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1:39 PM

TC-39 Error code property proposal

Hey all, Just a heads up about https://github.com/tc39/proposal-error-code-property ... It's a

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TC-39 Error code property proposal

Hey all, Just a heads up about https://github.com/tc39/proposal-error-code-property ... It's a

1:39 PM

Fabien Romano, Clemens Backes3

Jul 7

(X64+CET enabled) WASM jump table slot overflow on far jump fallback

Actually, I didn't want to go through the process of https://v8.dev/docs/contribute. Reading CLA,

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(X64+CET enabled) WASM jump table slot overflow on far jump fallback

Actually, I didn't want to go through the process of https://v8.dev/docs/contribute. Reading CLA,

Jul 7

Jul 7

(X64+CET enable) wasm jump table slot overflow on far jump

On OpenBSD amd64 current, using Node 24.18 and Yarn (4.17). Randomly the command 'yarn install

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(X64+CET enable) wasm jump table slot overflow on far jump

On OpenBSD amd64 current, using Node 24.18 and Yarn (4.17). Randomly the command 'yarn install

Jul 7

Michael Achenbach2

Jul 1

Branch cut V8 15.1 on 2026-06-29

Hi, We've officially branched for Chrome version 151. V8 branch: refs/branch-heads/15.1 V8

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Branch cut V8 15.1 on 2026-06-29

Hi, We've officially branched for Chrome version 151. V8 branch: refs/branch-heads/15.1 V8

Jul 1

Attila Szegedi, Leszek Swirski4

Jun 30

Annotating CPU profiler samples with embedder values

Hi Leszek, First of all, thank you for a considered response explaining the forces at work; I

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Annotating CPU profiler samples with embedder values

Hi Leszek, First of all, thank you for a considered response explaining the forces at work; I

Jun 30

Amemiya Riya, Jakob Kummerow3

Jun 26

Replace base::Memset's hand-written loop with std::fill_n?

Hi Jakob, Thanks for the reply. I've uploaded the change to Gerrit. https://chromium-review.

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Replace base::Memset's hand-written loop with std::fill_n?

Hi Jakob, Thanks for the reply. I've uploaded the change to Gerrit. https://chromium-review.

Jun 26

Reve, Camillo Bruni2

Jun 18

Is there a plan to optimize async generators?

Hi, This is on our radar by optimising the lazy-collections jetstream workload which covers some

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Is there a plan to optimize async generators?

Hi, This is on our radar by optimising the lazy-collections jetstream workload which covers some

Jun 18

yahan lu, … shadowing5

Jun 12

I get a warning when Irun 'git cl upload'

It may caused by the VPN that you were using are dirty in their IP address. Consider using a clearer

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I get a warning when Irun 'git cl upload'

It may caused by the VPN that you were using are dirty in their IP address. Consider using a clearer

Jun 12

Jun 12

[snapshot] Proposed fix for deferred off-heap TypedArray snapshot failure

Hi V8 folks, I found a snapshot deserialization failure involving deferred objects and off-heap

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[snapshot] Proposed fix for deferred off-heap TypedArray snapshot failure

Hi V8 folks, I found a snapshot deserialization failure involving deferred objects and off-heap

Jun 12

Conrad Buck, Ben Noordhuis3

Jun 4

Lang design: building no-prototype arrays

Well you sent me down quite a rabbit hole, but yes I was able to confirm what you said -- that

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Lang design: building no-prototype arrays

Well you sent me down quite a rabbit hole, but yes I was able to confirm what you said -- that

Jun 4

Jakob Kummerow2

Jun 1

Branch cut V8 15.0 on 2026-06-01

Hi, We've officially branched to be prepared for the upcoming Chromium version 150. The base of

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Branch cut V8 15.0 on 2026-06-01

Hi, We've officially branched to be prepared for the upcoming Chromium version 150. The base of

Jun 1

May 25

Arrow function in ScriptCompiler::CompileFunction source argument

Hi all, In C++ code we use ScriptCompiler::CompileFunction() member function to compile JS function

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Arrow function in ScriptCompiler::CompileFunction source argument

Hi all, In C++ code we use ScriptCompiler::CompileFunction() member function to compile JS function

May 25

Jakob Kummerow2

May 4

Branch cut V8 14.9 on 2026-05-04

Hi, we have officially branched to be prepared for the upcoming Chrome version 149. The base of the

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Branch cut V8 14.9 on 2026-05-04

Hi, we have officially branched to be prepared for the upcoming Chrome version 149. The base of the

May 4

Apr 24

[Design/Windows] Scripting API to opt into ETW tracing integration for a specific Isolate

A little thing to allow an embedder to integrate with an ETW tracing session for a specific Isolate,

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[Design/Windows] Scripting API to opt into ETW tracing integration for a specific Isolate

A little thing to allow an embedder to integrate with an ETW tracing session for a specific Isolate,

Apr 24

Noa, Erik Corry3

Apr 23

Method on Isolate to check for interrupts

I don't think that's been observed, so I guess my coworker just wrote this part of our code

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Method on Isolate to check for interrupts

I don't think that's been observed, so I guess my coworker just wrote this part of our code

Apr 23

Joyee Cheung, … Leszek Swirski5

Apr 22

GDB & LLDB plugins for v8 via debug_helper

Hi Leszek, Thanks for the feedback, yes I agree they are complementary - with gdbjit integration

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GDB & LLDB plugins for v8 via debug_helper

Hi Leszek, Thanks for the feedback, yes I agree they are complementary - with gdbjit integration

Apr 22

Apr 14

Windows crash: [mutex.cc : 2600] RAW: Check waitp->thread->waitp == nullptr failed: waiting when shouldn't be

Claude found the problem. Attached the patch that fixed the occasional crash. Two related fixes for

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Windows crash: [mutex.cc : 2600] RAW: Check waitp->thread->waitp == nullptr failed: waiting when shouldn't be

Claude found the problem. Attached the patch that fixed the occasional crash. Two related fixes for

Apr 14

ClearScript Developers, … Camillo Bruni5

Apr 11

Failures in "gclient sync" due to HTTP 429 (Too Many Requests)?

