RELEASE NOTES FOR: 28
====================================================================================================

Notes generated: Tue Jul 21 09:02:12 CEST 2026

Hint: Prefix bug IDs with https://bugs.openjdk.org/browse/ to reach the relevant JIRA entry.

JAVA ENHANCEMENT PROPOSALS (JEP):

  JEP 535: Shenandoah GC: Generational Mode by Default

      Switch the default mode of the Shenandoah Garbage Collector to the generational mode. Deprecate the
      non-generational mode, with the intent to remove it in a future release.


RELEASE NOTES:

core-libs/java.net:

    JDK-8380549: Changed `HttpCookie` to Accept Cookies With Invalid `Expires` Attribute As Session Cookies

      `java.net.HttpCookie` will ignore the value of the `Expires` attribute of a cookie, if the
      attribute value cannot be parsed into a valid date. Such cookies do not expire till the end of
      the session. This new behaviour matches the [Expires attribute specification of
      RFC-6265](https://www.rfc-editor.org/info/rfc6265#section-5.2.1).
      
      Previously, the failure to parse the value of the `Expires` attribute would have resulted in
      the cookie being discarded.

    JDK-8387598: Specification of `sun.net.httpserver.maxReqTime` and `sun.net.httpserver.maxRspTime` System Properties Corrected to State Their Values are in Seconds

      The specification of the `sun.net.httpserver.maxReqTime` and `sun.net.httpserver.maxRspTime`
      system properties, which are used to configure the HTTP server in the `jdk.httpserver` module,
      has been corrected to state that their values are in seconds. This change updates the
      specification to match the long standing behaviour in the implementation.

security-libs/java.security:

    JDK-8387123: LuxTrust Global Root CA removed

      The following root certificate has been removed from the `cacerts` keystore: ``` + alias name
      "luxtrustglobalrootca [jdk]"   Distinguished Name: CN=LuxTrust Global Root, O=LuxTrust s.a.,
      C=LU
      
      ```

core-libs/java.text:

    JDK-8386200: ListFormat Single Quote Handling Fixed

      The JDK reference implementation for [java.text.ListFormat] is no longer affected by
      [java.text.MessageFormat] single quote escaping semantics. For example, previously, a list
      pattern such as " '{0}', {1} " may have incorrectly formatted `List.of("bar", "foo")` as: "
      {0}, bar ". ListFormat is now updated to always treat single quotes as literal characters when
      read from a pattern.
      
      This change is observable for ListFormat patterns that contain single quotes. As a result, it
      primarily affects application-supplied custom patterns that contain them.

    JDK-8385834: Custom ListFormat Patterns Are Validated More Strictly

      [java.text.ListFormat.getInstance(String[])] now validates custom list format patterns more
      strictly. Only the exact placeholders "{0}", "{1}", and "{2}" are accepted, and "{2}" is
      accepted only in the three-element pattern. Patterns with duplicate placeholders or curly
      braces outside valid placeholders now cause an [IllegalArgumentException] to be thrown.
      
      This change affects only application-supplied custom patterns passed to
      [ListFormat.getInstance(String[])]. Locale-derived ListFormat instances are not affected.

security-libs/javax.net.ssl:

    JDK-8301626: Capture Named Group information in TLSHandshakeEvent

      The `jdk.TLSHandshakeEvent` JFR  event now records the named group that is negotiated in a TLS
      handshake. A new field named `namedGroup` has been added to the event. 

security-libs/javax.crypto:

    JDK-8371305: Significant performance gains in X25519 key agreement and Ed25519 signature algorithms

      The underlying `Curve25519` operations have been provided intrinsics in this release which has
      resulted in noticeable performance improvements for the `X25519` key agreement algorithm and
      the `Ed25519` signature algorithm as follows:
      
      1. x86-64 architecture    - `X25519` Key generation: +19%    - `X25519` Decapsulation: +19%   
      - `X25519` Encapsulation: +19%    - `Ed25519` Key generation: +20%    - `Ed25519` Signing:
      +19%    - `Ed25519` Verification: +16%
      
      1. AArch64 architecture    - `X25519` Key generation: +10%    - `X25519` Decapsulation: +9%   
      - `X25519` Encapsulation: +9%    - `Ed25519` Key generation: +15%    - `Ed25519` Signing: +12%
      - `Ed25519` Verification: +12%

    JDK-8385304: Significant performance gains in X25519 key agreement and Ed25519 signature algorithms

      The underlying `Curve25519` operations have been provided intrinsics in this release which has
      resulted in noticeable performance improvements for the `X25519` key agreement algorithm and
      the `Ed25519` signature algorithm as follows:
      
      1. x86-64 architecture    - `X25519` Key generation: +19%    - `X25519` Decapsulation: +19%   
      - `X25519` Encapsulation: +19%    - `Ed25519` Key generation: +20%    - `Ed25519` Signing:
      +19%    - `Ed25519` Verification: +16%
      
      1. AArch64 architecture    - `X25519` Key generation: +10%    - `X25519` Decapsulation: +9%   
      - `X25519` Encapsulation: +9%    - `Ed25519` Key generation: +15%    - `Ed25519` Signing: +12%
      - `Ed25519` Verification: +12%


