JavaScript/Dashboard

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Security bugs

• sec-crit bugs
• sec-high bugs

B2G 1.4 (Dolphin) Blockers (Gecko 30)

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

B2G 2.0 Blockers (Gecko 32)

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

B2G 2.1 Blockers (Gecko 34)

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

Beta Tracking Bugs (Firefox 128)

Firefox

Currently in BETA channel
Moves to RELEASE week of July 9, 2024

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

Aurora Tracking Bugs (Firefox 54)

Firefox

Currently in AURORA channel
Moves to BETA week of July 9, 2024

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

Nightly Tracking Bugs (Firefox 129)

Firefox

Currently in NIGHTLY channel
Moves to BETA week of July 9, 2024

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

fuzzblockers

No results.

0 Total; 0 Open (0%); 0 Resolved (0%); 0 Verified (0%);

topcrashes

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
719114	Crash in [@ js::GCMarker::processMarkStackTop ] from heap corruption	[unactionable], ShutDownKill[tbird crash]	crash, stalled, topcrash-android-armv7, topcrash-mac, topcrash-win	--	NEW
787879	Crashes while sweeping	[js:p1][unactionable], qa-not-actionable	crash, regression, stalled, topcrash, topcrash-mac, topcrash-win	--	NEW
858032	[meta] crashes in EnterBaseline / EnterJit	[file separate bugs for specific reproducible cases][unactionable], ShutDownKill	crash, meta, topcrash, topcrash-startup, topcrash-win	P5	NEW
1472062	[meta] OOM crash evicting the nursery: "Failed to allocate new chunk during GC"	[MemShrink:P2][tbird crash][qa-not-actionable]	crash, meta, top50, topcrash	P3	NEW
1541905	Crash in [@ js::gc::StoreBuffer::MonoTypeBuffer<T>::trace]		crash, regression, stalled, topcrash	P3	NEW
1799300	Crash in [@ js::gc::CellWithTenuredGCPointer<T>::headerPtr]		crash, regression, stalled, topcrash, topcrash-startup	P5	NEW
1801916	Crash in [@ js::frontend::ParseNode::getKind]		crash, topcrash	P3	NEW
1824154	Intermittent /html/canvas/offscreen/shadows/2d.shadow.pattern.transparent.2.html | application crashed [@ js::NativeObject::hasFixedElements] | After Assertion failure: unshiftedElements() == fixedElements()		crash, intermittent-failure, topcrash	P3	NEW
1876939	Crash in [@ JS::Value::isGCThing]		crash, topcrash, topcrash-startup	P1	NEW
1917738	Crash in [@ js::gc::MarkBitmap<T>::markIfUnmarkedAtomic]		crash, topcrash	P5	NEW
1948635	Intermittent MOZ_ASSERT((value & RESERVED_MASK) == 0) [@ js::gc::HeaderWord::get] | single tracking bug		crash, intermittent-failure, intermittent-testcase, topcrash, topcrash-startup	P5	NEW

11 Total; 11 Open (100%); 0 Resolved (0%); 0 Verified (0%);

Perf Regressions

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
969765	Regression with javascript performance (Firefox is 1.4x slower than Chrome)		perf, regression	P3	NEW
1152893	[meta] Investigate remaining performance regressions in promises due to async stacks		meta, perf, regression	--	NEW
1190723	BitcoinBench perf regressions on SHA, Scrypt, AddressChain, and AES tests		perf, regression	P3	NEW
1833078	2.02% Base Content Heap Unclassified (Windows) regression on Mon May 8 2023		perf, perf-alert, regression	P3	ASSIGNED	Alex Thayer [:alexical] (she/her)
1834526	Large fetch in Web Worker in extension causes hang in Firefox extension process		perf:resource-use, perf:responsiveness, regression, reproducible	P3	NEW
1913159	0.28 - 0.27% Base Content JS / Base Content JS (OSX, Windows) regression on Wed August 7 2024		perf, perf-alert, regression	P3	NEW

6 Total; 6 Open (100%); 0 Resolved (0%); 0 Verified (0%);

P1 Bugs

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
1450787	Decide what to do with the javascript.options.gc_on_memory_pressure pref on Android	[fxdroid] [foundation] [group1][android-tab-reloading]	leave-open	P1	ASSIGNED	Kaya [:kaya]
1670403	[meta] Cache Stencils across Documents		meta	P1	NEW
1707066	[meta] Improve performance on ReactDOM		meta	P1	NEW
1728273	USER_INACTIVE GCs do not collect all zones		perf-alert	P1	REOPENED	Steve Fink [:sfink] [:s:]
1729502	[meta] SpiderMonkey Site Issues		meta	P1	NEW
1729503	[meta] SpiderMonkey Intermittents		meta	P1	NEW
1729504	[meta] SpiderMonkey Crashes		meta	P1	NEW
1729506	[meta] SpiderMonkey Frontend		meta	P1	NEW
1729507	[meta] Assemblers / MacroAssemblers / Trampolines		meta	P1	NEW
1729508	[meta] Garbage Collection		meta	P1	NEW
1729509	[meta] Optimizing Compiler		meta	P1	NEW
1729511	[meta] JavaScript Language		meta	P1	NEW
1729513	[meta] SpiderMonkey Fuzzing & Instrumentation & Security		meta	P1	NEW
1729514	[meta] SpiderMonkey Runtime		meta	P1	NEW
1729515	[meta] SpiderMonkey Defects		meta	P1	NEW
1729516	[meta] Just-In-Time Compilers		meta	P1	NEW
1729518	[meta] SpiderMonkey		meta	P1	NEW
1786007	Add a fake Navigation Cache to instrument it with telemetry			P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1791547	Enable balanced heap limits		perf-alert	P1	REOPENED	Jon Coppeard (:jonco)
1803803	[meta] JS Perf Experiments - Atoms and Strings		meta	P1	NEW
1805058	[hazards] malformed function and type names			P1	ASSIGNED	Steve Fink [:sfink] [:s:]
1810243	[meta] JS Perf Experiments - Megamorphic Property Access in Speedometer		meta	P1	NEW
1811467	[meta] JS Perf Experiments - Immutable Objects		meta	P1	NEW
1812157	[meta] JS Perf Experiments - Ion Compile Latency		meta	P1	NEW	Justin Link
1812231	waitForBackgroundTask is easy to misunderstand			P1	ASSIGNED	Paul Bone [:pbone]
1812316	[meta] JS Perf Experiments - Bound functions		meta	P1	NEW
1814599	The `MBasicBlock::slots_` mechanism can generate quadratic work and space use			P1	NEW	Julian Seward [:jseward]
1814813	Don't run background sweep and background free concurrently	[sp3]	perf	P1	ASSIGNED	Paul Bone [:pbone]
1814815	Coalesce madvise calls until after sweeping	[sp3]	perf:responsiveness	P1	ASSIGNED	Paul Bone [:pbone]
1819180	Add a dumpRuntimeStats helper			P1	ASSIGNED	Jeff Muizelaar [:jrmuizel]
1825001	Add MIR & LIR output to Perf DEBUG_INFO.			P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1828115	Change inlining rules based on tenuring information?	[sp3]		P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1844400	IonGenericCall stub is misattributed to caller in JIT profiles			P1	NEW	Jeff Muizelaar [:jrmuizel]
1874456	jit::EliminateDeadResumePointOperands never worked as expected.	[sp3]		P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1876939	Crash in [@ JS::Value::isGCThing]		crash, topcrash, topcrash-startup	P1	NEW
1888964	Assertion failure: !done(), at vm/Scope.h:1674		reporter-external, testcase	P1	ASSIGNED	Tooru Fujisawa [:arai]
1892984	[meta] SpiderMonkey Third Party Dependencies		meta	P1	NEW
1892985	[meta] SpiderMonkey ICU Dependency		meta	P1	NEW
1892986	[meta] Irregexp		meta	P1	NEW
1892987	[meta] Zydis	[sm-meta-retriage-2025]	meta	P1	NEW
1892988	[meta] SpiderMonkey Shell		meta	P1	NEW
1892990	[meta] SpiderMonkey Build System		meta	P1	NEW
1892993	[meta] SpiderMonkey Testing & Test Infrastructure		meta	P1	NEW
1892998	[meta] SpiderMonkey APIs (Public, Private, API Design)		meta	P1	NEW
1894123	Branch hinting improvements			P1	NEW	Julien Pages [:jpages]
1894274	[meta] Out Of Memory Handling		meta	P1	NEW
1894275	[meta] Bugs made worse by small-OOM recovery		meta	P1	NEW
1896581	Tweak Ion's Backtracking Allocator spill costs			P1	NEW	Yulia Startsev [:yulia]
1909175	Build SpiderMonkey for WASI with Intl/ICU in debug mode in CI			P1	NEW
1911911	jitsrc gets stuck on __memcpy_avx_unaligned_erms			P1	NEW
1912717	Move LMinMax{D,F} codegen into shared CodeGenerator			P1	ASSIGNED	André Bargull [:anba]
1914491	Investigate moving Ion linking off-thread			P1	NEW
1914496	Investigate slow Ion code in sp3 Angular	[js-perf-next]		P1	NEW
1934580	Create an Executable object to hold executable and data sections for the Jit code.			P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1934913	Allocate pages for holding a data section.			P1	ASSIGNED	Nicolas B. Pierron [:nbp]
1936339	Make wasm struct loads movable			P1	ASSIGNED	Ben Visness [:bvisness]
1938512	Consider splitting use position list into two separate lists			P1	NEW
1939970	Failure to wrap JS exception as wasm with wasm disabled in realm		reporter-external	P1	NEW	Ryan Hunt [:rhunt]
1943077	[meta] THE Place where to pick your next performance issue to work on.		meta	P1	NEW
1946615	Improve error message in Temporal.Duration.prototype.add/subtract for calendar durations			P1	NEW
1947750	[meta] Improve arm64 codegen quality		meta	P1	NEW
1949495	Update spidermonkey android debugging instructions			P1	NEW	Ted Campbell [:tcampbell]
1950680	[meta] Wasm ref type optimizations in MIR		meta	P1	NEW
1960433	Support trial inlining in the baseline interpreter			P1	NEW	Iain Ireland [:iain]
1960435	Tune heuristics for offthread baseline compilation			P1	NEW
1966549	Crash in [@ js::wasm::Frame::returnAddress]		crash, pernosco-wanted	P1	NEW	Yury Delendik (:yury)
1967359	Crash in [@ mozilla::CycleCollectedJSContext::Context] via AnnotateAndSetOutOfMemory		crash, regression	P1	NEW	Matthew Gaudet (he/him) [:mgaudet]
1970035	Improve capabilities of the EffectiveAddressAnalysis pass			P1	NEW	Julian Seward [:jseward]

