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Point WEBKIT_VERSION at the preview build of oven-sh/WebKit#614, which merges upstream WebKit main at ccdcb8a026 into the fork. Upstream 64168e4d90 adds GlobalObjectMethodTable::moduleTypeIsAllowed ahead of moduleLoaderImportModule, so the five method tables get a nullptr slot for it. The new test pins four engine fixes from the range and the host-defined import attribute path.
The serialized bytecode of the three corpus libraries that contain async functions and generators (happy-dom, undici, libraries.js) changed with upstream 4fa7b55ae4, which stops emitting tail calls in generator and async function bodies. CI produced the same three hashes on all eleven platforms, which is the update-the-snapshot case the test describes.
Its tree is identical to the preview build CI ran against (autobuild-preview-pr-614-3db1d92e).
…ade-webkit-50320fd3b3
WTF::String(std::span<const char>) is private as of upstream 74b519d7f9. process.release.sourceUrl builds its string with String::fromLatin1.
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Status: the diff is ready and CI is green on
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: ASSERTIVE Plan: Essentials Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 0 remain after this review. WalkthroughThe change updates the WebKit preview version, adjusts release URL string conversion, and adds concurrent regression tests for buffer operations, multiplication, built-ins, escaping, async generators, and module import attributes. ChangesWebKit upgrade
Suggested reviewers: Priority: ➖ Normal Merge Risk: 🟡 Moderate · up to The branch still uses a temporary WebKit preview pin. Merge should wait until the fork commit containing the required changes is available and pinned. 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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In `@scripts/build/deps/webkit.ts`:
- Line 6: Update the WEBKIT_VERSION constant from the provisional autobuild
preview identifier to the immutable WebKit fork merge commit SHA
73feb01375e7b318afd264bc33f939a79eac95c4, or use the final merge commit once
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scripts/build/deps/webkit.tssrc/jsc/bindings/BunProcess.cppsrc/jsc/bindings/NodeVM.cppsrc/jsc/bindings/ZigGlobalObject.cppsrc/runtime/bake/BakeGlobalObject.cpptest/bundler/bundler_bytecode_portable.test.tstest/js/bun/jsc/webkit-upgrade-50320fd3b3.test.tstest/js/bun/jsc/webkit-upgrade-ccdcb8a026.test.ts
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Beyond the inline finding, I confirmed the moduleTypeIsAllowed slot was inserted at the same position in all five GlobalObjectMethodTable initializers (the three in ZigGlobalObject.cpp, NodeVM, and Bake — no other files in src/ define one), and grepped the repo for the old WebKit hash dfd69644… — no stale duplicates remain. The String::fromLatin1(Bun__githubURL) swap is equivalent for a null-terminated ASCII URL.
Extended reasoning...
Checked whether any sibling GlobalObjectMethodTable aggregate initializer was missed (BunAnalyzeTranspiledModule.cpp and NodeHTTP.cpp reference the type but do not define a table), whether the old WEBKIT_VERSION value survives elsewhere in the tree (it does not), and that String::fromLatin1 on the null-terminated Bun__githubURL is behavior-preserving vs. the removed std::span constructor. The new tests follow harness conventions (tempDir, await using, concurrent drain of stdout/stderr/exited, output asserted before exit code). The remaining blocker is the ephemeral preview-PR pin already flagged inline.
| * From https://github.com/oven-sh/WebKit releases. | ||
| */ | ||
| export const WEBKIT_VERSION = "dfd696443b9ba87c4f516d1c724f0abacdd8768a"; | ||
| export const WEBKIT_VERSION = "autobuild-preview-pr-623-73feb013"; |
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🔴 WEBKIT_VERSION is pinned to the ephemeral preview tag "autobuild-preview-pr-623-73feb013" (an unmerged-PR autobuild), not a merged oven-sh/WebKit SHA — REVIEW.md's Dependencies & vendoring rule ("Never merge a pin to an ephemeral artifact") blocks this. Once oven-sh/WebKit#623 is merged or its preview artifacts are pruned, every fresh clone/CI checkout fails to fetch WebKit and cannot build. Fix: before merge, replace with the merged commit SHA (73feb01375e7b318afd264bc33f939a79eac95c4 or the merge commit of #623) and confirm prebuilt tarballs exist for every platform × flavor. The PR description already flags this as a pre-merge TODO.