ALL FIXED ISSUES, BY COMPONENT AND PRIORITY:

client-libs/2d:
  (P2) JDK-8386671: Raster factory methods fail to throw specified exceptions for invalid bandOffsets and bankIndices
  (P3) JDK-8041911: media sizes with width > height are not supported by the java printing api
  (P3) JDK-8385100: Null pointer dereference in java.desktop/windows/classes/sun/print/Win32PrintJob.java:606 and other PrintJob implementations
  (P4) JDK-8387375: Update package sun.font to use instanceof pattern variable
  (P5) JDK-8386109: Add missing @Override annotations in "javax.print.*" packages

client-libs/java.awt:
  (P4) JDK-8291470: Description change for mouseMoved method in java.awt.event.MouseMotionAdapter
  (P4) JDK-8387298: IS_WIN2000 and IS_WINXP macros are obsolete
  (P4) JDK-8387675: IS_WINVISTA macro is obsolete
  (P4) JDK-8387465: Remove isXP() function from WPathGraphics.java

client-libs/javax.accessibility:
  (P4) JDK-8385302: Open source accessibility AWT tests
  (P4) JDK-8387674: Remove isXP() function from jabswitch.cpp
  (P4) JDK-8381236: VoiceOver Fails to Identify Component After Switching Windows

client-libs/javax.imageio:
  (P4) JDK-8384512: BMPImageWriter uses integer division before Math.ceil causing incorrect calculation

client-libs/javax.sound:
  (P4) JDK-8386273: Some javax/sound/sampled tests fail on systems with high CPU core number and running with high concurrency

client-libs/javax.swing:
  (P3) JDK-8386795: Swing specification needs caveats on L&F rendering behaviors 
  (P4) JDK-8387693: Remove unused method
  (P4) JDK-8386056: Test JFileChooser/HTMLFileName.java doesn't run in Nimbus and Motif

core-libs:
  (P4) JDK-8386255: Float16Vector NaN canonicalization for hashCode computation
  (P4) JDK-8386322: Float16Vector.toString should render lane values using Float16.toString

core-libs/java.lang:
  (P4) JDK-8386960: BUILD_LIBVERIFY remove special warning settings
  (P4) JDK-8386965: Data race on java.lang.Class.reflectionFactory field
  (P4) JDK-8388183: Wrong example in documentation for String.toLowerCase()
  (P5) JDK-8365887: Outdated comments in String::decode

core-libs/java.lang.classfile:
  (P3) JDK-8386700:  Class-File API: StackMapGenerator.setLocalsFromArg leaves stale locals, generating invalid stack maps
  (P4) JDK-8386802: ClassFile Util.entryList should consider non-RandomAccess lists

core-libs/java.lang.foreign:
  (P4) JDK-8388347: Remove enablePreview from TestEnableNativeAccessJarManifest
  (P4) JDK-8386848: testBool in java/foreign/normalize/TestNormalize.java fails on Zero VM with expected [true] but found [false]

core-libs/java.lang.invoke:
  (P3) JDK-8378796: java.lang.runtime bootstrap methods missing lookup validation

core-libs/java.lang:reflect:
  (P4) JDK-8382841: Revert annotation parsing changes from libgraal
  (P4) JDK-8384833: Start of release updates for JDK 28

core-libs/java.net:
  (P4) JDK-8380967: Canceled HttpClient.sendAsync futures throw inconsistent exceptions
  (P4) JDK-8355412: com/sun/net/httpserver/Test9a.java failed on windows trying to delete file: java.nio.file.FileSystemException: The process cannot access the file because it is being used by another process 
  (P4) JDK-8385906: DirPermissionDenied.java uses chmod instead of Java APIs for changing permissions
  (P4) JDK-8387273: Enhance httpserver logging to log when maxConnections is reached
  (P4) JDK-8380549: HttpCookie.expiryDate2DeltaSeconds returns 0 on parse failure, causing immediate cookie expiration
  (P4) JDK-8386985: PacketSpaceManagerTest failed with AssertionError; A race condition may cause packetSent to mistakenly skip rescheduling of the transmitter task
  (P4) JDK-8386989: QuicEndpoint.ClosedConnection should not use QuicTimerQueue::offer
  (P4) JDK-8383248: Reduce buffer allocations for HTTP headers instead of allocating 16KB per request
  (P4) JDK-8387598: sun.net.httpserver.maxReqTime and maxRspTime properties expect values in seconds
  (P4) JDK-8386595: Two java/net/MulticastSocket tests fail on machines with no ipv6 address other than loopback

core-libs/java.nio:
  (P4) JDK-8364322: (fs) fchmodat support for AT_SYMLINK_NOFOLLOW flag too pessimistic on Linux
  (P4) JDK-8387704: java/nio/file/DirectoryStream/SecureDS.java failing with AccessDeniedException

core-libs/java.nio.charsets:
  (P4) JDK-8386810: Improve debuggability of test/jdk/sun/nio/cs/TestStringCodingUTF8.java

core-libs/java.text:
  (P4) JDK-8387753: Improve SimpleDateFormat.set2DigitYearStart() documentation
  (P4) JDK-8386200: ListFormat incorrectly escapes single quotes
  (P4) JDK-8385834: Tighten ListFormat.getInstance(String[]) behavior for invalid placeholders

core-libs/java.time:
  (P4) JDK-8386328: TemporalField.adjustInto Javadoc incorrectly uses 1-argument method signatures

core-libs/java.util.concurrent:
  (P3) JDK-8385830: ForkJoinTask#get may swallow caller thread's interrupt flag
  (P3) JDK-8386085: Livelock in AbstractQueuedSyncronizer.cleanQueue() when multiple threads do tryAcquire() with a short timeout and no permits available
  (P4) JDK-8386372: Add ConcurrentSkipListMap to map stress test
  (P4) JDK-8377034: Enable full JSR166TestCase.java test for s390x

core-libs/java.util.jar:
  (P3) JDK-8385924: GZIPInputStream.read() behaves differently on some Java versions
  (P4) JDK-8385891: Introduce a test for GZIPInputStream whose underlying stream is a blocking InputStream

core-libs/java.util:collections:
  (P4) JDK-6356745: (coll) Add PriorityQueue(Collection, Comparator)

core-libs/java.util:i18n:
  (P4) JDK-8380993: [REDO] Incorrect Interpretation of POSIX TZ Environment Variable on AIX
  (P4) JDK-8387041: Add a URL link to BCP 47 in the Locale class
  (P4) JDK-8387259: Clarify extlang in Locale composition description
  (P4) JDK-8387185: Locale does not respect numeric singletons
  (P4) JDK-8387253: Locale incorrectly accepts extlangs after non 2*3ALPHA lang
  (P4) JDK-8387261: Locale.LanguageRange weight validation issues
  (P4) JDK-8387795: Remove hard coded set of locales in LocaleData
  (P4) JDK-8387455: Restrict legacy Locale compatibility handling to exact matches