68 Total; 68 Open (100%); 0 Resolved (0%); 0 Verified (0%);

P2 Bugs

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
482298	Implement ES5 strict mode		dev-doc-complete	P2	REOPENED	Jim Blandy :jimb
605515	Strict mode code should throw ReferenceError when assigning to a global if it doesn't exist at BINDNAME time			P2	NEW
944260	[jsdbg2] Debugger should provide a GC-insensitive replacement for findScripts			P2	NEW
1008337	[meta] GC memory efficiency tracking bug	[MemShrink:meta]	meta	P2	NEW
1008341	[meta] GC Correctness & Stability		meta	P2	NEW
1284975	[meta] Make SpiderMonkey clean on UBSan		meta	P2	NEW
1299643	[meta] Google Docs performance issues due to javascript execution	[platform-rel-Google][platform-rel-GoogleSuite][platform-rel-GoogleDocs]	meta, perf	P2	NEW
1339557	[Meta] Quantum Release Criteria: Figure out why we are so slow on Speedometer v2		meta, perf	P2	NEW
1375565	GC: Do nursery allocation for external strings		perf	P2	NEW
1376904	[meta] Stop doing full GCs		meta	P2	NEW
1380129	[meta] Support AArch64 in ion		meta	P2	NEW
1385120	Speedometer Ember benchmark spends a lot of time in toString().		perf	P2	NEW
1386390	Crash in JS::WeakCache<T>::lookupForAdd		crash, regression	P2	NEW
1393712	for-await-of with Async Generator is slow	[js:perf]	perf	P2	NEW
1396933	Error message for strict mode functions' and arguments' properties is misleading	[js:correctness]		P2	REOPENED
1400237	[meta] GC crashes		meta	P2	NEW
1400641	Crash in FinalizeTypedArenas<T>		crash	P2	NEW
1402265	Better estimate CPU resources and apportion HelperThreads to tasks			P2	NEW
1402700	Crash in js::InitFunctionEnvironmentObjects		crash	P2	NEW
1407691	Run away memory use sending ArrayBuffers to workers	[MemShrink:P3]		P2	NEW
1409441	Fix some perf issues on the EnterJit path		leave-open, perf	P2	ASSIGNED	Jan de Mooij [:jandem]
1409953	Make PCToLineNumber stop hanging the Gecko profiler	[js:tech-debt][js:testability]		P2	NEW
1410238	Postpone malloc accounting of nursery strings until they are tenured			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1426034	Access to `undefined` is slow in modules loaded via require()			P2	NEW
1428972	RexBench is slower than Chrome/WebKit		perf	P2	NEW
1431142	Crash in xul!icu_58::DecimalFormat::updatePrecision (likely OOM)		crash, csectype-nullptr, testcase	P2	NEW
1431831	[Meta] Spectre mitigations for C++ bounds checks reachable from JS		meta	P2	NEW
1436427	Consider optimizing MBoundsCheck followed by MSpectreMaskIndex			P2	NEW
1445020	Slow shutdown of debug Firefox (~30s) builds after loading http://talend.surge.sh			P2	NEW
1447701	Find better solution for making JSID_VOID constexpr (and fix SM Rust breakage)			P2	NEW
1454917	[meta] SpiderMonkey bytecode abstraction		meta	P2	NEW
1454919	Move bytecode iterators and other gadgets to a common header			P2	NEW
1464274	(msan) use of uninitialized value in HashTableEntry::isFree()			P2	NEW
1464281	(msan) use of uninitialized value in CreateRegExpMatchResult			P2	NEW
1471438	[meta] Provide more performance info to the gecko profiler		meta	P2	NEW
1489826	Crash in js::jit::RangeAnalysis::truncate	[#jsapi:crashes-retriage]	crash	P2	NEW
1490849	Off-Main-Thread Baseline Compilation	[js-perf-next]		P2	NEW
1491204	Coalleace nursery tests per basic block			P2	NEW
1494271	Crash in js::TenuringTracer::traceObject	qa-not-actionable	crash, stalled	P2	NEW
1495355	Add explicit GC tuning modes (low memory, tab in background, etc)	[MemShrink:P2]		P2	NEW
1499538	Reduce the overhead of JS helper threads			P2	NEW
1501438	[meta] Use XPCOM thread pools for Spidermonkey		meta	P2	NEW
1503319	[meta] (Legacy) JavaScript Streams		meta	P2	NEW
1504468	Either ban cross-domain stream readers or write tests for them			P2	NEW
1505192	twitch.tv site loads slow compared to Chrome		perf:pageload	P2	NEW
1505589	Make Profiler Counters usable within the JavaScript Engine			P2	NEW
1506263	Local builds don't update BUILDID resulting in cache corruption (XDR)			P2	NEW
1508121	Crash in js::jit::LIRGenerator::visitInstructionDispatch	[#jsapi:crashes-retriage]	crash	P2	NEW
1514284	Add bytecode counters to estimate the speed of execution of Interpreters / Baseline / IonMonkey.			P2	NEW
1515380	[meta] Shrink GC nursery on background tabs	[overhead:800k]	meta	P2	NEW
1516775	Optimize lookups on cross-realm WindowProxies			P2	NEW
1517424	Make sure we have tests for WindowProxy lookups involving navigation and document.domain			P2	NEW
1517916	Skeletal Animation: Slow (FPS) on Firefox compare to Chrome		perf, perf:responsiveness	P2	NEW
1518857	provide optimized implementations of float modulus		perf:responsiveness	P2	NEW
1526993	[meta] ARM64: Post ARM64 Ion Support - Issues/Failures to address		meta	P2	NEW
1526995	[meta] ARM64: Post ARM64 Ion Support - Windows-on-ARM Test Failures		meta	P2	NEW
1528986	Investigate OOM crashes in DevTools tests		crash	P2	NEW
1529514	[ARM64] Bing maps is slowing down the browser and remains stuck when zooming out using touchscreen		regression	P2	NEW
1532654	Teach the jit-test harness about the Android log			P2	NEW
1538408	Add StructuredClone tests for Big(U)Int64Arrays			P2	NEW
1540090	Investigate JetStream 2 code-load tests		perf	P2	NEW
1540935	Fix Ion resume point overhead		perf	P2	NEW
1544097	SUMMARY: AddressSanitizer: access-violation z:\build\build\src\js\src\jit\JitcodeMap.cpp:412 in js::jit::JitcodeGlobalTable::lookupForSamplerInfallible(void *,struct JSRuntime *,unsigned __int64)			P2	NEW
1547520	[jsdbg2] Debugger.Frames are dumb about suspended generators			P2	NEW
1548356	Hash the XDR transcode buffer			P2	NEW
1548775	Stop eagerly allocating profile strings			P2	NEW
1555169	Differential Testing: Different output message on ARM32		sec-other, testcase	P2	NEW
1555522	Enable JavaScript Startup Bytecode Cache for DevTools code		perf:responsiveness	P2	NEW
1564602	[jsdbg2] Separate Web Assembly and JavaScript Debugger.Script instances			P2	NEW
1572562	[jsdbg2] DebuggerWeakMap instances cost more in code size than they should.		regression	P2	NEW
1574163	Crash in [@ js::frontend::PerHandlerParser<T>::propagateFreeNamesAndMarkClosedOverBindings]		crash, regression	P2	NEW
1575024	[jsdbg2] Debugger should have a function to reset all current hooks/state	[debugger-mvp]		P2	NEW
1576999	"new Function" cloning of introducer URLs is slow			P2	NEW
1588340	Spidermonkey does not build with --disable-shared-js		leave-open	P2	ASSIGNED	Christian Holler (:decoder)
1589523	include async callers in captured stacks (SavedFrame chains) for free			P2	NEW
1589714	Add web platform tests for weak references			P2	REOPENED
1596984	[jsdbg2] Debugger::hasAnyLiveHooks doesn't check for `onNativeCall`			P2	NEW
1597572	null pointer passed as argument 2, which is declared to never be null in modules/zlib/src/trees.c:873		csectype-undefined, testcase	P2	NEW
1598786	Figure out how BytecodeLocation shows up in the JSAPI public interface, and see if it's removable			P2	NEW
1599542	Support upgrading a SameProcessDifferentThread structured clone buffer to a DifferentProcess buffer			P2	NEW
1600366	Make FunctionBox initialization verifiable and ensure correctness			P2	NEW
1603575	[jsdbg2] Debugger cannot follow cross-compartment promise resolutions			P2	NEW
1604121	Rewrite and optimize source notes			P2	NEW
1608027	JS Errors from new Error are not correctly muted			P2	NEW
1608430	Remove all uses of toSource/uneval			P2	NEW
1611459	ErrorReport::populateUncaughtExceptionReportUTF8VA() can result in a null filename			P2	NEW
1616378	Reimplement Function.prototype.caller			P2	NEW
1620446	Return UniquePtr-like thing from smoosh bindings, instead of raw struct that needs manual free	[smooshmonkey-reserve]		P2	NEW
1623169	Create js::stencil namespace inside SharedStencil.h			P2	NEW
1624449	Muted errors still have an URL/filename			P2	NEW
1626294	Ion bug with function.arguments + aliased formals			P2	NEW
1633217	Object iteration is slower than the competition (3-4 times)			P2	UNCONFIRMED
1635176	Run js ref tests in COOP+COEP headers on treeherder			P2	NEW
1637618	Replace the ELEMENT_PROPERTY_SLOT in the ScriptSourceObject with a callback			P2	NEW	Denis Palmeiro [:denispal]
1642374	Irregexp: Evaluate global caching optimization (RegExpGlobalExecRunner)	[js-perf-next]		P2	NEW	Dan Minor [:dminor]
1653267	Unnecessary CheckAliasedLexical instruction when accessing a private field			P2	NEW
1662110	[meta] Support progressive compilation of CompilationStencil		meta	P2	ASSIGNED	Nicolas B. Pierron [:nbp]
1663955	[meta] Stencil Phase 2 Capabilities		meta	P2	NEW
1663956	[meta] Stencil Phase 2 Use-Cases		meta	P2	NEW
1666141	Assertion failure: makeWritable(), at jit/JitRealm.h:759	[bugmon:update,bisected,confirmed]	assertion, regression, testcase	P2	NEW
1669376	Extremely elevated memory usage by Facebook			P2	UNCONFIRMED
1669806	Optimize DOM getters with polymorphic receivers			P2	NEW
1670301	Add telemetry for how many JSScripts are delazified.			P2	NEW
1672272	High memory use and slow performance on Windows			P2	NEW
1675837	Lots of memory used by JS classes on Facebook			P2	REOPENED
1679719	High memory use for JS classes on TechRadar			P2	UNCONFIRMED
1681181	High memory use for JS classes on imgur and Reddit			P2	NEW
1682854	Crash in [@ JSStructuredCloneWriter::startWrite]	[not-a-fission-bug], qa-not-actionable	crash	P2	NEW
1683140	[meta] Memory leaks		meta	P2	NEW
1683978	Leaks a ton of memory on Facebook.com after using for a while			P2	UNCONFIRMED
1686775	Consider delazifying small inner functions with their enclosing functions	[sp3]		P2	NEW
1687964	Cleanup initial-prototype lookup for JSFunctions			P2	NEW
1688187	Use inline assembly to optimize ToInt32 on Aarch64 Apple.			P2	NEW
1689328	IonMonkey: BacktrackingAllocator: use loop depths in computation of spill costs (weights)			P2	NEW	Julian Seward [:jseward]
1689434	Experiment with length-3 TaggedParserAtomIndex in Parser	[sp3]		P2	NEW
1692856	Transition from GuardSpecificFunction to GuardFunctionScript breaks trial-inlining		regression	P2	NEW
1694067	Install a telemetry probe for JS parse errors on UI resources			P2	NEW	Zibi Braniecki [:zbraniecki][:gandalf]
1696412	GC globalArrayLargeArray microbenchmark triggers very long minor GCs			P2	NEW
1698095	Consider preserving a LifoAlloc chunk for common delazification stencil case			P2	NEW
1699830	Web content process consumes 2GB of memory when browsing on Facebook			P2	REOPENED
1700291	[meta] Pretenure long-lived allocations		meta	P2	NEW	Jon Coppeard (:jonco)
