From d26d0640829460f9a9e348b7783e0a4844123425 Mon Sep 17 00:00:00 2001
From: Pedro Pontes <ppontes@gmail.com>
Date: Thu, 21 Apr 2022 10:24:26 +0200
Subject: [PATCH] chore: cherry-pick e42dbcdedb7a from v8 (#33831)

* chore: cherry-pick e42dbcdedb7a from v8

* chore: update patches

Co-authored-by: PatchUp <73610968+patchup[bot]@users.noreply.github.com>
Co-authored-by: Electron Bot <electron@github.com>
---
 patches/v8/.patches                       |  1 +
 patches/v8/cherry-pick-e42dbcdedb7a.patch | 37 +++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 patches/v8/cherry-pick-e42dbcdedb7a.patch

diff --git a/patches/v8/.patches b/patches/v8/.patches
index bed5d16a100ed..cc7b41f0dadc8 100644
--- a/patches/v8/.patches
+++ b/patches/v8/.patches
@@ -24,4 +24,5 @@ cherry-pick-c46fb3a15ec2.patch
 cherry-pick-a1427aad7cef.patch
 cherry-pick-f599381978f2.patch
 cherry-pick-f546ac11eec7.patch
+cherry-pick-e42dbcdedb7a.patch
 cherry-pick-b2d3ef69ef99.patch
diff --git a/patches/v8/cherry-pick-e42dbcdedb7a.patch b/patches/v8/cherry-pick-e42dbcdedb7a.patch
new file mode 100644
index 0000000000000..0a7d55ed9c554
--- /dev/null
+++ b/patches/v8/cherry-pick-e42dbcdedb7a.patch
@@ -0,0 +1,37 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Brendon Tiszka <btiszka@gmail.com>
+Date: Fri, 18 Mar 2022 01:32:54 -0400
+Subject: Merged: Update write barrier when storing HeapNumber to last index.
+
+(cherry picked from commit bdc4f54a50293507d9ef51573bab537883560cc8)
+
+No-Try: true
+No-Presubmit: true
+No-Treechecks: true
+Bug: chromium:1307610
+Change-Id: I60aaa0e58e13b705b5eff4b57411a0ad4a2e9b3f
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3534849
+Reviewed-by: Jakob Gruber <jgruber@chromium.org>
+Commit-Queue: Jakob Gruber <jgruber@chromium.org>
+Cr-Original-Commit-Position: refs/heads/main@{#79538}
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3565716
+Reviewed-by: Patrick Thier <pthier@chromium.org>
+Commit-Queue: Jakob Linke <jgruber@chromium.org>
+Cr-Commit-Position: refs/branch-heads/10.0@{#18}
+Cr-Branched-From: 6ea73a738c467dc26abbbe84e27a36aac1c6e119-refs/heads/10.0.139@{#1}
+Cr-Branched-From: ccc689011280419901e6ee42cae39980c0e96030-refs/heads/main@{#79131}
+
+diff --git a/src/regexp/regexp-utils.cc b/src/regexp/regexp-utils.cc
+index 1e72a124c95729ebf9c4a7caed52b5551408a525..9ddf82e95a7c07bbb7a529167bbf30058a1cbd14 100644
+--- a/src/regexp/regexp-utils.cc
++++ b/src/regexp/regexp-utils.cc
+@@ -49,7 +49,8 @@ MaybeHandle<Object> RegExpUtils::SetLastIndex(Isolate* isolate,
+   Handle<Object> value_as_object =
+       isolate->factory()->NewNumberFromInt64(value);
+   if (HasInitialRegExpMap(isolate, *recv)) {
+-    JSRegExp::cast(*recv).set_last_index(*value_as_object, SKIP_WRITE_BARRIER);
++    JSRegExp::cast(*recv).set_last_index(*value_as_object,
++                                         UPDATE_WRITE_BARRIER);
+     return recv;
+   } else {
+     return Object::SetProperty(