core-libs/javax.lang.model:
  (P4) JDK-8384838: Add SourceVersion.RELEASE_28

core-libs/javax.naming:
  (P3) JDK-8154193: Move jdk.naming.rmi module to platform class loader
  (P4) JDK-8386807: com/sun/jndi/ldap/Connection.java references the wrong exception

core-libs/javax.script:
  (P4) JDK-8387044: test/jdk/javax/script/CommonSetup.sh incorrectly sets isCygwin=true for MSys/MinGW

core-svc:
  (P4) JDK-8386593: AArch64: serviceability/sa/TestJhsdbJstackMixedWithXComp.java fails on Ubuntu 26.04

core-svc/debugger:
  (P4) JDK-8387640: vmTestbase/nsk/jdi/EventRequestManager/threadStartRequests/thrstartreq001/TestDescription.java fails intermittently
  (P4) JDK-8327967: vmTestbase/nsk/jdi/EventRequestManager/threadStartRequests/thrstartreq002/TestDescription.java fails intermittently

core-svc/java.lang.management:
  (P4) JDK-8387142: BUILD_LIBMANAGEMENT_EXT remove special warning settings

core-svc/javax.management:
  (P4) JDK-8385839: JMX config file correction

core-svc/tools:
  (P4) JDK-8385964: AttachProvider docs update: 'doors' to 'socket'
  (P4) JDK-8387996: Remove reference to -d64 from serviceability tool manpages

globalization/translation:
  (P3) JDK-8385927: JDK 27 RDP1 L10n resource files update