1701197	[meta] wasi port		meta	P2	NEW
1701945	Ryzen startup crash in [@ js::jit::MoveResolver::resolve] (= with cpu family 23 model 1 stepping 1)		crash	P2	NEW
1701956	Scrolling twitter has more checkerboarding than Chrome		perf:responsiveness	P2	NEW
1708779	Consider unserializing directly to the Tenured generation when the input is too big for the nursery			P2	NEW
1711284	gigabytes of JS classes on Twitter			P2	UNCONFIRMED
1713390	Investigate VMCall/CallWithABI performance (2021)			P2	NEW
1717597	Twitter feeds paint very slowly	[sp3]		P2	UNCONFIRMED
1720480	Consider enabling exemplar cities again			P2	ASSIGNED	André Bargull [:anba]
1722737	Re-implement checks for missing self-hosting intrinsics			P2	NEW
1722802	Add JSAPI functions to create JS modules w/ custom exports			P2	UNCONFIRMED
1724213	Investigating replacing pinned atoms with permanent atoms			P2	NEW	Jon Coppeard (:jonco)
1727191	Add Ion CacheIR tools to the JavaScript shell			P2	NEW
1735591	Large GC slice budget overruns in hydration-preact benchmark (found from BHR)			P2	NEW
1738566	Scrolling and dragging a section of graph on perfherder spends a lot of time in JS	[fxp]		P2	NEW
1752520	Ion's RA: after splitting, spill bundle interferes with other fragments			P2	NEW
1752582	Ion's RA: investigate invariants related to live-range splitting			P2	NEW
1754892	Crash in [@ js::ModuleObject::getCycleRoot]		crash	P2	NEW
1755022	GC slice with 6ms budget went for 61.9ms (sweeping, waiting for parallel tasks)			P2	NEW
1757426	wordle-analyzer.com takes a massive amount of time to make progress compared to Chromium			P2	NEW
1757798	Crashing spidermonkey tests do not always fail			P2	NEW
1763265	GC_SLICE_DURING_IDLE telemetry is useless and possibly misleading			P2	NEW
1765780	Consider always-inlining $ArrayValues/CreateArrayIterator to enable scalar replacement of iterator objects in more cases			P2	NEW
1768255	Find conditions when JSBC compression improves page load time			P2	NEW
1769362	spidermonkey-91 branch fails compile with gcc-12.1			P2	UNCONFIRMED
1770763	[meta] Investigate balancing GC heap sizes using compositional limit rule		meta	P2	NEW
1773339	Use TaskController directly for off-thread JS parsing			P2	NEW
1778399	Terrible input lag on twitch.tv chat			P2	REOPENED
1779767	Preserved DOM reflectors always get tenured			P2	NEW
1780916	String in String output differnet error message			P2	NEW
1782334	Assertion failure when calling join() on an array of tuples			P2	NEW
1786395	Assertion failure: retainedBytes_ >= nbytes, at /builds/worker/checkouts/gecko/js/src/gc/Scheduling.h:769	[bugmon:bisected,confirmed]	assertion, pernosco, regression, testcase	P2	NEW
1787350	Spec compliance and implementation simplifications for Record and Tuple properties and prototypes			P2	NEW
1791395	Consider splitting AliasSet::ObjectFields into more fine-grained categories			P2	NEW
1793929	Crash [@ vixl::UseScratchRegisterScope::AcquireNextAvailable]		regression, reporter-external, testcase	P2	NEW
1798403	JS Test Suite Readme links to MDN page that doesn't exist			P2	NEW
1798958	Experiment with removing char16_t JS parser	[sp3]		P2	NEW
1800806	Maps and Sets are slower than native Objects or Arrays			P2	UNCONFIRMED
1802130	Intermittent awsy/test_memory_usage.py TestMemoryUsage.test_open_tabs | single tracking bug	[retriggered]	crash, intermittent-failure	P2	NEW
1803577	Make MCharCodeAt infallible when the input is MLinearizeForCharAccess			P2	NEW
1804759	Asserting in EmberJS-Debug-TodoMVC does a lot of work to build the error message			P2	NEW
1804964	Experiment using CanGC allocations directly for JSDependentString::new_	[sp3]		P2	NEW
1805045	Codepen demo (https://codepen.io/Mertl/full/GRJOgjL) is slower than Chrome			P2	NEW
1810419	Truncated MMul is emitting an overflow check			P2	NEW
1810954	Experiment with switching jemalloc arenas before collecting	[sp3]		P2	NEW
1811913	W-and-later-X mmap calls are not allowed on NetBSD			P2	NEW
1812161	Experiment with prioritizing Ion off-thread compile tasks	[sp3]		P2	NEW
1812655	Try to remove 'substring' selfhosted code	[sp3]		P2	NEW
1813309	Investigate if avoiding ensureLinear call under CopyStringChars would improve performance	[sp3]		P2	NEW
1813706	Investigate if ExecuteRegExp could avoid flattening the rope in some cases	[sp3]		P2	NEW
1814520	Add support back for allocation tracking with GC types			P2	NEW
1814990	Structured clone reading spending too much time in telemetry code in this instance			P2	NEW
1816900	Document how to measure cache behaviour			P2	NEW
1817041	Make JSValidatorParent to send the data over in OnStopRequest rather than OnDataAvailable	[orb:m2]		P2	NEW	Sean Feng [:sefeng]
1817284	[meta] JS Perf Experiments - Reduce mprotect		meta	P2	NEW
1817368	Missing profiler category annotation for some GC code in workers			P2	NEW
1817993	Unify field initialization code for decorators			P2	NEW
1818337	Be more aggressive about JitScripts for off-thread parses	[sp3]		P2	NEW
1818905	[hazards] Add an annotation to say that a reference count will not drop to zero		regression	P2	NEW
1820627	A lot more time is spent in completeWork on matrix-react compared to Chrome	[sp3]		P2	NEW
1820839	Assertion failure: desired && OffsetFromAligned(desired, allocGranularity) == 0, gc/Memory.cpp:258			P2	NEW
1821107	WeakMap.get is 5x slower in SM than V8	[sp3]		P2	NEW
1821108	EmberJS-TodoMVC spends a lot more time in removeListenerFrom doing array splicing than in V8			P2	NEW
1821293	JIT increases GC time in Speedometer3?	[sp3]		P2	REOPENED
1821582	`worker.postMessage` with a WebAssembly.Memory followed by 2 typed arrays doesn't work.			P2	UNCONFIRMED	Ben Visness [:bvisness]
1821813	Running Speedometer3 triggers ALLOC_TRIGGER slices too easily	[sp3]		P2	NEW
1822411	MajorGC pauses in WebWorker possibly due to lack of incremental GC			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1822626	Worker is doing doubled GCs			P2	NEW
1822727	random-hex.js is faster in V8 than SM	[sp3]		P2	NEW
1822734	JS demo (https://www.fxhash.xyz/generative/slug/serendipity-vs-consequence) appears to spend large-ish time in js:frontend			P2	NEW
1822890	SM's array_splice_impl seems slower than V8's Builtin:ArrayPrototypeSplice	[sp3]		P2	NEW
1822897	SM spends more time parsing than V8 on shell-backbone-todoMVC	[sp3]		P2	NEW
1822965	Gecko failure at: JSObject::maybeUnwrapAs	[reporter-external] [client-bounty-form] [verif?]	reporter-external	P2	NEW
1823758	Synthesize baseline interpreter trampolines when bailing out			P2	NEW	Denis Palmeiro [:denispal]
1823931	[...array] is slower than in V8			P2	NEW
1824203	Prepopulate Ion ICs based on active baseline stubs	[sp3]		P2	NEW
1824250	Generate better masm for argument-copying loops			P2	NEW
1825791	checkAndUpdateView is slower in SM than V8	[sp3]		P2	NEW
1827268	shallowEqual from React is a lot slower in SM than V8 and JSC	[sp3]		P2	NEW
1830195	Investigate optimization of constant variables	[sp3]		P2	NEW
1832245	Clean up error handling in custom structured clone mechanism			P2	NEW
1832247	Remove `canTransfer` hook from custom serialization mechanism (structured clone)			P2	NEW
1832248	Consider using or removing structured clone OwnTransferablePolicy::NoTransferables			P2	NEW
1833628	X-only Memory: jmp *0x02(%rip) failures.			P2	NEW
1837032	Reflect hazard analysis annotations in the callgraph			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1837937	Investigate better scheduling for minorGC	[sp3]		P2	NEW	(use sphink@gmail.com aka ˸sfink instead)
1840423	Investigate Ion threshold tweaking heuristics			P2	NEW
1842135	MartyPC Player slower in Firefox			P2	UNCONFIRMED
1844868	4.4x slower than Chrome on the single String.prototype.split call in Editor-CodeMirror	[sp3]		P2	NEW
1845840	1.4x slower than Safari on the "jsx" function in React	[sp3]		P2	NEW
1846297	Nursery string deduplication slows down some Speedometer 3 tests	[sp3]		P2	NEW
1848465	Invalidate the bytecode cache and restart the request when decode fail			P2	NEW
1848884	Store scrambled hash values in atoms	[sp3]		P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1849759	Use hint for direct wasm calls whether callee can perform a tail calls			P2	NEW
1849761	Optimize return_call where target is the same function in Ion			P2	NEW
1850392	Optimize stack map storage			P2	NEW
1853482	Type1Font_flattenCharstring from JetStream2 pdfjs is 2x slower than in V8 because of Array.splice			P2	NEW
1858310	Calling Math functions is slow in development builds of the Firefox profiler			P2	NEW
1859381	Crash in [@ js::wasm::Instance::callExport]		crash	P2	NEW	Ryan Hunt [:rhunt]
1860066	Wasm{Array,Struct}Object::obj_trace: don't pass nullptr to TraceManuallyBarrieredEdge			P2	NEW	Julian Seward [:jseward]
1862484	Add ClassField::accessorGetterNode and accessorSetterNode to dumpFields implementation			P2	NEW
1863455	Consider using QueryPerformancyCounter directly for PRMJ_Now instead via GetSystemTimePreciseAsFileTime	[sp3]		P2	NEW
1865051	Consider to call js::NotifyAnimationActivity from nsRefreshDriver::Tick			P2	NEW
1865078	Consider discarding JIT code per realm instead of zone	[sp3]		P2	ASSIGNED	Jan de Mooij [:jandem]
1865900	Try optimizing string hash access on 32-bit by shifting the fat inline atom bit	[sp3]		P2	NEW
1868841	Implement DecoratorEmitter::emitDecorationState and emitUpdateDecorationState			P2	NEW
1868857	Suppress deleted properties using low-bit tags instead of removal	[sp3]		P2	NEW
1873235	Leaking page repeatedly triggers GC without freeing any memory		perf:resource-use	P2	NEW
1874699	TypedArray.subarray is quite slow			P2	NEW
1876147	[meta] JS String Builtins Proposal		meta	P2	NEW
1876279	[meta] Move js tests to Test262		meta	P2	NEW
1876404	Assertion failure: desired && OffsetFromAligned(desired, allocGranularity) == 0, at gc/Memory.cpp:258		reporter-external, testcase	P2	NEW
1876783	JS_Stringify's StringBuffer reallocation is responsible for 14% of the time of SessionWriter			P2	REOPENED
1877083	Codepen demo (https://codepen.io/jtiscione/pen/yxybjX) is 50% slower in Nightly			P2	NEW
1878989	Allow pinning the length of SharedArrayBuffers			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1879907	Investigate making parallel marking work on Android			P2	NEW
1880670	app.qonto.com doesn't load correctly (with fixed OptimizeDeadResumePointOperands)	[sp3]		P2	NEW
1882571	Throw RuntimeError instead of TypeError for atomic wait instructions when used on main thread			P2	NEW