Extended reasoning...
scripts/build/deps/webkit.ts:6 sets export const WEBKIT_VERSION = "autobuild-preview-pr-623-73feb013". This value feeds the prebuilt dep fetch (per scripts/build/CLAUDE.md, WebKit is a prebuilt BuildSpec that downloads a release tarball keyed by this constant from oven-sh/WebKit releases). Preview autobuild tags are ephemeral: they are per-PR artifacts that are garbage-collected after the PR merges or closes. Once that happens, bun bd on a fresh checkout hits a 404 during the WebKit fetch step and the build fails for every developer and CI lane. On the base branch WEBKIT_VERSION is a merged SHA (dfd696443b9ba87c4f516d1c724f0abacdd8768a) whose artifacts are permanent, so this is a regression the diff introduces. .claude/docs/landing-prs.md (Dependencies & vendoring) explicitly names this: "Never merge a pin to an ephemeral artifact (preview tags, unmerged-PR builds) — swap to the merged upstream SHA and verify prebuilt artifacts exist for every platform × flavor before merge." The author acknowledges this in the PR body but the pin is still in the diff as-is.
Verification: normal — acknowledged in diff: the PR description states "WEBKIT_VERSION points at the preview build autobuild-preview-pr-623-73feb013 ... It must be bumped before this PR merges", and that claim is accurate but does not resolve the hazard. /home/claude/bun/scripts/build/deps/webkit.ts:6 now reads export const WEBKIT_VERSION = "autobuild-preview-pr-623-73feb013";, replacing the base's…
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Agreed, and this PR must not merge with the preview tag. It is the planned intermediate state: the fork publishes an autobuild-<sha> release only for commits on its main, so there is nothing permanent to pin until oven-sh/WebKit#623 lands. Once it does, the pin moves to the fork main commit (the merge commit of #623, or 73feb01375e7b318afd264bc33f939a79eac95c4 if the branch is fast-forwarded), after a check that all 42 tarballs exist. This thread stays open until that push.
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This upgrade needs #42297 first, like #42177. The range contains WebKit 320788@main (d5ba0ecec9). #42297 bounds the walk. It targets |
…ade-webkit-50320fd3b3 # Conflicts: # scripts/build/deps/webkit.ts # test/bundler/bundler_bytecode_portable.test.ts
…ade-webkit-50320fd3b3
The fork branch now contains the fork's main (cf1b36ec8703), which bun main pins since #42319.
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Updated 1:13 PM PT - Sep 11th, 2026
✅ @robobun, your commit a56172a488368771011d78a3d25b0dd439812b1f passed in 🧪 To try this PR locally: bunx bun-pr 42267That installs a local version of the PR into your bun-42267 --bun |
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#42666 upgrades to upstream |
### Problem - `CronExpression::next()` (`src/runtime/api/cron_parser.rs:250`) converts each candidate day to a calendar date through JSC. Nothing stops the walk at the end of the Date range. JSC converts nothing more than one day past it. - Before #42319, a debug build of `main` aborted: `Bun.cron.parse("0 0 1 1 *", 8.64e15)` gave `ASSERTION FAILED: year >= minYear && year <= maxYear` at `PlainGregorianDateTime.h(91)`. A release build returned `null`. - #42319 (merged, 6a92015) moved `main` to a WebKit where the conversion returns an all-zero date. The year goes back to 0, the 8-year bound never trips, and `Bun.cron.parse("0 0 30 2 *", new Date(8.64e15 - 86400000 * 400))` never returns. `main` and the canary hang on this call today. ### Fix - `next()` returns `None` when the candidate day is past +275760-09-13. Every zone offset is smaller than one day, so no instant on a later wall-clock day fits in a Date. - `next()` also returns `None` for a `from` outside the Date range (fake timers can set the scheduler's clock to any number). It skips a candidate that resolves past 8.64e15, so `cron_parse` needs no clamp. - Verified: `test/js/bun/cron/cron-parse.test.ts`. The 2 new tests fail without the fix and pass with it, on `main` before and after #42319 (6b394bf and 158ff6c). Also ran the rest of `test/js/bun/cron/`. - Self-reviewed: 7 points raised, 4 addressed. 