hotspot/compiler:
  (P2) JDK-8387378: [BACKOUT] C2: SIGSEGV in compiled code due to missing ctrl
  (P2) JDK-8386831: Build fails due to bad copyright header in test/hotspot/jtreg/compiler/onSpinWait/TestOnSpinWaitPPC64.java
  (P2) JDK-8385833: C2 Vector API: assert(false) failed: infinite loop in PhaseIterGVN::transform_old
  (P2) JDK-8386155: C2 Vector API: missing truncation in VectorNode::push_through_replicate
  (P2) JDK-8387073: C2: StoreNode::Ideal wrongly optimizes away scalar store before masked vector store
  (P2) JDK-8378719: CompiledDirectCall::set_to_interpreted() fails with guarantee(chk == -1 || chk == 0) failed: Field too big for insn
  (P3) JDK-8388406: [BACKOUT] C2: crash in compiled code due to zero division because of widened CastII
  (P3) JDK-8387395: [REDO] C2: SIGSEGV in compiled code due to missing ctrl
  (P3) JDK-8335163: [s390x] test failure - PrintClasses.java
  (P3) JDK-8386656: C2 AVX512: -XX:-UseCountTrailingZerosInstruction causes assert(UseCountTrailingZerosInstruction) failed: tzcnt instruction not supported
  (P3) JDK-8374783: C2 compilation asserts with "slice of address and input slice don't match"
  (P3) JDK-8386482: C2 CountedLoopConverter::filtered_type_from_dominators: assert(_base == Int) failed: Not an Int
  (P3) JDK-8386475: C2 x64: -XX:-UseBMI2Instructions is broken for AVX-512
  (P3) JDK-8387328: C2: A Phi must not have a narrower Type than its inputs
  (P3) JDK-8387411: C2: assert((in_vt->isa_pvectmask() == nullptr) == (vt->isa_pvectmask() == nullptr)) failed: Both BVectMask, or both NVectMask, or both PVectMask
  (P3) JDK-8386503: C2: assert(adr_type == nullptr || adr_type->isa_aryptr() != nullptr) failed: unexpected type-unsafe store
  (P3) JDK-8383767: C2: assert(curr_ctrl->in(0)->Opcode() == Op_If) failed: unexpected node MemBarStoreStore
  (P3) JDK-8387149: C2: assert(regs[i] != regs[j]) failed: regs[2] and regs[3] are both: v24
  (P3) JDK-8386830: C2: CountedLoopConverter::filtered_type wrongly ignores nullptr contributions to type union/meet
  (P3) JDK-8380166: C2: crash in compiled code due to zero division because of widened CastII
  (P3) JDK-8387015: C2: crash with "named projection 2 not found" from ArrayCopyNode::finish_transform() for clone
  (P3) JDK-8375694: C2: Dead loop constructed with CastPP in late inlining
  (P3) JDK-8385855: C2: IfNode::filtered_int_type should only allow CmpI
  (P3) JDK-8387012: C2: PhaseVector::expand_vunbox_node should not inject the payload type into the load
  (P3) JDK-8382536: C2: sharpen_type_after_if: assert(val->find_edge(con) > 0) failed: mismatch 
  (P3) JDK-8385420: C2: SIGSEGV in compiled code due to missing ctrl
  (P3) JDK-8386591: C2: wrong result because of broken truncation check in CountedLoopConverter::TruncatedIncrement::build
  (P3) JDK-8385651: HotCodeSampler crashes with JFR enabled
  (P3) JDK-8388080: Increase static size of some stubs for APX code
  (P3) JDK-8379555: Test compiler/igvn/ExpressionFuzzer.java crashed with -Xcomp: Not monotonic
  (P4) JDK-8379327: 128-bit multiplication uses two multiply instructions on x86_64
  (P4) JDK-8387652: [aarch64] Fallback mode for narrow klass decoding
  (P4) JDK-8387184: [PPC64] C1 logic operations should support generic constants 
  (P4) JDK-8388120: [s390x] c2: c_return_value is redundant 
  (P4) JDK-8388439: [s390x] LoadNKlass rule doesn't kill CC
  (P4) JDK-8386474: Aarch64: Correct static_assert((N & (N - 1)) == 0
  (P4) JDK-8388008: AArch64: data race accessing CodeHeap::high in CodeCache::max_distance_to_non_nmethod
  (P4) JDK-8386669: AArch64: Distinguish ldr and ldrw literal instructions in NativeInstruction
  (P4) JDK-8381766: AArch64: extend MacroAssembler increment/decrement/and/or to use 24-bit immediate operands
  (P4) JDK-8382135: AArch64: HotCodeCollectorMoveFunction.java fails intermittently
  (P4) JDK-8383905: AArch64: Improve code generation for long vector multiply
  (P4) JDK-8387388: AArch64: Optimize reduceLanes MUL op with ext instruction
  (P4) JDK-8387081: AArch64: Refactor MacroAssembler::cmpxchg
  (P4) JDK-8386808: AArch64: Sync aarch64_vector.ad with aarch64_vector_ad.m4 after JDK-8370691
  (P4) JDK-8370691: Add new Float16Vector type and enable intrinsification of vector operations supported by auto-vectorizer
  (P4) JDK-8388381: appcds/aotClassLinking/AddReads.java fails with assert(stub_id != StubId::NO_STUBID) failed: blob continuation_blob (stub gen) contains no stubs! when run with -XX:-VMContinuations
  (P4) JDK-8387937: C1: aarch64: two-arg add_debug_info_for_branch looks obsolete
  (P4) JDK-8386163: C2 Vector API: assert(collect_unique_inputs(n, inputs) == 1) failed: not unary
  (P4) JDK-8387698: C2 VectorAPI: Float16Vector::indexInRange hits: fatal error: Not monotonic
  (P4) JDK-8386762: C2: Allow inlining cold methods 
  (P4) JDK-8381362: C2: assert(_late_inlines.length() == 0 || IncrementalInlineMH || IncrementalInlineVirtual) failed: not empty
  (P4) JDK-8387197: C2: Improve klass_ptr_type in GraphKit::gen_instanceof() similarly to GraphKit::gen_checkcast()
  (P4) JDK-8384963: C2: Incorrect uint constant match mishandles negative values in vectors
  (P4) JDK-8379816: C2: Possible integer overflow in BCEscapeAnalyzer::iterate_blocks
  (P4) JDK-8387721: C2: Print Node barrier data
  (P4) JDK-8387940: C2: Stress allocation elimination failures
  (P4) JDK-8386597: C2: TestTruncationWrapFuzzer.java‎ for CountedLoop detection of subword truncated iv
  (P4) JDK-8380035: compiler/intrinsics/TestReturnOopSetForJFRWriteCheckpoint.java crashes on s390x
  (P4) JDK-8385945: Deprecate the CompilationMode flag
  (P4) JDK-8387747: Enable long vector multiply IR tests for RISC-V
  (P4) JDK-8384847: Fix documentation typos around ML-KEM and ML-DSA intrinsic code for aarch64
  (P4) JDK-8384606: HotCodeHeap tests require C2
  (P4) JDK-8370870: IGV: add simple regression tests for graph dumping
  (P4) JDK-8349563: Improve AbsNode::Value() for integer types
  (P4) JDK-8387414: Insufficient feature gate in vm_version_x86 for UseKyberIntrinsics
  (P4) JDK-8387334: IR Framework tests should run in jtreg driver mode
  (P4) JDK-8388186: java  -XX:UseSSE=2   -XX:+EnableX86ECoreOpts   -version crashes with assert(UseAVX > 0) failed: requires some form of AVX
  (P4) JDK-8387017: java/lang/instrument/GetObjectSizeIntrinsicsTest.java fails with Error evaluating expression: invalid boolean value: `null' for expression `vm.opt.VerifyOops'
  (P4) JDK-8376803: Jtreg test compiler/vectorization/TestVectorAlgorithms.java fails after JDK-8373026
  (P4) JDK-8386852: Lower peak throughput with AOTCache
  (P4) JDK-8387660: Oop verification is sometimes wrong 
  (P4) JDK-8387758: Oop verification wrong in StubGenerator::generate_generic_copy
  (P4) JDK-8373487: Out-of-bounds access in AlignmentGapAccess test
  (P4) JDK-8386637: PPC64: Implement Thread.onSpinWait() intrinsic and SpinPause() using SMT priority hints
  (P4) JDK-8386879: PPC64: or_unchecked in OrI instructs can emit unintended SMT priority hints
  (P4) JDK-8387019: PPC64: Remove postalloc_expand from cmovI/cmovL bso_reg_conLvalue0 nodes
  (P4) JDK-8387210: PPC64: Remove postalloc_expand from EncodePKlass and DecodeNKlass nodes
  (P4) JDK-8387016: PPC64: Remove postalloc_expand from float/double compare nodes
  (P4) JDK-8385166: PPC: C2: c_return_value and return_value should not set 2nd OptoRegPair for Op_RegI
  (P4) JDK-8388477: Replace false with 0 in IntelJccErratum::compute_padding
  (P4) JDK-8386460: Report AOT code loading failure before log of AOT code cache content
  (P4) JDK-8388456: RISC-V: Add UseZvbb to RVA23U64Profile
  (P4) JDK-8388035: RISC-V: Auto-enable Zfa extension features
  (P4) JDK-8386945: RISC-V: Auto-enable Zvbb extension features
  (P4) JDK-8388075: RISC-V: Auto-enable Zvbc extension features
  (P4) JDK-8386161: RISC-V: Auto-enable Zvkn/Zvkg extension features
  (P4) JDK-8388399: RISC-V: Enable vector FP16 conversions with Zvfhmin
  (P4) JDK-8368180: RISC-V: Remove redundant ext_Zicboz.enable_feature()
  (P4) JDK-8387078: RISC-V: x27 can be allocated in CompressedOops mode
  (P4) JDK-8385746: S390: Improve receiver type profiling reliability
  (P4) JDK-8387638: Some compiler/vectorization/runner/* tests timed out in Driver mode
  (P4) JDK-8387003: Stale doc comment in TrustFinalFields.java after JDK-8376777
  (P4) JDK-8381809: Template Framework Library: add Float16Vector type
  (P4) JDK-8369020: Test compiler/intrinsics/TestLongUnsignedDivMod.java completed and timed out
  (P4) JDK-8384251: Test java/lang/instrument/GetObjectSizeIntrinsicsTest.java crashed: fatal error: Not compilable at tier 1: CodeBuffer overflow
  (P4) JDK-8387622: Tests producing many small output writes are extremely slow on Windows
  (P4) JDK-8378892: TestTrampoline fails on Windows AArch64
  (P4) JDK-8385588: Tune APX support in C2 backend
  (P4) JDK-8385119: Unify boolean value normalization 
  (P4) JDK-8382052: VectorAPI: Optimize the lanewise BITWISE_BLEND for AArch64
  (P4) JDK-8381618: VectorExpressionFuzzer.java: enable test for all platforms
  (P5) JDK-8388358: HotCodeHeap should throw warning when enabled without C2
  (P5) JDK-8381880: Test compiler/c1/TestTooManyVirtualRegistersMain.java uses wrong class in CompileCommand