1882955	Direct Wasm-to-IDL calls are slow (using Function.prototype.call.bind)			P2	UNCONFIRMED
1883766	Simplify case statement in MacroAssembler::typedArrayElementSize			P2	NEW
1884050	Explore further improvements to atom caches in zones			P2	NEW	Justin Link
1884148	Ship the Atomics.waitAsync proposal		dev-doc-needed	P2	NEW	Dan Minor [:dminor]
1885483	Provide filename for JSON modules			P2	NEW
1886062	Crash in [@ mozilla::Maybe<T>::operator* | js::unicode::CountUTF16CodeUnits]		crash	P2	NEW
1886280	LifoAlloc::releaseAll() optimization for StoreBuffer is now ineffective			P2	NEW
1888010	Crash in [@ js_arena_malloc]		crash	P2	NEW
1888119	Try to share more of the EnterJit code			P2	ASSIGNED	Jan de Mooij [:jandem]
1889117	Consider exposing TrampolineNative frames and other internal JIT frames to the profiler			P2	NEW
1892186	Test262 failures when running async-module-does-not-block-sibling-modules.js in browser builds			P2	NEW
1892253	Use a shared string buffer type for JS and DOM strings	[sp3]		P2	NEW
1892374	`generateVMWrapper` doesn't ensure alignment of Value allocated on stack for the out parameter.			P2	UNCONFIRMED
1892982	Simplify jstests harness			P2	NEW
1893775	Crash in [@ js::gc::MarkingTracerT<T>::onEdge]		crash, regression	P2	NEW
1894005	Investigate adding a per-script alloc site			P2	ASSIGNED	Jon Coppeard (:jonco)
1894759	Audit the inline assembly in CallImportOnMainThread			P2	NEW
1894835	Crash in [@ js::gc::TenuringTracer::traverse]		crash, stalled	P2	NEW
1894937	Throw away optimized JIT code that references otherwise-dead GC things	[sp3]		P2	ASSIGNED	Bryan Thrall [:bthrall]
1895925	Do not create Wasm structures for simple params/results in PI wrappers			P2	NEW
1896037	Idle GC slices are usually not interruptible			P2	NEW
1897981	[meta] WebAssembly JS Promise Integration		meta	P2	NEW
1898544	[meta] Defer Import Eval Proposal		meta	P2	NEW
1899287	[meta] Redeclarable global eval-introduced vars		meta	P2	NEW
1899578	Attribute helper thread GC work in the profiler			P2	NEW
1902200	JS demo (https://www.fxhash.xyz/generative/26665) is ~2x slower in Nightly			P2	NEW
1902347	[JetStream3] Doxbee tests are very slow			P2	NEW
1902550	Crash in [@ JSClass::doFinalize]		crash	P2	NEW
1902880	Crash in [@ JS::shadow::Zone::gcState]		crash, stalled	P2	NEW
1903322	Remove pref for duplicate named capture groups			P2	NEW
1910820	Laggy UI elements on Youtube			P2	UNCONFIRMED
1911408	Demo at (https://css.github.io/csso/csso.html) spends large percent of 30s around GC			P2	NEW
1912835	[meta] JS inlining heuristics		meta	P2	NEW
1913842	Register allocation and Ion compile times are too slow on Android during Speedometer3	[sp3]		P2	NEW
1914147	Improve the MutableHandle API			P2	NEW
1914502	Scalar replace Object.keys	[js-perf-next][sp3]		P2	NEW
1915272	Support MParameter in FoldLoadsWithUnbox	[sp3]		P2	ASSIGNED	Debadree Chatterjee
1917154	Profile of a demo shows transition from Baseline to Ion after running 6.5s			P2	NEW
1917559	Poisioning finalized cells individually may not be optimal			P2	NEW
1917727	Fix matching of js::RunScript			P2	NEW
1918357	Use a free list for LiveRange			P2	NEW
1918708	[Meta] Implement the Math.sumPrecise proposal		dev-doc-needed, meta	P2	NEW	Debadree Chatterjee
1918957	Assertion failure: ok (Incremental marking verification failed), at /builds/worker/checkouts/gecko/js/src/gc/Verifier.cpp:768		assertion, pernosco	P2	NEW
1919241	WASI recursion limit functions probably shouldn't be marked MOZ_COLD			P2	NEW
1920211	Structured clone should use some automated way of checking valid enum values		sec-want	P2	NEW
1920477	Long MinorGCs remain for on an online JSON-to-HTML converter (followup from bug 1917397)			P2	NEW
1920478	Investigate decommiting new chunks less often			P2	NEW
1920594	Broken frame pointer unwinding in wasm "builtin thunks" on aarch64			P2	NEW
1921657	Firefox is 2x slower than Chrome on a "BSP Maze generator" (and seems to get relatively slower as the iterations increase)			P2	NEW
1923617	Add a wpt test for bug 1918053			P2	NEW	Yoshi Cheng-Hao Huang [:allstars.chh][:allstarschh][:yoshi]
1923827	Assertion failure: toSpace.mallocedBufferBytes >= nbytes, at js/src/gc/Nursery.h:238		reporter-external	P2	NEW
1923996	Vue's createReactiveObject is 2.8x slower in SM than V8 due to StoreBuffer overhead in WeakMap.set	[sp3]		P2	NEW
1925105	Missing interpreter frames in profiles of resumed async functions (interpreter and baseline interpreter)	[sp3]		P2	NEW
1925125	Get rid of the SliceBudget::InterruptRequestFlag typedef			P2	NEW
1925779	Online compression benchmark is ~1.5x slower in Nightly			P2	NEW
1926228	The code that releases Arenas is convoluted and could use tidying up			P2	NEW
1926474	Inflating strings during JSRope::flatten is causing too many page faults on Android	[sp3]		P2	NEW
1926478	Too much time in SetElementMegamorphic for "completeWork" in TodoMVC-React-Redux due to lock contention	[sp3]		P2	NEW
1927640	Loading/starting a small game takes 10s doing regalloc and Module loading on TaskController threads (and lots of time in WASM-Baseline in main thread))			P2	NEW
1928343	Remove unused js/src/irregexp/imported/property-sequences.{h,cc}			P2	NEW
1928493	Remove pref for Promise.try			P2	NEW
1929062	Allow for assertions that a function cannot be reached in the static callgraph (JS_HAZ_ASSERT_CANNOT_REACH and JS_HAZ_ASSERT_CAN_REACH)			P2	NEW
1929128	Add SIMD implementation of SMRegExpMacroAssembler::SkipUntilBitInTable			P2	NEW
1929576	Slow browsing on google sites with very frequent minor GCs			P2	NEW
1933577	./mach jstests --repeat 2 asserts 'encoding_test.selfhosted_xdr_mode == "encode"'			P2	NEW
1933581	Merge error reporting code paths in JSONFullParseHandler<CharT>::reportError()			P2	NEW
1934983	Idea: Use fuses to fastpath proxy traps			P2	NEW
1935191	Use fuses to optimize IsOptimizableInitForMapOrSet	[sp3]		P2	NEW
1935626	Reduce the number of VMFunction calls on Speedometer 3 and JetStream 3	[sp3]		P2	NEW
1935630	JIT hints can result in extra VM calls for Ion compilation	[sp3]		P2	ASSIGNED	Jan de Mooij [:jandem]
1935722	nonincrementalByAPI GCs are too restrictive			P2	NEW
1937550	Enable fuzzing for Temporal			P2	ASSIGNED	André Bargull [:anba]
1937653	Use JS::Prefs for offthread compilation			P2	NEW
1937920	GC callbacks can easily cause assertions or infinite loops		leave-open	P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1938100	Optimize more key types for GetElem/SetElem	[sp3]		P2	NEW
1940069	Replace CompactBufferWriter's buffer allocation to use LifoAlloc	[sp3]		P2	NEW
1940070	CompactBufferWriter should avoid write-back	[sp3]		P2	ASSIGNED	Nicolas B. Pierron [:nbp]
1940342	ProtoKeys break binary compatibility		regression	P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1940491	https://rue-a.github.io/L-Systems/ became slightly slower after the new buffer allocator		regression	P2	NEW
1940673	Nightly is 70% slower than Chrome on an HTML-to-Hiccup converter (http://html2hiccup.buttercloud.com/)			P2	NEW
1940678	Firefox is 2x slower on an HTML-to-Hiccup converter (https://html2hiccup.dev/)			P2	NEW
1941104	https://webassembly.github.io/wabt/demo/wat2wasm/ is 3x slower in Nightly and uses 2GB more RAM (all in heap-unclassified)			P2	NEW
1944629	Add a fast path for String.localeCompare	[js-perf-next]		P2	NEW
1945012	[hazards] Upgrade gcc past gcc9			P2	NEW
1946772	Add links from Temporal error messages in developer console to MDN documentation			P2	NEW
1947730	EdgeNeedsSweepUnbarrieredSlow API unnecessarily takes a mutable pointer			P2	NEW
1947756	69% tenuring rate on modified Codepen Demo (https://codepen.io/Mikhail-Bespalov/pen/dPyyZed?editors=1010), and Firefox uses 800MB-1.2GB RAM. Chrome uses 200MB			P2	NEW
1948305	[meta] [Interop 2025] Modules	sm-meta-retriage-2025	meta	P2	NEW
1948310	[meta] [Interop 2025] WebAssembly		meta	P2	NEW
1949094	Nightly is 3.25x slower than Chrome to paste text on https://quilljs.com/playground/snow			P2	NEW
1949221	Testcase generating N promises and immediately resolving them is 21x slower in Nightly			P2	NEW
1950173	Heap iteration depends on GC callbacks not starting an incremental GC			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1950952	Understand why promise resolution is slow	[js-perf-next]		P2	NEW
1952399	Low frequency crash in [@ js::wasm::Instance::code] in trap handling		crash	P2	NEW	Julian Seward [:jseward]
1953749	Free weak map storage during background finalization for JS WeakMap objects			P2	NEW	Jon Coppeard (:jonco)
1953910	Optimize Wasm-GC load/store codegen			P2	NEW	Ryan Hunt [:rhunt]
1955545	Use "islamic-tbla" calendar when either "islamic" or "islamic-rgsa" was requested			P2	ASSIGNED	André Bargull [:anba]
1956363	[meta] Improve JetStream3 performance		meta	P2	NEW
1961056	Improve alias analysis for nbody			P2	NEW
1962457	Store pointer to Resolve rather than Reject in promise			P2	ASSIGNED	Matthew Gaudet (he/him) [:mgaudet]
1962778	4x slower than Chrome when calling getters on Vue 2 reactive objects			P2	NEW
1962832	Stop setting non-deduplicatable bit			P2	ASSIGNED	Steve Fink [:sfink] [:s:]
1963119	Show information about which nursery things were promoted in the profiler			P2	NEW	Jon Coppeard (:jonco)
1963626	Semispace nursery crashes in wasm gc workloads			P2	NEW
1966162	JetStream3 has 33% failure rate on android			P2	NEW
1966196	AJV validator hits JSMSG_TOO_DEEP when V8 doesn't		webcompat:platform-bug	P2	NEW
1966773	Pretenure thisObject allocations for scripted JSOp::New	[js-perf-next]		P2	NEW
1967874	Consider pre-inlining common IC paths into baseline code			P2	NEW
1969020	Consider relaxing restriction on inlining scripts without baseline code			P2	NEW	Iain Ireland [:iain]
1969328	Move allocation site creation to trial inlining			P2	NEW
1969379	Support profiler markers in the shell			P2	NEW	Iain Ireland [:iain]
1969509	Update .maxByteLength to report the source wasm max pages in bytes			P2	NEW
1970438	With self-hosted cache enabled, crash on a demo		regression	P2	NEW
1970789	wasm JSPI: fix up inline assembly in CallOnMainStack			P2	NEW	Julian Seward [:jseward]
1971446	Remove hole check from LoadElementV	[js-perf-next]		P2	ASSIGNED	Iain Ireland [:iain]
1971561	[meta] Improve wasm performance on JetStream3 benchmark		meta	P2	NEW
1971862	Spidermonkey is slower on JS binary-trees			P2	NEW
1973117	Use packed elements check for StoreDenseElement			P2	ASSIGNED	Iain Ireland [:iain]