3 are about #42177, #42267 and #36894 and are comments there. ### Background - `next()` walks wall-clock time forward from `from`, day by day, until all five fields match. - 8.64e15 ms is +275760-09-13T00:00:00Z, the largest time value a `Date` holds. - #42319 merged before this PR. `main` has the endless loop until this PR merges. <details><summary>Notes</summary> **Upstream change.** WebKit 320788@main (d5ba0ecec9, bug 323443) changed `DateCache::computeGregorianDateTime` in `JSDateMath.cpp` from `if (!std::isfinite(ms)) return { };` to `if (!canNarrowToInt64Milliseconds(ms)) return { };`, where `canNarrowToInt64Milliseconds(ms)` is `isfinite(ms) && abs(ms) <= maxECMAScriptTime + msPerDay`. `Bun__msToGregorianDateTime` passes the empty value through as year 0, month 1, day 0, weekday 0. With year 0 the walk climbs about 100 million day steps back to year 275760, gets year 0 again, and repeats. **On `main` before #42319 (WebKit dfd696443b, debug+ASAN build).** These calls abort with the `PlainGregorianDateTime` assertion: `Bun.cron.parse("0 0 1 1 *", 8.64e15)`, `Bun.cron.parse("0 0 30 2 *", new Date(8.64e15 - 86400000 * 400))` with and without `{ tz: "UTC" }`, and `Bun.cron.parse("* * * * *", 8.64e15, { tz: "UTC" })`. The assertion fires inside the `ms_to_gregorian_date_time_utc` call that this PR bounds, when the walk reaches year 275761. Bun 1.4.3 (release) returns `null` for all of them. `* * * * *` from 8.64e15 with a named zone takes 1 to 4.6 s there, because it walks 8 years one minute at a time. With this PR the walk ends after at most two days. **Proof on both WebKit versions.** `bun bd test test/js/bun/cron/cron-parse.test.ts`, with `src/` at the base and then at this commit. - `main` (6b394bf): 23 pass and 2 fail, then 25 pass. The parse test fails with exit code 134 and the assertion text. The scheduler test prints `scheduled` for both clock values. - Head of #42177 (676b168, WebKit 4b9ff9959a) with this commit on top: 23 pass and 2 fail, then 25 pass. Both tests time out and bun:test kills the child. - `main` after #42319 (158ff6c, WebKit cf1b36ec8703) with this branch rebased on it: 23 pass and 2 fail, then 25 pass. Both tests time out and bun:test kills the child. **Probe.** 29 calls, each in a child process with a 20 s limit, on the debug build of 676b168 with and without the day bound, and on bun 1.4.3. Inputs: `* * * * *`, `0 0 1 1 *`, `0 0 30 2 *`, `0 0 13 9 *`, `0 0 14 9 *`, `0 12 13 9 *` from 8.64e15, 8.64e15 - 1 minute, 8.64e15 - 10 days, 8.64e15 - 400 days and -8.64e15, in local time (TZ=UTC), `UTC`, `America/New_York` and `Asia/Tokyo`. Without the bound 10 calls hang. With the bound every result is equal to the 1.4.3 result. **Every conversion in `next()` is now inside the window that JSC converts.** `from` is inside the Date range. The noon of each day that the walk can reach is at most 8.64e15 + 12 h. `resolve_local_match` probes at most 121 minutes past `from`. The lower end needs no bound, because the walk only moves forward. The bound keeps +275760-09-13 itself, so the last minute of the range still matches in `Pacific/Kiritimati` (UTC+14, test row `0 14 13 9 *`). **A candidate on the last day can resolve past 8.64e15.** The local path returns a value above 8.64e15. The named-zone path returns NaN. `next()` skips both and continues to the end of that day (at most 1440 more steps). So `next()` never returns a value outside the Date range. Before, `cron_parse` mapped such a value to `null`, but the scheduler armed a timer for it: with the clock at exactly 8.64e15, `Bun.cron("* * * * *", ...)` scheduled a job. Now it throws `has no future occurrences`, the same as a named zone. **Test design.