hotspot/gc:
  (P2) JDK-8386958: Build failure due to incorrect copyright text in src/hotspot/share/gc/shenandoah/ files
  (P2) JDK-8225186: G1: Compiler code cache requested GC deadlocks while WhiteBox has control
  (P2) JDK-8386846: G1: Crash in ~ThreadTotalCPUTimeClosure inside G1ServiceThread during CDS abort
  (P2) JDK-8387265: G1: Shutdown during concurrent cycle leaves SATB queues in inconsistent state
  (P3) JDK-8386332: G1: Cleanup pause incorrectly updates old gen MemoryPoolMXBean.getCollectionUsage()
  (P3) JDK-8387206: G1: Code root verification crashes because of stale table scanner
  (P3) JDK-8385369: G1: Concurrent Cleanup For Next Mark accesses uncommitted bitmaps after region uncommit
  (P3) JDK-8358342: G1: G1CodeRootSet performance breaks down on even moderate load
  (P3) JDK-8382627: Shenandoah: assert(old_reserve_result + young_reserve_result <= old_available + young_available) failed
  (P3) JDK-8387042: Shenandoah: Build time regression with LBE
  (P4) JDK-8386707: [BACKOUT] ZGC: Incorrect object undo in relocation race for relocation workers
  (P4) JDK-8388285: [s390] compP_reg_mem is missing the barrier_data() == 0 predicate
  (P4) JDK-8388284: [s390] resolve_jobject uses wrong branch condition after tmll
  (P4) JDK-8386098: Add empty MemRegion precondition to CardTable methods
  (P4) JDK-8387400: Force-inline Devirtualizer methods
  (P4) JDK-8386247: G1: Cleanup naming and type use of G1CollectionSet class members and methods
  (P4) JDK-8387303: G1: Convert G1ConcurrentRefine::_num_threads_wanted to use the Atomic API
  (P4) JDK-8387490: G1: Dynamically creating worker threads exposes memory visibility race
  (P4) JDK-8379983: G1: Fix up friend class declarations
  (P4) JDK-8385893: G1: G1CollectedHeap::_old_marking_cycles_completed should be an Atomic
  (P4) JDK-8385903: G1: G1CollectionSet::_num_regions needs to be Atomic
  (P4) JDK-8385899: G1: G1ConcurrentMarkThread::_state should be Atomic
  (P4) JDK-8385873: G1: G1ConcurrentRefineSweepTask::_sweep_completed should be Atomic
  (P4) JDK-8387322: G1: G1CSetCandidateGroupList::_num_regions should be Atomic
  (P4) JDK-8385901: G1: G1FullGCPrepareTask::_has_free_compaction_targets should be Atomic
  (P4) JDK-8387754: G1: Let Eden/SurvivorRegions use Atomic instead of volatile
  (P4) JDK-8387764: G1: Let G1CollectedHeap::_summary_bytes_used use the Atomic API
  (P4) JDK-8387760: G1: Let G1ConcurrentMark::_chunks_in_chunk_list use the Atomic API
  (P4) JDK-8387765: G1: Let G1HeapRegionType::_tag use the Atomic API
  (P4) JDK-8371720: G1: Move concurrent mark initialization to first concurrent start pause
  (P4) JDK-8387083: G1: Remove redundant NMT tagging from G1RegionToSpaceMapper
  (P4) JDK-8387751: G1: Remove volatile from G1CollectorState::_initiate_conc_mark_if_possible
  (P4) JDK-8381128: G1: Tighten accesses to TAMS/TARS
  (P4) JDK-8382335: gc/stress/jfr/TestStressAllocationGCEventsWithShenandoah.java intermittently fails with OOME
  (P4) JDK-8386604: GenShen: _do_old_gc_bootstrap could become stuck after a full GC
  (P4) JDK-8386288: GenShen: assert(region->get_top_before_promote() == nullptr) failed: Cannot add region scheduled for in-place-promotion to the collection set
  (P4) JDK-8386204: GenShen: Bootstrap cycles are misidentified in logs
  (P4) JDK-8386202: Genshen: Regulator thread reporting hiccup times proportional to safepoint times
  (P4) JDK-8385933: GenShen: Remove ShenandoahAgingCyclePeriod
  (P4) JDK-8387391: hotspot_gc_shenandoah should include gtests
  (P4) JDK-8386254: Parallel: Adjust Pointers should use stripes in young spaces
  (P4) JDK-8386705: Parallel: Allow NUMA with explicit huge pages and adaptive resizing
  (P4) JDK-8386480: Parallel: Avoid Triggering GC Before VM Initialization Completes
  (P4) JDK-8387387: Parallel: Clean up startup allocation locking
  (P4) JDK-8387129: Parallel: Wrong TaskTerminator in ParallelScavengeRefProcProxyTask
  (P4) JDK-8385454: Provide more NUMA related information in hsinfo/hserr files
  (P4) JDK-8387742: Reclaim CodeCache nmethods more promptly
  (P4) JDK-8385989: Remove mention of obsoleted/removed ParallelRefProcEnabled in documentation
  (P4) JDK-8386323: Remove unused MemoryPool allocation availability state
  (P4) JDK-8385728: Serial: Check empty MemRegion in maintain_old_to_young_invariant 
  (P4) JDK-8387581: Serial: Clean up startup allocation locking
  (P4) JDK-8388139: Shenandoah: -XX:+VerifyOops fails on forwarded objects with COH
  (P4) JDK-8386512: Shenandoah: Add a diagnostic option to facilitate testing pinned regions
  (P4) JDK-8382213: Shenandoah: Drop weak root processing flags earlier
  (P4) JDK-8387293: Shenandoah: Improve gc+stats logging for generational mode
  (P4) JDK-8386312: Shenandoah: Incorrect assertion in ShenandoahAllocRate uses is_locked() instead of owned_by_self()
  (P4) JDK-8385596: Shenandoah: Introduce per-partition allocators with FreeSet API boundary
  (P4) JDK-8385592: Shenandoah: Introduce ShenandoahAllocator interface to encapsulate memory allocation
  (P4) JDK-8387907: Shenandoah: Marking loop prefetch 
  (P4) JDK-8386798: Shenandoah: Missing load barrier when making assertions about mark bitmap
  (P4) JDK-8380390: Shenandoah: Missing store barrier when resetting bitmaps
  (P4) JDK-8388173: Shenandoah: Overly strict assertion failure in CAS barrier
  (P4) JDK-8386992: Shenandoah: Pad hot atomic counters to avoid false sharing on the allocation path
  (P4) JDK-8385732: Shenandoah: Penalize triggering heuristics for out-of-cycle degenerated
  (P4) JDK-8387047: Shenandoah: Purge SBS::resolve_forwarded
  (P4) JDK-8387806: Shenandoah: Reduce allocation-path contention from ShenandoahAllocRate byte accounting
  (P4) JDK-8388058: Shenandoah: Refactor arraycopy_work
  (P4) JDK-8385594: Shenandoah: Remove legacy allocation methods from ShenandoahFreeSet
  (P4) JDK-8386910: Shenandoah: remove redundant logging of free set status
  (P4) JDK-8386547: Shenandoah: remove unused variables in Freeset reserve_regions
  (P4) JDK-8385643: Shenandoah: Rework mark loop inlining
  (P4) JDK-8387961: Shenandoah: Rework marked objects loop prefetch 
  (P4) JDK-8387713: Shenandoah: Rework native card table barrier
  (P4) JDK-8387260: Shenandoah: ShenandoahOldGeneration::_promoted_reserve should be atomic
  (P4) JDK-8386292: Shenandoah: Simplify and strengthen C1 barriers
  (P4) JDK-8387707: Shenandoah: Simplify reserved queue handling in mark loop
  (P4) JDK-8387463: Shenandoah: Use direct oop_oop_iterate methods for known types in marking loops
  (P4) JDK-8386872: Test gc/shenandoah/generational/TestOldGrowthTriggers still fails intermittently
  (P4) JDK-8388312: ZGC: Diagnostic VM option `ZIndexDistributorStrategy` is not validated
  (P4) JDK-8387467: ZGC: Use shared thread-local _nmethod_disarmed_guard_value
  (P5) JDK-8385562: G1: Remove obsolete young_list prefix in identifiers used before JDK-8150721
  (P5) JDK-8385961: Shenandoah: incorrect assert ordering in ShenandoahFreeSet::allocate_contiguous non-humongous path
  (P5) JDK-8386252: Shenandoah: Polish LRB argument preparation
  (P5) JDK-8385975: Shenandoah: remove leftover ShenandoahPacer declarations in ShenandoahHeap