356 Total; 356 Open (100%); 0 Resolved (0%); 0 Verified (0%);

[js:p1] Bugs

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
957798	[jsdbg2] Debugger.Script and Debugger.Source objects should not pretend dynamically generated scripts have urls	[js:p1]		--	NEW
787879	Crashes while sweeping	[js:p1][unactionable], qa-not-actionable	crash, regression, stalled, topcrash, topcrash-mac, topcrash-win	--	NEW

2 Total; 2 Open (100%); 0 Resolved (0%); 0 Verified (0%);

[js:p2] Bugs

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
750947	IonMonkey: Optimize Uint32 values	[js:p2][games:p?][ion:t][shumway:p1]	perf	--	NEW
753734	Generating JS Warnings is very slow, profile shows js::mjit::ExpandInlineFrames and NS_ScriptErrorReporter	[js:p2]		--	NEW
760095	Move canonical standard class objects from slots on the global to members of the Realm	[js:p2]		--	NEW
977658	Windows PGO builds much slower than non-PGO builds on "cold" code	[js:p2]	perf	--	NEW
978245	Consolidate property-defining code	[js:p2]		--	NEW
977403	Assertion failure: ToInteger(t) == t, at e:\dev\mozilla\central\js\src\jsdate.cpp:278	[js:p2]	assertion	P5	NEW

6 Total; 6 Open (100%); 0 Resolved (0%); 0 Verified (0%);

JS Features

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
962053	Implement ES Realms		dev-doc-needed, feature	--	NEW