** Both tests spawn a child, because a walk that does not stop spins in native code and cannot be interrupted. They are not concurrent: bun:test kills the children of a timed-out test only when the test is not concurrent. The `timeout` and `killSignal` on the child are the kill switch for CI, where the per-test timeout is 90 s or more. **Timing test.** "impossible day/month (Feb 30) returns null quickly" asserts under 50 ms. It fails on a debug+ASAN build without this PR (159 ms). The first date conversion in a process costs about 150 ms there, and a warm call takes 2 ms. The test now makes one call before it starts the clock. #36894 has the same edit. **Relation to #36894.** #36894 is closed in favor of this PR. It maps a match past 8.64e15 to `None` inside `next()`, removes the clamp in `cron_parse`, and guards the year in `Bun__gregorianDateTimeToMSInZone`. This PR now does the first two. The year guard is not needed, because the walk cannot reach year 275761. #36894 does not bound the day walk, so it does not stop the loop on the new WebKit. Its `{ tz }` boundary rows are part of the new parse test here, and they pass. **Not changed.** `Cookie.cpp:261` also calls `msToGregorianDateTime`. On the new WebKit `new Bun.Cookie("a", "b", { expires: 1e13 }).toString()` prints `Expires=Sun, 00 Jan 0000 00:00:00 GMT`. With the old WebKit it printed `Sun, 20 May 318857 17:46:40 GMT`. Both are outside the Date range, and neither hangs. `toISOString` in `wtf-bindings.cpp` only receives the time value of a `Date` or the current time. </details> <!-- robobun:evidence:begin --> --- **[human-review]** gate passed · iteration 0 · 3 files touched <details><summary>fails on main (without fix)</summary> ```console ASAN without fix: 2 FAILED $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/bun/cron/cron-parse.test.ts bun test v1.4.3 (4ff9193) test/js/bun/cron/cron-parse.test.ts: (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > impossible day/month (Feb 30) returns null quickly [236.60ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > Feb 29 finds next leap year [1659.45ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > weekday matching uses local day-of-week [1741.19ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > strictly-after: from = exact match returns the next occurrence [1887.91ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 1-7 means Mon-Sun (every day) [1758.25ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > DOM/DOW OR semantics when both restricted [1844.78ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 6-7 means Sat-Sun [1565.94ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > scalar 7 still means Sunday [1374.75ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 5-7 means Fri-Sun [1793.66ms] (pass) Bun.cron.parse — w ... (truncated) release without fix: 2 FAILED bun test v1.4.3-canary.1 (4ff9193) test/js/bun/cron/cron-parse.test.ts: (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > impossible day/month (Feb 30) returns null quickly [5.77ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > weekday matching uses local day-of-week [25.21ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > Feb 29 finds next leap year [23.54ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 1-7 means Mon-Sun (every day) [24.17ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > DOM/DOW OR semantics when both restricted [25.06ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > strictly-after: from = exact match returns the next occurrence [35.13ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 5-7 means Fri-Sun [61.49ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 0-7 means every day [63.62ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > scalar 7 still means Sunday [65.85ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 6-7 means Sat-Sun [70.84ms] (pass) Bun.cron.parse — invalid `from` argument > throws for out-of-range/non-finite ms: 1e+300 [0.20ms] (pass) Bun ... (truncated) ``` </details> <details><summary>passes