This appears to have been resolved. Thank you all! On Tuesday, April 7, 2026 at 10:57:39 AM UTC-4 cbr

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Failures in "gclient sync" due to HTTP 429 (Too Many Requests)?

This appears to have been resolved. Thank you all! On Tuesday, April 7, 2026 at 10:57:39 AM UTC-4 cbr

Apr 11

Ho Cheung, … James Dennett7

Apr 10

Does V8 now allow C++20?

On Fri, Apr 10, 2026 at 2:18 AM Jakob Kummerow <jkum...@chromium.org> wrote: I don't

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Does V8 now allow C++20?

On Fri, Apr 10, 2026 at 2:18 AM Jakob Kummerow <jkum...@chromium.org> wrote: I don't

Apr 10

Abdullah Sarkar, Jakob Kummerow4

Apr 10

Is external contribution possible to a minor Security Report?

The following ran expectedly: https://issues.chromium.org/issues/42201901 https://issues.chromium.org

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Is external contribution possible to a minor Security Report?

The following ran expectedly: https://issues.chromium.org/issues/42201901 https://issues.chromium.org

Apr 10

Apr 8

Naming conflicts when building v8_monolith

I am building a static monolith of v8 14.6 with the following config: gn_args = { is_debug: false,

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Naming conflicts when building v8_monolith

I am building a static monolith of v8 14.6 with the following config: gn_args = { is_debug: false,

Apr 8

Apr 8

Cannot build static libv8 with partition_alloc enabled

I started from the working homebrew recipe for v8 14.6, but after adding : v8_monolithic: true,

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Cannot build static libv8 with partition_alloc enabled

I started from the working homebrew recipe for v8 14.6, but after adding : v8_monolithic: true,

Apr 8

Michael Achenbach2

Apr 2

Branch cut V8 14.8 on 2026-04-02

Hi, We've officially branched to be prepared for the upcoming Chromium version 148. The base of

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Branch cut V8 14.8 on 2026-04-02

Hi, We've officially branched to be prepared for the upcoming Chromium version 148. The base of

Apr 2

Tao Chen, Jakob Kummerow4

Mar 28

[Proposal] Let GC learn business context via SPI: a hybrid Arena + GC memory model for V8

One more thought I want to add, not to argue, but because I think it's worth considering together

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[Proposal] Let GC learn business context via SPI: a hybrid Arena + GC memory model for V8

One more thought I want to add, not to argue, but because I think it's worth considering together

Mar 28

Jakob Kummerow3

Mar 9

Branch cut V8 14.7 on 2026-03-09

Correction: the version is 14.7.173. Sorry for the confusion. On Mon, Mar 9, 2026 at 3:26 PM Jakob

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Branch cut V8 14.7 on 2026-03-09

Correction: the version is 14.7.173. Sorry for the confusion. On Mon, Mar 9, 2026 at 3:26 PM Jakob

Mar 9

Erik Corry, … Toon Verwaest4

Mar 6

Build times for V8

Hi Erik I already lgtm'd the cl but for the record: While jumbo support was dropped, we're

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Build times for V8

Hi Erik I already lgtm'd the cl but for the record: While jumbo support was dropped, we're

Mar 6

Feb 9

Branch cut V8 14.6 on 2026-02-09

Hi, We've officially branched to be prepared for the upcoming Chromium version 146. The base of

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Branch cut V8 14.6 on 2026-02-09

Hi, We've officially branched to be prepared for the upcoming Chromium version 146. The base of

Feb 9

Emily Boarer, … Clemens Backes4

Feb 4

Fuzztesting correctness turboshaft vs liftoff

+1 to a fuzztest then. Having dozens of them is not a problem. If you want to compare Liftoff vs

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Fuzztesting correctness turboshaft vs liftoff

+1 to a fuzztest then. Having dozens of them is not a problem. If you want to compare Liftoff vs

Feb 4

Amemiya Riya, Leszek Swirski2

Jan 28

[Design/Perf] C++ fast path for Array.prototype.flat (2-pass, V8)

Hi Amemiya, This sounds like a reasonable approach, fast-paths for a valid NoElements protector is a

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[Design/Perf] C++ fast path for Array.prototype.flat (2-pass, V8)

Hi Amemiya, This sounds like a reasonable approach, fast-paths for a valid NoElements protector is a

Jan 28

Michael Achenbach2

Jan 12

Branch cut V8 14.5 on 2026-01-12

Hi, We've officially branched to be prepared for the upcoming Chromium version 145. The base of

unread,

Branch cut V8 14.5 on 2026-01-12

Hi, We've officially branched to be prepared for the upcoming Chromium version 145. The base of

Jan 12

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