash` object, allowing
to compute the digest between updates.

Ben Noordhuis [#29910](#29910).

Dependency updates

libuv was updated to 1.34.0. This includes fixes to `uv_fs_copyfile()` and
`uv_interface_addresses()` and adds two new functions: `uv_sleep()` and
`uv_fs_mkstemp()`.

Colin Ihrig [#30783](#30783).

___

V8 was updated to 7.8.279.23. This includes performance improvements to object
destructuring, RegExp match failures and WebAssembly startup time.
The official release notes are available at https://v8.dev/blog/v8-release-78.

Michaël Zasso [#30109](#30109).

New EventEmitter APIs

The new `EventEmitter.on` static method allows to async iterate over events.

Matteo Collina [#27994](#27994).

___

It is now possible to monitor `'error'` events on an `EventEmitter` without
consuming the emitted error by installing a listener using the symbol
`EventEmitter.errorMonitor`.

Gerhard Stoebich [#30932](#30932).

___

Using `async` functions with event handlers is problematic, because it
can lead to an unhandled rejection in case of a thrown exception.

The experimental `captureRejections` option in the `EventEmitter` constructor or
the global setting change this behavior, installing a
`.then(undefined, handler)` handler on the `Promise`. This handler routes the
exception asynchronously to the `Symbol.for('nodejs.rejection')` method if there
is one, or to the `'error'` event handler if there is none.

Setting `EventEmitter.captureRejections = true` will change the default for all
new instances of `EventEmitter`.

This is an experimental feature.

Matteo Collina [#27867](#27867).

Performance Hooks are no longer experimental

The `perf_hooks` module is now considered a stable API.

legendecas [#31101](#31101).

Introduction of experimental WebAssembly System Interface (WASI) support

A new core module, `wasi`, is introduced to provide an implementation of the
[WebAssembly System Interface](https://wasi.dev/) specification.
WASI gives sandboxed WebAssembly applications access to the
underlying operating system via a collection of POSIX-like functions.

This is an experimental feature.

Colin Ihrig [#30258](#30258).

PR-URL: #31691