hotspot/jfr:
  (P3) JDK-8386485: JFR: RecordingFile::write overwrites original file
  (P3) JDK-8385574: JFR: Redaction should check file
  (P3) JDK-8385957: JFR: Sensitive command-line arguments still in environment variable values
  (P4) JDK-8387697: Avoid using os::Linux::query_accurate_process_memory_info in JFR
  (P4) JDK-8388316: Make jdk/jfr/event/runtime/TestResidentSetSizeEvent.java intermittent after JDK-8387697
  (P4) JDK-8386345: Remove redundant @requires from TestGarbageCollectionEventWithZMinor
  (P4) JDK-8385892: TestResidentSetSizeEvent fails with RuntimeException: Should be non-zero: expected 0 > 0

hotspot/jvmti:
  (P3) JDK-8387718: JVMTI GetLocal/SetLocal: slot bounds check overflows for long/double slots
  (P3) JDK-8388464: New test serviceability/jvmti/GetLocalVariable/GetSetLocalSlotOverflow.java is failing with virtual threads
  (P3) JDK-8379144: serviceability/jvmti/vthread/VThreadTest/VThreadTest.java timed out with --enable-preview
  (P4) JDK-8383879: assert(_cur_stack_depth == num_frames) failed: cur_stack_depth out of sync _cur_stack_depth: 9 num_frames: 10