1 Total; 1 Open (100%); 0 Resolved (0%); 0 Verified (0%);

JS Meta Bugs

Full Query

ID	Summary	Whiteboard	Keywords	Priority	Status	Assigned to
622261	[meta] Error message/reporting bugs & enhancements	sm-meta-retriage-2025	meta	--	NEW
652780	[meta] Test262 Issues	sm-meta-retriage-2025	meta	--	NEW
694100	[meta] Tracking bug for ECMAScript 6 in SpiderMonkey		meta	--	NEW
705294	[meta] IonMonkey performance optimizations		meta, perf	--	NEW
745230	[meta] JS Test Harness Improvements		meta	--	NEW
807159	[meta] IonMonkey: Fix Octane benchmark performance		meta	--	NEW
807162	[meta] IonMonkey: Fix PdfJs performance (octane benchmark)	[ion:p1]	meta	P3	NEW
832718	[meta] IonMonkey: Use SIMD to optimize gaussian blur.		meta	P3	REOPENED
835306	[meta] IonMonkey: Improve property accesses.		meta	P3	NEW	Nicolas B. Pierron [:nbp]
837921	[meta] SpiderMonkey Embedding		meta	--	NEW
858032	[meta] crashes in EnterBaseline / EnterJit	[file separate bugs for specific reproducible cases][unactionable], ShutDownKill	crash, meta, topcrash, topcrash-startup, topcrash-win	P5	NEW
860923	[meta] "use asm" should not affect code speed		meta	--	NEW
898608	[meta] GC: Drive static analysis of unsafe references to zero		meta	--	NEW
912928	The number of crash and assertion OOM bugs is too damn high [meta]		meta, sec-want	--	NEW
994253	[meta] Extend and improve JS crash diagnostics		meta	P3	NEW
996602	[meta] Centralize common interface of the MacroAssembler.		meta	P3	NEW
1000520	[meta] [jsdbg2] Debugger's performance impact should be less		meta	--	NEW
1008333	[meta] GC tracking bug for performance issues		meta, perf	P3	NEW
1008337	[meta] GC memory efficiency tracking bug	[MemShrink:meta]	meta	P2	NEW
1008341	[meta] GC Correctness & Stability		meta	P2	NEW
1028242	[meta] Improve octane score on windows		meta	--	NEW
1054841	[meta] Shared memory for web workers	[games:p1]	dev-doc-complete, meta	P3	NEW
1057530	[meta] Reduce our GC max-pause	[platform-rel-Games]	meta	P3	NEW
1103158	[Meta] Remove all non-standard JavaScript features		dev-doc-needed, meta, site-compat	--	NEW
1122579	[meta] Implement compacting GC		meta	--	NEW
1139700	[meta] ES6 internal methods		meta	--	NEW
1144340	[meta] SpiderMonkey should store 1-based column numbers internally		meta	--	NEW
1147983	[meta] GC microbenchmark for detecting regressions/improvements		meta	--	NEW
1150618	[meta] Spidermonkey shell builds		meta	--	NEW
1152893	[meta] Investigate remaining performance regressions in promises due to async stacks		meta, perf, regression	--	NEW
1154987	[Meta] Move JS parsing off of main thread and enable incremental parsing	[games:p3][platform-rel-Games]	meta, perf	--	NEW
1164973	[meta] Enhance GC telemetry reporting		meta	--	NEW
1172676	[meta] Hazard analysis improvements		meta	--	NEW
1189360	[meta] JavaScript Code Coverage		meta	P3	NEW
1190294	[meta] Simplify MacroAssembler interface		meta	P3	NEW
1192301	[meta] Bring Order to Chaos (in the GC)		meta	--	NEW
1218972	[meta] Integration of SpiderMonkey within the DOM		meta	P3	NEW
1229043	[meta] BacktrackingAllocator: Optimize memory accesses.		meta, perf	P5	NEW
1232802	[meta] Concurrent GC		meta	--	NEW
1241091	[meta] Poor performance on JS frameworks benchmark	,DevAdvocacy, DevAdvocacy-React, DevAdvocacy-Angular [platform-rel-Frameworks][platform-rel-EmberJS][platform-rel-ReactJS]	meta, perf	--	NEW
1243700	[META] function.sent metaproperty proposal	[DocArea=JS]	dev-doc-needed, meta	--	NEW
1245974	[meta] Proxy/Wrapper performance		meta	--	NEW
1259927	[meta] CacheIR tracking bug		meta, perf	P3	NEW
1274354	[meta] Date.parse, amirite	[webcompat]	DevAdvocacy, meta, webcompat:platform-bug	P3	NEW
1280654	[meta] Expose a set of CLDR data via custom APIs for date/time format UI	[gecko-l20n][milestone5]	meta	P3	NEW
1282939	[meta] Improve in-repo react benchmark performance	[platform-rel-Frameworks][platform-rel-Facebook][platform-rel-ReactJS]	meta	P3	NEW
1284975	[meta] Make SpiderMonkey clean on UBSan		meta	P2	NEW
1299643	[meta] Google Docs performance issues due to javascript execution	[platform-rel-Google][platform-rel-GoogleSuite][platform-rel-GoogleDocs]	meta, perf	P2	NEW
1307062	[meta] JS performance		meta, perf, triage-deferred	P3	NEW
1307395	[meta] Optimize ECMAScript 6 performance		meta	P3	NEW
1308157	[meta] Wasm optimizations to explore		meta	P3	NEW
1317626	[meta] SharedArrayBuffer + Atomics performance work		meta	P3	NEW
1339557	[Meta] Quantum Release Criteria: Figure out why we are so slow on Speedometer v2		meta, perf	P2	NEW
1342037	[meta] Optimize Promise implementation		meta	P3	NEW
1343588	[Meta] Make Facebook benchmark fast	[platform-rel-Facebook]	meta, perf, triage-deferred	P3	NEW
1345706	[meta] Improve lazy parsing		meta, perf	P3	NEW
1347720	[meta] Improve Time to Interactive (TTI) and Display Done (DD) milestone times in FB feed workload		meta, perf	P3	NEW
1347824	[Meta] Make JS Parsing faster		meta, perf	P3	NEW
1351769	[meta] Meta: Quantum Flow JS Changes Meta-Bug		meta, perf	P3	NEW
1352486	[meta] Improve performance on EmberPerf benchmark	[platform-rel-Frameworks][platform-rel-EmberJS]	meta, perf	P3	NEW
1352524	[meta] Improve GC scheduling		meta, perf	P3	NEW
1367103	[meta] Fix TSAN issues in the GC		meta, triage-deferred	P3	NEW
1371162	[meta] Clean up GC tunables.		meta	P3	NEW
1376904	[meta] Stop doing full GCs		meta	P2	NEW
1380129	[meta] Support AArch64 in ion		meta	P2	NEW
1400237	[meta] GC crashes		meta	P2	NEW
1402534	Bugs found with stackTest (stack exhaustion / out of stack memory) [meta]		meta, sec-want	P5	NEW
1403311	[meta] Results from JS fuzzing coverage analysis	[meta]	meta, sec-want	P5	NEW
1430049	[Meta] Spectre JIT mitigations		meta	P3	NEW
1430051	[Meta] Spectre bounds check mitigations		meta	P3	NEW
1431831	[Meta] Spectre mitigations for C++ bounds checks reachable from JS		meta	P2	NEW
1432207	[Meta] Spectre mitigations for Value type checks		meta	P3	NEW
1435795	[meta] ECMAScript stage 4 proposals	sm-meta-retriage-2025	meta	P3	NEW
1435811	[meta] ECMAScript stage 3 proposals	sm-meta-retriage-2025	meta	P3	NEW
1435830	[meta] ECMAScript stage 2 proposals	sm-meta-retriage-2025	meta	P3	NEW
1435869	[META] Decorators proposal		dev-doc-needed, meta	P3	NEW
1435997	[meta] Turn the helper threads system into a real scheduler		meta	P3	NEW
1437103	[Meta] Spectre mitigations for object type checks		meta	P3	NEW
1443170	[meta] ARM64 architecture version support		meta	P3	NEW
1445162	[meta] Improve ARM64 Simulator	[arm64:m4]	meta	P3	NEW
1449600	[meta] Investigate reducing minimum GC memory	[overhead:2MB]	meta	P3	NEW
1454917	[meta] SpiderMonkey bytecode abstraction		meta	P2	NEW
1470909	[meta] Remove all use of C-style varargs from SpiderMonkey (except in SpiderMonkey developer C++ debugging functions, e.g. for dumping stuff to stderr)		meta	P3	NEW
1471438	[meta] Provide more performance info to the gecko profiler		meta	P2	NEW
1472062	[meta] OOM crash evicting the nursery: "Failed to allocate new chunk during GC"	[MemShrink:P2][tbird crash][qa-not-actionable]	crash, meta, top50, topcrash	P3	NEW
1481434	[meta] Wasm tests in WPT		meta	P3	NEW
1488322	[meta] Heap profiling		meta	P5	NEW
1490847	[meta] Long-standing Ion Compilation Time Issues		meta	P5	NEW
1501438	[meta] Use XPCOM thread pools for Spidermonkey		meta	P2	NEW
1503319	[meta] (Legacy) JavaScript Streams		meta	P2	NEW
1507440	[meta] Incrementalise more of the GC to reduce budget overruns		meta	P3	NEW
1507445	[meta] Improve generational GC		meta	P3	NEW
1507448	[meta] Parallelise more parts of the GC		meta	P3	NEW
1509069	[meta] Improve SpiderMonkey internal documentation.		meta	P3	NEW