on PR (with fix)</summary> ```console ASAN with fix: all passed $ BUN_DEBUG_QUIET_LOGS=1 bun scripts/build.ts --profile=debug --quiet test "--reporter=junit" "--reporter-outfile=/tmp/pr_gate.xml" test/js/bun/cron/cron-parse.test.ts bun test v1.4.3 (4ff9193) test/js/bun/cron/cron-parse.test.ts: (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > impossible day/month (Feb 30) returns null quickly [201.36ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > Feb 29 finds next leap year [1469.26ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > strictly-after: from = exact match returns the next occurrence [1652.81ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > DOM/DOW OR semantics when both restricted [1462.10ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 1-7 means Mon-Sun (every day) [1537.11ms] (pass) Bun.cron.parse — algorithm (pinned TZ=UTC) > weekday matching uses local day-of-week [1977.03ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 5-7 means Fri-Sun [1813.74ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > scalar 7 still means Sunday [1615.41ms] (pass) Bun.cron.parse — weekday 7 = Sunday in ranges > 6-7 means Sat-Sun [1781.97ms] (pass) Bun.cron.parse — w ... (truncated) release with fix: all passed $ bun scripts/build.ts --profile=release [configured] bun-profile → bun (stripped) in 840ms (unchanged) ninja: Entering directory `/workspace/bun/build/release' [1/6] gen generated_host_exports.rs generated_host_exports.rs: 122 exports (host=5, lazy=10, generic=107, rust=0); 243 extern-C blocks audited [1/6] cargo bun_runtime → libbun_runtime.a ^[[1m^[[92m Compiling^[[0m bun_core v0.0.0 (/workspace/bun/src/bun_core) ^[[1m^[[92m Compiling^[[0m bun_errno v0.0.0 (/workspace/bun/src/errno) ^[[1m^[[92m Compiling^[[0m bun_ptr v0.0.0 (/workspace/bun/src/ptr) ^[[1m^[[92m Compiling^[[0m bun_boringssl_sys v0.0.0 (/workspace/bun/src/boringssl_sys) ^[[1m^[[92m Compiling^[[0m bun_safety v0.0.0 (/workspace/bun/src/safety) ^[[1m^[[92m Compiling^[[0m bun_base64 v0.0.0 (/workspace/bun/src/base64) ^[[1m^[[92m Compiling^[[0m bun_cares_sys v0.0.0 (/workspace/bun/src/cares_sys) ^[[1m^[[92m Compiling^[[0m bun_zlib_sys v0.0.0 (/workspace/bun/src/zlib_sys) ^[[1m^[[92m Compiling^[[0m bun_zstd v0.0.0 (/workspace/bun/src/zstd) ^[[1m^[[92m Compiling^[[0m bun_paths v0.0.0 (/workspace/bun/src/paths) ^[[1m^[[92m Compiling^[[0m bun_collections v0.0.0 (/workspace/bun/src/collections) ^[[1m^[[92m Compiling ... (truncated) ``` </details> <details><summary>diff hotspot</summary> ``` src/runtime/api/cron.rs | 7 +-- src/runtime/api/cron_parser.rs | 25 +++++++--- test/js/bun/cron/cron-parse.test.ts | 99 +++++++++++++++++++++++++++++++++++++ 3 files changed, 119 insertions(+), 12 deletions(-) ``` </details> **gate history** · 1 passed · 0 rejected · iteration 0 <details><summary>evidence per changed file</summary> ``` file reads edits tests src/runtime/api/cron.rs 3 2 30 src/runtime/api/cron_parser.rs 6 7 30 test/js/bun/cron/cron-parse.test.ts 6 8 29 ``` </details> <!-- robobun:evidence:end -->
2 participants
WebKit upgrade: upstream changes
Range:
ccdcb8a026..50320fd3b3(93 upstream commits, 2026-09-09 to 2026-09-10, 14 touch JavaScriptCore, WTF, bmalloc or cmake). Fork PR: oven-sh/WebKit#623.Main already pins the fork's current main,
cf1b36ec8703(#42319: theccdcb8a026upstream merge plus oven-sh/WebKit#522). This PR adds the next upstream range on top. The diff is one line inBunProcess.cpp, two test files and the pin.Before this merges
e1831791003d) and merges cleanly.WEBKIT_VERSIONthen moves from the preview tagautobuild-preview-pr-623-e1831791(42 tarballs, every platform built, same tree that Upgrade to upstream WebKit 50320fd3b3 WebKit#623 will merge) to the fork main commit that contains Upgrade to upstream WebKit 50320fd3b3 WebKit#623, after a check that all 42 tarballs exist.Not a blocker for this PR, but related: #42297 (cron
