Issues

• ## 🐛 Bug Report: Missing null check in metacall_value_cast_* causes memory reinterpretation on unsupported casts(e.g returns little endian)

  bug
  metacall/core#933 · Filter by author TheDoomBoy-jab opened on Oct 16, 2026

• metacall_destroy() triggers Use-After-Free segfault when invoked from within a guest loader callback

  bug
  metacall/core#932 · Filter by author TheDoomBoy-jab opened on Oct 16, 2026

• Stack buffer overflow in metacall.c — is the 16-argument limit intentional?

  bug
  metacall/core#923 · Filter by author 10vulture1005 opened on Oct 10, 2026
  2

• [node-loader] Signature disambiguation for single options objects vs positional parameters

  metacall/core#915 · Filter by author TheDoomBoy-jab opened on Sep 28, 2026
  5

• [python-loader] Handle generator functions and un-exhausted iterators

  metacall/core#914 · Filter by author TheDoomBoy-jab opened on Sep 28, 2026
  2

• [python-loader] Support parameter mapping for keyword-only arguments and **kwargs

  metacall/core#913 · Filter by author TheDoomBoy-jab opened on Sep 28, 2026
  2

• Implement thread safe lock free copy on write array for the destroy list of the plugins (specially the loaders)

  bugc/c++enhancement
  metacall/core#886 · Filter by author viferga opened on Sep 14, 2026
  

• Coverage CI

  enhancementgithub_actions
  Feature

  metacall/core#882 · Filter by author viferga opened on Sep 13, 2026

• [Rosetta-9] Modernize C, C++, Clang and toolchains

  documentationenhancement
  metacall/core#873 · Filter by author k5602 opened on Sep 5, 2026
  

• [Rosetta-7] Improve CONTRIBUTING, conduct, support

  documentation
  metacall/core#871 · Filter by author k5602 opened on Sep 5, 2026
  3

• [Rosetta-5] Add ROADMAP.md

  documentation
  metacall/core#869 · Filter by author k5602 opened on Sep 5, 2026
  

• [Rosetta-4] Version and platform data update

  documentation
  metacall/core#868 · Filter by author k5602 opened on Sep 5, 2026
  

• [Rosetta-3] OS-lang-port-loader support tiers Tier 1, 2, 3

  documentation
  metacall/core#867 · Filter by author k5602 opened on Sep 5, 2026
  1

• [Rosetta-2] Reference refresh for core, loaders, ports, serials, detours

  documentation
  metacall/core#866 · Filter by author k5602 opened on Sep 5, 2026
  1

• [Rosetta-1] New docs layout and stack with Diataxis

  documentationenhancement
  Task

  metacall/core#865 · Filter by author k5602 opened on Sep 5, 2026
  1

• [Rosetta-0] Audit and freeze current docs and matrix

  documentationgood first issue
  metacall/core#864 · Filter by author k5602 opened on Sep 5, 2026
  2

• [EPIC] Project Rosetta - modern docs, support tiers, roadmap and governance

  documentationhelp wanted
  metacall/core#863 · Filter by author k5602 opened on Sep 5, 2026

• Add Emscripten/WebAssembly Build Target for MetaCall Core

  wontfix
  metacall/core#861 · Filter by author k5602 opened on Aug 25, 2026
  3

  

• NodeJS fails on uv_thread_join with thread sanitizers

  bug
  metacall/core#848 · Filter by author viferga opened on Jul 21, 2026
  4

• Rust invalid free in MetaCallException::new and other unsoundness issues

  bug
  metacall/core#809 · Filter by author thanasistrisp opened on Jun 1, 2026
  19

• Expose Loader Type Conversion Metadata

  metacall/core#808 · Filter by author AshutoshSharma-pixel opened on Jun 1, 2026
  4

• rb_loader: metacall gem not available in distributable - Ruby cannot call other languages via metacall()

  metacall/core#782 · Filter by author avik22835 opened on Apr 22, 2026
  4

• MetaCall Runtime Environment Profile (MREP)

  metacall/core#760 · Filter by author k5602 opened on Apr 8, 2026
  4

• Change all log_write by metacall_throw_error

  metacall/core#720 · Filter by author viferga opened on Mar 24, 2026
  1

• Metacircular self-registration of MetaCall API via _ex load parameters

  metacall/core#715 · Filter by author Sukuna0007Abhi opened on Mar 24, 2026
  2