hotspot/runtime:
  (P3) JDK-8387580: [S390x] OpenJDK build crashes with SIGSEGV in HashMap::resize()
  (P3) JDK-8384557: Allow configuration of the JVM's temporary directory on Linux
  (P3) JDK-8385806: Assert failed when running Skynet.java with continuation trace logging enabled
  (P3) JDK-8386562: JVM crashes when StackMapTable attribute is too long
  (P3) JDK-8385661: jvmti/vthread/ThreadStateTest/ThreadStateTest.java triggers assert(f.pc() == _chunk->pc()) failed
  (P3) JDK-8387757: Man pages still say CompactObjectHeaders is not default
  (P3) JDK-8378049: test/hotspot/jtreg/runtime/NMT/NMTPrintMallocSiteOfCorruptedMemory.java failing on Windows
  (P3) JDK-8385655: Timeout in java/lang/Thread/virtual/KlassInit.java
  (P3) JDK-8386116: vm/jvmti/StopThread/stop001/stop00103/stop00103a.html trips assert(!java_lang_Thread::is_in_vthread_transition(vthread)) failed
  (P4) JDK-8387745: [aot] Several tests fail because a SoftReferenceKey cannot be archived 
  (P4) JDK-8388117: [s390x] is_z_illtrap should recognise all forms 
  (P4) JDK-8388016: [s390x] Remove the alignment from stubGenerator
  (P4) JDK-8386586: [s390x] TestSyncOnValueBasedClassEvent.java fails due to incorrect branch
  (P4) JDK-8365575: AOT cache should include classes verified using "fail over" verification
  (P4) JDK-8386685: CDS load on Windows/ARM64 using base address set to 0x5_0000_0000 causes a JVM crash
  (P4) JDK-8386456: Comments at the declaration of frame::frame_alignment are incorrect on some platforms
  (P4) JDK-8386922: Convert TraceRelocator to Unified Logging
  (P4) JDK-8387637: Dead code for upwards interpreter stacks
  (P4) JDK-8388360: Dead sharedRuntime.cpp stub name code
  (P4) JDK-8387302: Disable reserved stack areas for critical sections on Windows AArch64
  (P4) JDK-8386448: Enable dumping of AVX registers (YMM/ZMM and K registers) in JVM fatal error logs
  (P4) JDK-8387262: Enum constant frame::pc_return_offset is always zero
  (P4) JDK-8385586: Fix race in Windows map_or_reserve_memory_aligned using VirtualAlloc2 and MapViewOfFile3
  (P4) JDK-8386546: Fix race when reserving memory with NUMA interleaving on Windows
  (P4) JDK-8386592: Gtest os.trim_native_heap_vm sometimes fails in subtest os.trim_native_heap_vm
  (P4) JDK-8387788: JNI spec has stale reference to removed Thread.stop method
  (P4) JDK-8387794: JNI specification maintenance
  (P4) JDK-8387404: Make ClassLoaderData::oops_do inlineable
  (P4) JDK-8385427: Make unified logging checks in tests tolerant of added spaces
  (P4) JDK-8386476: NMT: Large page reservation not attributed to the correct memory tag
  (P4) JDK-8388122: NMT: Remove unused comm_size variable from RegionsTree::visit_committed_regions
  (P4) JDK-8388188: NMT: Remove unused local variable in RegionIterator::next_committed
  (P4) JDK-8387048: NMTCommittedVirtualMemoryTracker.test_committed_virtualmemory_region_vm fails due to found_stack_top
  (P4) JDK-8387991: Optimize execution of runtime/Thread/TestSpinPause.java
  (P4) JDK-8286300: Port JEP 425 to S390X
  (P4) JDK-8386659: PPC: cleanup dtrace leftovers part 2
  (P4) JDK-8384844: Remove expired flags in JDK 28
  (P4) JDK-8387633: Remove UnlockExperimentalVMOptions for COH in CDS build
  (P4) JDK-8387381: RISC-V: assert failed with fastdebug build on systems with different core types
  (P4) JDK-8386344: runtime/StackGuardPages/TestStackGuardPages build failure after JDK-8303612
  (P4) JDK-8303612: runtime/StackGuardPages/TestStackGuardPagesNative.java fails with exit code 139
  (P4) JDK-8387258: Test jdk/jfr/event/runtime/TestResidentSetSizeEvent.java failed on Windows: The size should be less than or equal to peak
  (P4) JDK-8380750: Test runtime/cds/appcds/TestSerialGCWithCDS.java#id1 failed: StringIndexOutOfBoundsException
  (P4) JDK-8387701: TestAVXRegisterDump: guarantee(how == 0) failed: test guarantee
  (P4) JDK-8386130: TestPrintMethodData.java failing with VirtualThread as main thread
  (P4) JDK-8387214: TraceJavaAssertions is unused
  (P4) JDK-8385991: Use StringTable's statistics method in Dictionary
  (P4) JDK-8386150: VtablesTest.java fails when main thread is a Virtual Thread

hotspot/svc:
  (P4) JDK-8387625: Add "dt_socket" to `CheckedFeatures.notImplemented` for Windows/ARM64
  (P4) JDK-8387148: Linux perf map should record individual vtable trampolines
  (P4) JDK-8386325: The AttachListener does not do proper exception handling

hotspot/svc-agent:
  (P4) JDK-8385723: Intermittent failure of serviceability/sa/ClhsdbInspect.java
  (P4) JDK-8386124: Test serviceability/sa/TestG1HeapRegion.java failed: Address of G1HeapRegion does not match
  (P4) JDK-8382338: Various serviceability agent tests fail on Linux x86_64 with LTO enabled
  (P4) JDK-8386944: Warning message was not printed on PAC enabled AArch64 Linux

hotspot/test:
  (P4) JDK-8386107: arm32: libSuspendInCritical jtreg library fails to link

infrastructure:
  (P3) JDK-8386844: Update to use jtreg 8.3
  (P4) JDK-8384848: Update JCov for class file version 72

infrastructure/build:
  (P2) JDK-8386551: Windows build broken because of MSys2/Make update
  (P3) JDK-8387315: Add macosx-aarch64 bootcycle build profiles
  (P3) JDK-8387013: Update GitHub Actions
  (P4) JDK-8386878: [make] BUILD_LIBZIP_EXCLUDES seems to be unused
  (P4) JDK-8385660: Audit and remove unnecessary lint categories from $DISABLED_WARNINGS
  (P4) JDK-8387403: BUILD_LIBJAVA remove special warning settings
  (P4) JDK-8386625: Devkit could not be built on glibc 2.43+
  (P4) JDK-8387596: DEVKIT_LIB_DIR is unused
  (P4) JDK-8386805: Drop ICF optimization from MSVC compilation flags
  (P4) JDK-8385988: Linux devkits does not work with dnf5
  (P4) JDK-8387702: Linux/clang: enable linktime-gc on libjvm.so too, when it is configured
  (P4) JDK-8385123: Remove 32-bit x86 support for Linux devkits
  (P4) JDK-8387074: Remove duplicate handling of sparc in platform.m4
  (P4) JDK-8386081: Update --release 26 symbol information for JDK 27 build 27
  (P5) JDK-8385987: CheckReleaseFile.java fails for the build using the source code without .git