next()bound). Upstreamd5ba0ecec9is part of the range that #42319 brought to main, and it makesBun.cron.parseloop forever near the end of the Date range without #42297.Notes for Bun
74b519d7f9makesWTF::String(std::span<const char>)private. Bun had one caller:process.release.sourceUrlinBunProcess.cpp. It now callsString::fromLatin1(Bun__githubURL), which compiles against the old and the new WebKit. This is the only Bun source change the range needs.process.test.jsalready checks the value.7bd7b6dfadprepares to retypeString::utf8()to returnUTF8CString. Nothing breaks in this range. After the follow-up lands,utf8().data()returnsconst char8_t*. Bun has 15 directutf8().data()call sites in 9 files that will then needlegacyCStringPointer().JSType.hdid not change. The WebCore bindings generator did not change. The release tarball names did not change.bundler_bytecode_portable.test.tsencoder output is identical on every platformpasses locally against the merged tree with a raised timeout.test/js/bun/jsc/webkit-upgrade-50320fd3b3.test.tspins223bd0faee(a detachedArrayBuffer'sresize(-1)throws RangeError, it threw TypeError before) and runs the-n * mshapes that41ec81351blowers differently on ARM64 through the JIT tiers. One of its three cases fails on the current pin. The branch also carriestest/js/bun/jsc/webkit-upgrade-ccdcb8a026.test.tsfrom Upgrade WebKit to ccdcb8a026 #42177, which was closed in favour of Upgrade WebKit to cf1b36ec8703 #42319 without its test file. It pins five behaviours of the previous range and passes on main.wtf/URLParser.cpp,wtf/UUID.cpp). Upgrade to upstream WebKit 50320fd3b3 WebKit#623 describes them and the JSC-side verification (jscdebug + ASAN build, the new JSTests, 316 RegExp stress tests with the same 4 failures as the current pin).6a92015fc8) built withbun run build:localagainste1831791003d(fork main plus the upstream merge). It builds and links.webkit-upgrade-50320fd3b3.test.ts3 of 3,webkit-upgrade-ccdcb8a026.test.ts5 of 5,test/js/node/vm/vm.test.ts,test/js/web/url/url.test.tsand theprocess.releasetest pass.bun bdagainst theautobuild-preview-pr-623-e1831791debug-asan tarball: both upgrade test files 8 of 8,import-meta.test.js34 of 34. On main's pin (cf1b36ec8703) the same two files give 7 pass and 1 fail (detached.resize(-1)throws TypeError).bun run build:localagainst the merged tree andbun bdagainst the preview debug-asan tarballs (the first one before main moved tocf1b36ec8703, the second one after):test/js/bun/jsc/(all files butdomjit.test.ts),test/js/web/url/url.test.ts,test/js/web/workers/structured-clone.test.ts,test/js/node/process/process.test.js, and a side-by-side output diff of theIntl,JSON.stringifyandtoExponentialpaths that74b519d7f9touched. No failures other thandomjit.test.tstimeouts and aprocess.env.USERcheck, which fail the same way on a debug build of the current pin.Needs an embedder-side change
74b519d7f9WTF::String(std::span<const char>)is now private, next toString(const char*), becausecharcarries no encoding. Callers name the encoding:String::fromLatin1(std::span<const char>)(new overload),String(std::span<const Latin1Character>),String::fromUTF8(...)orString(ASCIILiteral). In the same commitWTF::enumName()andWTF::enumTypeName()(wtf/EnumTraits.h) returnASCIILiteralinstead ofstd::span<const char>, so callers testisEmpty()instead ofempty(). https://bugs.webkit.org/show_bug.cgi?id=3236507bd7b6dfadCStringgainslegacyCStringPointer(), which returns the sameconst char*asdata(), and every upstreamutf8().data()call site moves to it.CStringWithEncoding::characters()(theconst char*accessor ofUTF8CStringandASCIICStringfrom5f14e32e57) is renamed tolegacyCStringPointer(). No type changes yet. This is the mechanical half of retypingString::utf8()to returnUTF8CString. After that follow-up lands,utf8().data()returnsconst char8_t*and onlylegacyCStringPointer()keeps returningconst char*. https://bugs.webkit.org/show_bug.cgi?id=323722Runtime and builtins