1515380	[meta] Shrink GC nursery on background tabs	[overhead:800k]	meta	P2	NEW
1519163	[META] ArrayBuffer.prototype.transfer() proposal		dev-doc-needed, meta	P3	NEW
1519482	[META] Function implementation hiding proposal		dev-doc-needed, meta	P3	NEW
1522189	[meta] Separate out string and object pretenuring decisions		meta	P3	NEW
1524305	[meta] JavaScript related bugs found while dogfooding arm64 windows nightlies		meta	P3	NEW
1526993	[meta] ARM64: Post ARM64 Ion Support - Issues/Failures to address		meta	P2	NEW
1526995	[meta] ARM64: Post ARM64 Ion Support - Windows-on-ARM Test Failures		meta	P2	NEW
1529669	[meta] Fuzz bugs specific to ARM64 JavaScript		meta	P3	NEW
1532556	[meta] Optimize boxing of JS values for anyref		meta	P3	NEW
1533449	[meta] Firefox memory use grows unreasonably high in some cases	[MemShrink:meta]	meta	P3	NEW
1537638	[meta] GC OOM behaviour		meta	P3	NEW
1539848	[Meta] Investigate JetStream 2 performance		meta, perf	P3	NEW
1540312	[META] Collection normalization proposal		dev-doc-needed, meta	P3	NEW
1557720	[META] Array.isTemplateObject proposal		dev-doc-needed, meta	P3	NEW
1560561	[meta] Bytecode disassembly enhancement		meta	P5	NEW
1561074	[meta] Implement the WeakRefs proposal		dev-doc-complete, meta	P3	NEW
1564163	[jsdbg2] Debugger implementation cleanup [meta]		meta	P3	NEW
1566145	[meta] Implement the ShadowRealms proposal		dev-doc-needed, meta	P3	NEW
1566147	[META] Throw Expressions proposal		dev-doc-needed, meta	P3	NEW
1568906	[META] Implement the Iterator Helpers proposal		dev-doc-needed, meta	P3	NEW
1569081	[META] Explicit Resource Management proposal		dev-doc-needed, meta	P3	NEW
1571996	[meta] Implement WebAssembly tail calls proposal		meta	P3	NEW
1573900	[meta] Parser Performance Measurment		meta	P3	NEW
1586089	[META] Map.prototype.upsert proposal		dev-doc-needed, meta	P3	NEW
1590305	[meta] WebAssembly quality on mobile systems		meta, mobile	P3	NEW
1600159	[Meta] Clean Up the FunctionBox initialization Story		meta	P3	NEW
1601332	[meta] Stencil format for JS Parser output		meta	P3	NEW
1609486	[meta] Stencil Performance		meta	P3	NEW
1611412	[meta] Lots of one-off crashes during testing on MacOS		meta	P3	NEW
1620583	[meta] Improve error reporting code		meta	P3	NEW
1621641	[meta] Investigate Wasm spec-test failures		meta	P3	NEW
1625130	[meta] WebAssembly SIMD		meta	P3	NEW
1639895	[meta] MIPS support in SpiderMonkey		meta	P5	NEW
1640284	[meta] Create a tool for easily discovering and diagnosing costly CacheIR stubs		leave-open, meta	P3	NEW
1646494	[meta] Integrate JS Stencil work with scheduler		meta	P3	NEW
1648827	[meta] Support AArch64 macOS in JIT and WebAssembly		meta	P3	NEW
1654001	[meta] ECMAScript normative changes		meta	P3	NEW
1655177	[meta] JS Debugger		meta	P5	NEW
1655626	[meta] Implement function-references proposal		meta	P3	NEW
1658309	[meta] Record and Tuple proposal		dev-doc-needed, meta	P3	NEW
1658310	[META] JSON.parse source text access proposal		dev-doc-needed, meta	P3	NEW
1658311	[META] cleanupSome proposal		meta	P3	NEW
1662110	[meta] Support progressive compilation of CompilationStencil		meta	P2	ASSIGNED	Nicolas B. Pierron [:nbp]
1662114	[meta] Stencil Backlog Tasks		meta	P3	NEW
1662156	[meta] Support instantiating JS stencil without allocating inner-inner JSFunctions		meta	P3	NEW
1663955	[meta] Stencil Phase 2 Capabilities		meta	P2	NEW
1663956	[meta] Stencil Phase 2 Use-Cases		meta	P2	NEW
1670026	[META] Resizable and growable ArrayBuffers	[DocArea=JS]	dev-doc-needed, meta, parity-chrome, parity-safari	P3	NEW
1670176	[meta] JSON modules proposal		dev-doc-needed, meta	P3	NEW	Jonatan Klemets [:jon4t4n]
1670403	[meta] Cache Stencils across Documents		meta	P1	NEW
1677201	[meta] Handle OOM's in WebAssembly better		meta	P3	NEW
1677586	[meta] Implement Memory64 proposal		meta	P3	NEW
1683140	[meta] Memory leaks		meta	P2	NEW
1687351	[meta] Experiments in Restricting subclassing support in built-in methods		meta	P3	NEW
1687630	[meta] Instruction selection / codegen improvements for Ion and stubs for wasm on ARM64		meta	P3	NEW
1688750	[META] Module Expressions	[DocArea=JS]	dev-doc-needed, meta	P3	NEW
1690460	[meta] SIMD instruction selection optimizations		meta	P3	NEW
1695715	[meta] WebAssembly Exception Handling		meta	P3	NEW
1700291	[meta] Pretenure long-lived allocations		meta	P2	NEW	Jon Coppeard (:jonco)
1700381	[meta] Improve Scalar Replacement		meta	P3	NEW
1701164	[meta] Redundant MoveGroups and other Move badness		meta	P3	NEW
1701197	[meta] wasi port		meta	P2	NEW
1706922	[meta] WebAssembly relaxed SIMD		meta	P3	NEW
1707066	[meta] Improve performance on ReactDOM		meta	P1	NEW
1707723	[meta] Investigate CacheIR opportunities in ReactDOM		meta	P3	NEW
1708400	[meta] Clean-up jsapi header		meta	P5	NEW
1710433	[META] Symbols as WeakMap property keys	[DocArea=JS]	dev-doc-needed, meta, parity-chrome, parity-safari	P3	NEW
1712872	[meta] Add ICU4X support to irregexp		meta	P3	NEW	Iain Ireland [:iain]
1712893	[meta] Wasm code size improvements		meta	P3	NEW
1713657	[META] RegExp set notation + properties of strings proposal		dev-doc-needed, meta, parity-chrome, parity-safari	P3	NEW
1713658	[META] Dynamic Import Host Adjustment proposal		dev-doc-needed, meta	P3	NEW
1715274	[meta] Add support for Type Reflections in the WASM JS-API (js-types)		meta	P3	NEW
1727034	[meta] Wasm debugging and tooling		meta	P3	NEW
1728518	[meta] Wasm JIT-bugs		meta	P3	NEW
1729502	[meta] SpiderMonkey Site Issues		meta	P1	NEW
1729503	[meta] SpiderMonkey Intermittents		meta	P1	NEW
1729504	[meta] SpiderMonkey Crashes		meta	P1	NEW
1729506	[meta] SpiderMonkey Frontend		meta	P1	NEW
1729507	[meta] Assemblers / MacroAssemblers / Trampolines		meta	P1	NEW
1729508	[meta] Garbage Collection		meta	P1	NEW
1729509	[meta] Optimizing Compiler		meta	P1	NEW
1729511	[meta] JavaScript Language		meta	P1	NEW
1729512	[meta] WebAssembly Language		meta	P3	NEW
1729513	[meta] SpiderMonkey Fuzzing & Instrumentation & Security		meta	P1	NEW
1729514	[meta] SpiderMonkey Runtime		meta	P1	NEW
1729515	[meta] SpiderMonkey Defects		meta	P1	NEW
1729516	[meta] Just-In-Time Compilers		meta	P1	NEW
1729518	[meta] SpiderMonkey		meta	P1	NEW
1736059	[meta] Import Attributes proposal (f.k.a. Import Assertions)	meta	dev-doc-needed, meta, parity-chrome, parity-safari	P3	NEW
1736079	[meta] Additional static analyses using the GC rooting hazard analysis framework		meta	P3	NEW
1736620	[meta] SpiderMonkey: GDB Instrumentation		meta	P3	NEW
1741457	[meta] Improve SpiderMonkey Error Messages		meta	P5	NEW
1742930	[meta] Optimize call_indirect		meta	P3	NEW
1745166	[META] Destructuring Private Fields proposal		dev-doc-needed, meta	P3	NEW
1749986	[meta] Wasm problems on large web properties, and related work		meta	P3	NEW
1750942	[meta] Optimize certain object operations better (Watchtower)		meta	P3	NEW
1753924	[meta] HTTP caching of compiled code		meta	P3	NEW
1755624	[meta] Wasm benchmarking		meta	P3	NEW
1757272	[meta] LoongArch64 support in SpiderMonkey		meta	P5	NEW
1758541	[meta] Lukas JavaScript engine Fuzzing		meta	P3	NEW
1759825	[meta] Improve matrix-react benchmark		meta, perf	P3	NEW
1760153	[meta] Performance issues in structured clone (aka structured serialize/deserialize)		meta	P3	NEW
1763378	[meta] Register allocation		meta	P5	NEW
1769847	[meta] Improve ShadowRealm error messages		meta	P3	NEW
1770763	[meta] Investigate balancing GC heap sizes using compositional limit rule		meta	P2	NEW
1771946	[meta] SpiderMonkey: JavaScript-C interoperability.		meta	P5	NEW
1773054	[META] String.dedent	[DocArea=JS]	dev-doc-needed, meta	P3	NEW
