Native Image Committer and Community Meeting 2025-08-28

[wirthi]

List of all past and upcoming meetings: #3933

The meeting after this one is planned for September 25th, 2025. The meeting will typically be on the last Thursday of each month.

New and Noteworthy

• General
  GraalVM Community Summit 22.-23. October 2025 in Zurich
  [GR-68848] Move most SVM projects to Java 24 compliance #12016
  [GR-68727] Move the last graal gates to a tier or to post-merge. #11992

• Finalizing 25.0.0 release, basically frozen now

• Native Image Layers
  [GR-65719] Delay methods to the application layer #11976
  [GR-67922] Refactor layered class initialization: load base layer simulation result. #11951
  [GR-59071] Make CGlobals layer-aware. #11973
  [GR-67668] Implement PINNED_TO_INITIAL_LAYER and improve CompilationBehavior #12032
  [GR-59742] Re-enable @Uninterruptible and @RestrictHeapAccess for open world and layered images. #12029
  [GR-59590] Reuse dispatch table slots from parents in open type world hub layout. #11936
  [GR-66793] Use SingletonTraits to identify InitialLayerOnly Image Singletons. #11884
  [GR-68082] Refactor class inclusion policy. Reduce core reflection usage. #11834

• Crema
  [GR-68752] Crema constant pool improvements. #12025
  [GR-60110] Implement Crema runtime constant pool. #11920
  [GR-60468] Introduce a metaspace. #11875
  [GR-60085] [GR-68380] [GR-53964] [GR-68546] Use a contiguous address space for the metaspace and support heap dumping. #11993
  [GR-60080] Add reference map support for runtime allocated DynamicHubs. #12031

• Streamline reachability metadata
  [GR-67746] Base reflection TCK tests #11839
  [GR-68152] Register class metadata on feature API registration behind --future-defaults #11815
  [GR-68047] Split up and rename future defaults. #11790

Note: please try (and test) your projects with --future-defaults=all. If need be adjust your framework with the following system properties: org.graalvm.nativeimage.future-defaults.complete-reflection-types,org.graalvm.nativeimage.future-defaults.run-time-initialize-file-system-providers, org.graalvm.nativeimage.future-defaults.run-time-initialize-security-providers.

• Usability
  [GR-58553] Adapt NI agent for the new JDK release #12037
  [GR-59732] Make ProgressReporter Top 10 printing strictly package-based. #12018
  [GR-62101] Ensure users see final bundle output directories in build-output. #12004
  [GR-67508] Improve reporting on included resources and error when the image heap gets too large. #11985
  [GR-68569] Only calculate resource stats if reachable. #11970
  [GR-67368] Registering function descriptors for runtime foreign access via API during Feature#afterRegistration #11847
  [GR-68061] Preserve the java.management module. #11888

• Monitoring / Tooling
  [GR-68599] Fix transient failure in JmxTest. #11990

• Debugging
  [GR-68017] Fix loader issue that occurs with -H:-StripDebugInfo. #11912

• FFM API / Panama
  [GR-58549] Update FFM API docs. #11962
  [GR-67606] Refactor UnregisteredForeignStubException into a missing registration error #11816
  [GR-65268] Support Arena.ofShared with runtime compilations. #11788

• Garbage Collector / Memory Management
  Experimental in-place compacting garbage collection for the Serial GC old generation with -H:+CompactingOldGen.

• Other & fixes
  [GR-68255] [GR-63024] Enable UseConservativeUnsafeAccess by default #11977
  [GR-68593] Include unresolved types in the method descriptor #12033
  [GR-68824] Remove the default availability for @UnknownObjectField and @UnknownPrimitiveField. #12008
  [GR-67701] [GR-68034] Improve the parallelism of ImageHeapCollectionFeature and the associated ImageHeap{List,Map} data structures #11919
  [GR-64675] Introduce TypeFlow.flowState #11966
  [GR-68628] Fix signature and return type in generated header files. #11955
  [GR-68497] Introduce UncaughtExceptionHandler for Native Image #11905
  [GR-68134] In deoptimization stub, save registers again and restore return address. #11849
  [GR-67578] Reference handler and VM operation thread fixes. #11848
  [GR-63624] [GR-65868] Fix non-determinism in the interaction between inlining before analysis and simulation of class initializers #11842
  [GR-67973] Fix graph scheduling segfaults for CEntryPoints. #11833
  [GR-68862] Github: [Native Image] [Windows] Required environment variable names use case-sensitive compare on Windows #11819 (Red Hat)
  [GR-67902] Fix segfaults caused by graph scheduling. #11791
  [GR-68103] Fix memory leak in SourceManager.verifiedPaths. #11794

Questions

Deep Dive: API for dynamic-access registration based on access conditions