infrastructure/docs:
  (P4) JDK-8386865: Fix links in JDK 27 JavaDoc API documentation

infrastructure/other:
  (P4) JDK-8385950: Git: add ignore revisions file

infrastructure/release_eng:
  (P4) JDK-8386082: Rectify JDK 28 GA date to 2027-03-23

security-libs/java.security:
  (P3) JDK-8376748: Emit runtime warnings for JCE algorithms that will be disabled
  (P3) JDK-8382269: keytool man page references to "JKS" need to be cleaned up
  (P3) JDK-8383608: Make BinaryEncodable non-exhaustive
  (P3) JDK-8386681: Remove RawKeySpec
  (P4) JDK-8377102: cacerts jlink plugin
  (P4) JDK-8359758: O(n²) time complexity in sun.security.util.LocalizedMessage.getNonlocalized
  (P4) JDK-8387123: Remove LuxTrust Global Root CA
  (P5) JDK-8358549: O(n²) time complexity in java.security.Provider.parseLegacy() method 

security-libs/javax.crypto:
  (P2) JDK-8386911: Crypto benchmark regressions after JDK-8384353
  (P2) JDK-8386466: DESedeKeySpec.isParityAdjusted spec permits 8-byte key but RI throws InvalidKeyException
  (P2) JDK-8386473: DESKeySpec and DESedeKeySpec may throw InvalidKeyException instead of ArrayIndexOutOfBoundsException for Integer.MIN_VALUE offset
  (P3) JDK-8355216: Accelerate P-256 arithmetic on aarch64
  (P4) JDK-8376599: Update Cipher/PBE/PBEKeyTest.java for non-ASCII characters
  (P5) JDK-8385304: X25519 should utilize aarch64 intrinsics
  (P5) JDK-8371305: X25519 should utilize x86 intrinsics

security-libs/javax.net.ssl:
  (P3) JDK-8301626: Capture Named Group information in TLSHandshakeEvent
  (P3) JDK-8386600: Fix comparison checks in DHasKEM
  (P3) JDK-8385978: Test javax/net/ssl/SSLSession/TestEnabledProtocols.java failed: java.security.cert.CertificateException: Unable to initialize, java.io.IOException: Too short
  (P3) JDK-8374454: Test sun/security/ssl/CipherSuite/DisabledCipherSuitesNotNegotiated.java from JDK-8356544 shows intermittent timeouts
  (P4) JDK-8387124: Incomplete algorithm decomposition for TLS 1.3 cipher suites in SSLAlgorithmDecomposer
  (P4) JDK-8386953: sun/security/ssl/CertificateCompression/CompressedCertMsgCache.java failing
  (P4) JDK-8387578: Test sun/security/ssl/SSLSessionImpl/ResumeChecksServer.java failed: Existing session was used: FAIL
  (P5) JDK-8387874: Timeout when running test BulkCipherDisabledAlgorithms
  (P5) JDK-8386203: Use CRC32C checksum instead of Adler32 for stateless session ticket

tools/javac:
  (P3) JDK-8173155: JavacTask should have close() method
  (P3) JDK-8387215: On-demand attribution of a record constructor body causes javac to emit an invalid diagnostic
  (P3) JDK-8383563: Record pattern inference fails when inferred type arguments are same as formals
  (P3) JDK-8387865: ThisEscapeAnalyzer crashes for erroneous source code
  (P4) JDK-8384842: Add source 28 and target 28 to javac
  (P4) JDK-8387377: Compilation is very slow when --module-path contains many Automatic Modules and ALL-MODULE-PATH is used
  (P4) JDK-8387965: Incorrect line numbers for instanceof with pattern matching
  (P4) JDK-8383882: javac: incremental compilation using --module misses classes
  (P4) JDK-8386601: Rename LANGUAGE_MODEL preview feature to PREVIEW_SUPPORT
  (P4) JDK-8386654: Test tools/javac/SystemFilesClosed.java fails on systems without lsof
  (P4) JDK-8385974: Update symbol information for jdk-28+0

tools/javadoc(tool):
  (P3) JDK-8386589: Permitting a preview subclass should not produce a preview note
  (P4) JDK-8385506: Fix some remaining CSS issues
  (P4) JDK-8384065: Improve wrapping of link labels in the table of contents
  (P4) JDK-8383906: Target highlight in member details is too aggressive

tools/jconsole:
  (P4) JDK-8385817: Headless jdk still contains bin/jconsole

tools/jlink:
  (P3) JDK-8385355: NullPointerException in jdk.tools.jlink.internal.ImageResourcesTree after JDK-8377070
  (P4) JDK-8357249: Compiler task keeps --system files open
  (P4) JDK-8386334: JdepsTask keeps --system files open
  (P4) JDK-8387188: JImageExtractTest.java test should deny APPEND_DATA ACL in `testExtractToReadOnlyDir`
  (P4) JDK-8386842: Preview files in root directory not recognized in system image

tools/jpackage:
  (P3) JDK-8387306: Replace InputStream#read(byte[]) with InputStream#readNBytes(int) in RtfConverter.isRtfFile()
  (P3) JDK-8386609: WinL10nTest.java does not respect locale for WixType

tools/jshell:
  (P3) JDK-8186876: JShell: access javadoc for user/library classes

tools/launcher:
  (P3) JDK-8387977: The java manpage should describe the new main method variants
  (P4) JDK-8385024: `JLI_Open()` doesn't correctly handle paths longer than MAXPATH on Windows
  (P4) JDK-8387025: Typo in java man page option --illegal-final-field-mutation=warn "performaed"