223bd0faeeArrayBuffer.prototype.resizeandSharedArrayBuffer.prototype.growconvert the new length withtoIndexinstead ofToIntegerOrInfinityplus a cast tosize_t, which was undefined for a value such as1e20. A length above 2^53 - 1 or a negative length now throws RangeError before the detached check, sodetached.resize(-1)throws RangeError where it used to throw TypeError. https://bugs.webkit.org/show_bug.cgi?id=323440c194b75cdespeculationFromString()(bytecode/SpeculatedType.h, used by the@idWithProfilebytecode intrinsic) takes aStringViewand looks the name up in aSortedArrayMapinstead of a chain ofstrncmpprefix tests. The rest of the commit is review follow-up for7bd7b6dfadin the Wasm debugger tests. https://bugs.webkit.org/show_bug.cgi?id=323841RegExp (Yarr)
e19f57a779RegExp::deleteCode()no longer clearsm_atomandm_specificPattern. They depend only on the pattern, likem_numSubpatterns.RegExpCachedResult::lastResult()readsRegExp::atom()to reify the position of a cached one-character global match. AfterVM::deleteAllCode()cleared the atom it searched for U+0000 instead, soRegExp.leftContext,RegExp.rightContextandRegExp.lastMatchcould be wrong (a debug build asserts). Bun callsdeleteAllCodeon hot reload and when a debugger attaches. https://bugs.webkit.org/show_bug.cgi?id=323838JIT (B3)
41ec81351bB3LowerToAirmatchesMul(Neg(n), m)andMul(n, Neg(m))and emits oneMultiplyNeg(ARM64MNEG/FNMUL) when theNeghas no other user. This is the shape-n * mparses to. The floating point form used to emitfnegplusfmul. About 1.5x on themul-negated-operand-chainmicrobenchmark. No effect on x86_64, which has no such instruction form. https://bugs.webkit.org/show_bug.cgi?id=323150WebAssembly
0d81375a0fJSWebAssemblyArray::fillof reference elements stores through the newgcSafeMemfill()(heap/GCMemoryOperations.h, next togcSafeZeroMemory) and then runs one write barrier, likearray.copy. The old loop of plain stores could be lowered to sub-8-byte writes, and the concurrent marker could read a torn value. https://bugs.webkit.org/show_bug.cgi?id=32362892a274ec73The Wasm debuggerBreakpointManagerstoresRef<Breakpoint>in its map and returnsRefPtr<Breakpoint>, so a breakpoint pointer no longer goes stale when the map rehashes.BreakpointbecomesThreadSafeRefCounted. Debugger only. https://bugs.webkit.org/show_bug.cgi?id=323910WTF and bmalloc
86f52ba2f2libpas:pas_runtime_config::enabled(MTE enablement, a bool where 0 meant either "not initialized" or "off") becomes the tri-statemte_state.pas_mte_is_mte_enabled()is now an inlineable relaxed load that falls back to the renamedpas_mte_is_mte_enabled_slow()only when the state is not initialized. Darwin arm64e only. https://bugs.webkit.org/show_bug.cgi?id=32382050320fd3b3wtf/MathExtras.hgainsabsoluteValueAsUnsigned(), anabsthat is defined for the most negative value of a signed type. The only adopter is WebCore. https://bugs.webkit.org/show_bug.cgi?id=2573691455983c9dwtf/PlatformHave.hdefinesHAVE_AVPLAYER_DISCONNECTEDFROMSYSTEMAUDIOfor the iOS family 27.0 SDKs. https://bugs.webkit.org/show_bug.cgi?id=3237728eb608658bUnifiedWebPreferences.yamlgains a WebRTC DNS preference. No JSC effect. https://bugs.webkit.org/show_bug.cgi?id=323606Build system and platform
b1865b2d63Swift compiler flags for CMake move fromOptionsCocoa.cmakeandWebKitMacros.cmakeinto a newSource/cmake/WebKitSwiftFlags.cmakeand are aligned with the Xcode build. Swift targets only. https://bugs.webkit.org/show_bug.cgi?id=322750bc5bc3c2d6WebKitMacros.cmakenormalizes MSVC-style/Ddefinitions to-Dwhen it forwards them to the Swift clang importer on Windows. Swift targets only. https://bugs.webkit.org/show_bug.cgi?id=323791WebCore-only or no effect on JSC embedders
The other 79 commits in the range touch WebCore, WebKit, WebGPU, LayoutTests or tooling only.
[policy-decision:webkit] gate passed · iteration 2 · 4 files touched
fails on main (without fix)
passes on PR (with fix)
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gate history · 1 passed · 0 rejected · iteration 2
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