1773135	[META] Duplicate named capture groups	[DocArea=JS]	dev-doc-needed, meta	P3	NEW
1774824	[meta] Improve support for managed languages		meta	P3	NEW
1774825	[meta] Implement the GC proposal		meta	P3	NEW
1781203	[META] Source Phase Imports (f.k.a Import Reflection)	[DocArea=JS]	dev-doc-needed, meta	P3	NEW	Yulia Startsev [:yulia]
1783130	[meta] Add dump method to all C++ classes		meta	P3	NEW
1793648	[meta] SpiderMonkey failures induced by faulty Hardware.		meta	P5	NEW
1795640	[meta] Investigate parallel marking		meta	P3	NEW	Jon Coppeard (:jonco)
1801188	[meta] JS Perf Experiments		meta	P3	NEW
1801189	[meta] JS Perf Experiments - JITs and CacheIR		meta	P3	NEW
1801191	[meta] JS Perf Experiments - GC Marking and Nursery		meta	P3	NEW
1801192	[meta] JS Perf Experiments - Parsing		meta	P3	NEW
1801194	[meta] JS Perf Experiments - Benchmark Review		meta	P3	NEW
1803803	[meta] JS Perf Experiments - Atoms and Strings		meta	P1	NEW
1804307	[meta] Implement the WebAssembly memory control proposal		meta	P3	NEW
1805038	[meta] New Set methods		meta, parity-safari	P3	NEW
1808325	[meta] JS Codepen demos that are slower in Firefox than in Chrome		meta	P3	NEW
1808579	[meta] Quality of life improvements for spidermonkey performance work		meta	P3	NEW
1809948	[meta] JS Perf Experiments - Telemetry		meta	P3	NEW
1810243	[meta] JS Perf Experiments - Megamorphic Property Access in Speedometer		meta	P1	NEW
1811054	[meta] Change Array By Copy proposal		meta	P3	NEW
1811467	[meta] JS Perf Experiments - Immutable Objects		meta	P1	NEW
1812057	[meta] JS Perf Experiments - Objects and Properties		meta	P3	NEW
1812157	[meta] JS Perf Experiments - Ion Compile Latency		meta	P1	NEW	Justin Link
1812316	[meta] JS Perf Experiments - Bound functions		meta	P1	NEW
1814471	[META] Symbol Predicates Proposal	[DocArea=JS]	dev-doc-needed, meta	P3	NEW
1814473	[META] Intl Era and MonthCode Proposal	[DocArea=JS]	dev-doc-needed, meta	P3	NEW
1815411	[meta] Tune parallel marking for more than two threads		meta	P3	NEW	Jon Coppeard (:jonco)
1815487	[meta] Improve Profiler instrumentation of JIT code		meta	P3	NEW
1817284	[meta] JS Perf Experiments - Reduce mprotect		meta	P2	NEW
1818511	[meta] Wasm GC support for Kotlin		meta	P3	NEW
1826840	[meta] Optimize scripted proxies in CacheIR		meta	P3	NEW
1828714	[meta] Too much time spent in RegExp-related functions on Speedometer (String.prototype.replace, RegExp.prototype.test, String.prototype.match, RegExp.prototype.exec)	[sp3]	meta	P3	NEW
1833646	[META] Float16Array proposal		dev-doc-needed, meta	P3	NEW
1839673	[META] Temporal proposal		meta	P3	NEW
1839676	[meta] Improve error messages for Temporal		meta	P3	NEW
1839694	[meta] Add Intl support for Temporal		meta	P3	NEW
1840643	[META] Implement the Async Iterator Helpers proposal		dev-doc-needed, meta	P3	NEW
1847830	[meta] Experiment with OOM Handling Behaviour		meta	P3	NEW
1859006	[meta] Audit core GC types for wasted memory		meta	P3	NEW
1860022	[META] Iterator.range		dev-doc-needed, meta	P3	NEW
1861740	[meta] Improve debugging experience around Promise and async function		meta	P3	NEW
1862213	[Meta] Time zone canonicalization		meta	P3	NEW
1862220	[META] Uint8Array to/from base64 and hex		dev-doc-needed, meta	P3	NEW
1865164	[meta] Flexible Vectors Wasm proposal		meta	P3	NEW
1870723	[meta] Fuse Based Optimization		meta	P3	NEW
1871158	[meta] Regressions from not having tier up opportunities on loop-edges (OSR)		meta	P5	NEW
1876147	[meta] JS String Builtins Proposal		meta	P2	NEW
1876279	[meta] Move js tests to Test262		meta	P2	NEW
1885342	[meta] WebAssembly performance gaps		meta	P3	NEW
1886557	[meta] Make JIT Spraying implausible		meta	P3	NEW
1886562	[meta] Move JIT constants to a data-section which is not executable		meta	P3	ASSIGNED	Nicolas B. Pierron [:nbp]
1886563	[meta] Make the location of immediate constants uncertain		meta	P3	NEW
1888482	[meta] Implement the custom-page-sizes proposal		meta	P3	NEW
1890610	[meta] Gary JavaScript engine Fuzzing	sm-meta-retriage-2025	meta, reporter-external, sec-other	P3	NEW
1892984	[meta] SpiderMonkey Third Party Dependencies		meta	P1	NEW
1892985	[meta] SpiderMonkey ICU Dependency		meta	P1	NEW
1892986	[meta] Irregexp		meta	P1	NEW
1892987	[meta] Zydis	[sm-meta-retriage-2025]	meta	P1	NEW
1892988	[meta] SpiderMonkey Shell		meta	P1	NEW
1892990	[meta] SpiderMonkey Build System		meta	P1	NEW
1892993	[meta] SpiderMonkey Testing & Test Infrastructure		meta	P1	NEW
1892998	[meta] SpiderMonkey APIs (Public, Private, API Design)		meta	P1	NEW
1893511	[meta] GC Ease of Use		meta	P3	NEW
1894274	[meta] Out Of Memory Handling		meta	P1	NEW
1894275	[meta] Bugs made worse by small-OOM recovery		meta	P1	NEW
1897981	[meta] WebAssembly JS Promise Integration		meta	P2	NEW
1898544	[meta] Defer Import Eval Proposal		meta	P2	NEW
1899287	[meta] Redeclarable global eval-introduced vars		meta	P2	NEW
1899802	[meta] Regular Expression Pattern Modifiers		meta	P3	NEW
1899830	[meta] Remove JIT usage from the parent process		meta	P3	NEW
1902244	[meta] Make the JIT compatible with CET Shadow Stacks		meta	P3	NEW
1903968	[meta] Nils JavaScript engine Fuzzing		meta	P3	NEW
1905241	[Meta] Promise.try		meta	P3	NEW
1906918	[meta] VIXL		meta	P3	NEW
1911096	[Meta] RegExp.escape		meta	P3	NEW
1911378	[Meta] Math.sumPrecise proposal		dev-doc-needed, meta	P3	NEW
1911379	[Meta] Joint Iteration proposal		dev-doc-needed, meta	P3	NEW
1911380	[Meta] Implement the Deferring Module Evaluation proposal		dev-doc-needed, meta	P3	NEW
1912835	[meta] JS inlining heuristics		meta	P2	NEW
1918708	[Meta] Implement the Math.sumPrecise proposal		dev-doc-needed, meta	P2	NEW	Debadree Chatterjee
1918717	[meta] Atomics.pause proposal		meta	P3	NEW
1923732	[Meta] Iterator Sequencing proposal		dev-doc-needed, meta	P3	NEW
1923733	[Meta] Error.isError proposal		dev-doc-needed, meta	P3	NEW
1926857	[meta] ECMAScript stage 2.7 proposals		meta	P3	NEW
1926972	[meta] Improve performance of WebAssembly GC programs		meta	P3	NEW
1929050	[meta] WebAssembly telemetry		meta	P3	NEW
1932473	[meta] sfink backlog		meta	P5	ASSIGNED	Steve Fink [:sfink] [:s:]
1935413	[meta] Prototype Iterator.range		meta	P3	NEW	Serah Nderi
1940289	[meta] SpiderMonkey telemetry		meta	P3	NEW
1941627	[meta] Atomics.waitAsync		meta	P3	NEW
1943077	[meta] THE Place where to pick your next performance issue to work on.		meta	P1	NEW
1944619	[meta] SpiderMonkey Data Gathering (Telemetry, Logging, Profiler Integration, etc)		meta	P3	NEW
1945651	[meta] Slow number-crunchy JS code		meta	P3	NEW
1947507	[meta] Android SpiderMonkey		meta	P3	NEW
1947750	[meta] Improve arm64 codegen quality		meta	P1	NEW
1948305	[meta] [Interop 2025] Modules	sm-meta-retriage-2025	meta	P2	NEW
1948310	[meta] [Interop 2025] WebAssembly		meta	P2	NEW
1949853	[meta] JS Engine Perfetto Integration		meta	P3	NEW
1950680	[meta] Wasm ref type optimizations in MIR		meta	P1	NEW
1951715	[meta] SpiderMonkey: Coverity Static Analysis fixes		meta	P3	NEW
1952253	[Meta] Immutable ArrayBuffer proposal		dev-doc-needed, meta	P3	NEW
1952254	[Meta] ESM Phase Imports proposal		dev-doc-needed, meta	P3	NEW
1956363	[meta] Improve JetStream3 performance		meta	P2	NEW
1957690	[meta] Modules	sm-meta-retriage-2025	meta	P3	NEW
1960807	[meta] Make the buffer allocator into a more general purpose allocator and use it in more places		meta	P3	NEW
1961956	[meta] JS Promise Performance		meta	P3	NEW
1962081	[meta] Potential future Ion work		meta	P5	NEW
1968286	[meta] Improve rooting in JetStream3		meta	P3	NEW
1971561	[meta] Improve wasm performance on JetStream3 benchmark		meta	P2	NEW

310 Total; 310 Open (100%); 0 Resolved (0%); 0 Verified (0%);