LuaJIT/LuaJIT

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Mirror of the LuaJIT git repository

Is LuaJIT/LuaJIT beginner-friendly?

We have not seen enough recent pull requests from outside contributors to LuaJIT/LuaJIT to say how often they are merged. No beginner-friendly issue is open right now; the list below has the other issues we hold for it.

Stars
5.8k
Forks
1.2k
Open beginner issues
0
Indexed issues
60
Dominant language
C
License
No license data
Last GitHub push
Oct 13, 2026
Latest indexed
Oct 14, 2026
No contributing guide
No code of conduct
Beginner labels
help wanted
No merged PRs in 30d

How to contribute to LuaJIT/LuaJIT

  1. There is no contributing guide, so start from the README and a few recently merged pull requests to see how changes are proposed.
  2. Follow the repository to hear when a new beginner-friendly issue opens, or look through the other issues below.
Beginner friendly Everything
Open All

Issues somebody may already be working on are listed last. List everything by date

  • Parser: nested ?: conditionals bypass LJ_MAX_XLEVEL and overflow the C stack
    Open
    • Is something wrong?

    Difficulty 2/5 1-3 hours Newbie friendliness 74/100

    LuaJIT/LuaJIT#1542 ·

  • JIT/FFI: negative signed integer-to-pointer casts are zero-extended on x64
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    LuaJIT/LuaJIT#1541 · 1 comment ·

  • Intel APX (Advanced Performance Extensions)
    Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#1515 · 2 comments ·

  • Incorrect result for the multiplication of 0 and negative numbers in DUALNUM mode.
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 18/100

    LuaJIT/LuaJIT#1511 · 1 comment ·

  • lj_opt_narrow moves an unguarded num->int conversion inside an ADD/SUB
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 30/100

    LuaJIT/LuaJIT#1505 · 2 comments ·

  • LuaJIT 3.0 Syntax Extensions
    Open
    • Is something wrong?
    3.0 documentation enhancement

    Difficulty 5/5 Over a week Newbie friendliness 5/100

    LuaJIT/LuaJIT#1475 · 188 comments · 64 reactions ·

  • Update ffi to handle 64-bit enums and bit fields
    Open
    • Is something wrong?
    3.0 enhancement FFI

    Difficulty 4/5 3-5 days Newbie friendliness 35/100

    LuaJIT/LuaJIT#1461 · 1 comment ·

  • VM instrumentation for third-party tools
    Open
    • Is something wrong?
    2.1 3.0 enhancement

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#1457 · 23 comments · 2 reactions ·

  • Wrong result when comparing int64_t and lua number
    Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 4/5 3-5 days Newbie friendliness 15/100

    LuaJIT/LuaJIT#1389 · 6 comments ·

  • Drawback of dropping the rehashing of the finalizer table
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#1350 · 4 reactions ·

  • Use addreturn in the repl?
    Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 2/5 1-3 hours Newbie friendliness 50/100

    LuaJIT/LuaJIT#1337 · 2 comments · 1 reaction ·

  • Possible crash on early OOM depending on C compiler
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 15/100

    LuaJIT/LuaJIT#1311 · 3 reactions ·

  • Incorrect narrowing for huge numbers.
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 18/100

    LuaJIT/LuaJIT#1236 · 1 comment · 1 reaction ·

  • FFI and GC anchors
    Open
    • Is something wrong?
    documentation enhancement FFI

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#1167 · 19 comments ·

  • luajit default allocator does not respect alignment requirements in all cases
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 25/100

    LuaJIT/LuaJIT#1161 · 6 comments ·

  • IRSLOAD_READONLY of FORL_STEP slot can leak to other slots
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#1123 · 1 comment ·

  • DUALNUM: IRSLOAD_TYPECHECK elision in rec_for_loop needs to be slightly more conservative
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 18/100

    LuaJIT/LuaJIT#1122 · 1 comment ·

  • v3.0 Tracking Issue
    Open
    • Is something wrong?
    3.0

    Difficulty 5/5 Over a week Newbie friendliness 3/100

    LuaJIT/LuaJIT#1092 ·

  • X64 widening elimination can interact badly with CSE
    Open
    • Is something wrong?

    Difficulty 4/5 3-5 days Newbie friendliness 15/100

    LuaJIT/LuaJIT#1086 · 3 comments ·

  • Plans for PowerPC Little Endian ppc64le support
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#633 · 1 comment · 6 reactions ·

  • Add support for RISC-V
    Open
    • Is something wrong?
    3.0 new port

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#628 · 30 comments · 39 reactions ·

  • Fix table bump optimization
    Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#606 · 4 comments ·

  • table.insert does not call the __len metamethod
    Open
    • Is something wrong?
    enhancement

    Difficulty 3/5 1-2 days Newbie friendliness 35/100

    LuaJIT/LuaJIT#578 · 3 comments ·

  • Port for s390x
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#397 · 3 comments · 1 reaction ·

  • Trace stitching bails on calls to blacklisted functions
    Open
    • Is something wrong?
    enhancement

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#318 · 2 comments ·

  • FFI: Enum cdata tostring should include enum name
    Open
    • Is something wrong?
    enhancement FFI low priority

    Difficulty 3/5 1-2 days Newbie friendliness 45/100

    LuaJIT/LuaJIT#135 ·

  • Merge PPC64 LE Linux !LJ_GC64 interpreter and JIT into LuaJIT repository
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#134 ·

  • Cleanup of LuaJIT test suite
    Open
    • Is something wrong?
    help wanted

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#129 · 3 comments ·

  • Automated regression testing
    Open
    • Is something wrong?

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#86 · 7 comments · 3 reactions ·

  • FFI: Add ffi.complex module for complex numbers
    Open
    • Is something wrong?
    enhancement FFI low priority

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#58 · 1 comment · 1 reaction ·

  • FFI: Compile calls to C functions with aggregates passed or returned by value
    Open
    • Is something wrong?
    3.0 difficult enhancement FFI

    Difficulty 5/5 Over a week Newbie friendliness 10/100

    LuaJIT/LuaJIT#57 · 1 reaction ·

  • Clone Mike Pall
    Open
    • Is something wrong?
    difficult enhancement

    Difficulty 5/5 Over a week Newbie friendliness 5/100

    LuaJIT/LuaJIT#45 · 25 comments · 119 reactions ·

  • Add s390x port
    Open
    • Is something wrong?
    new port

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#43 · 9 comments ·

  • FFI: Add vector/SIMD operations
    Open
    • Is something wrong?
    difficult enhancement FFI low priority

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#40 · 2 comments · 2 reactions ·

  • FFI: Add user-definable intrinsics
    Open
    • Is something wrong?
    enhancement FFI low priority

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#39 · 2 comments · 2 reactions ·

  • New Garbage Collector
    May be free again Open
    • Is something wrong?
    3.0 difficult enhancement

    Difficulty 5/5 Over a week Newbie friendliness 5/100

    LuaJIT/LuaJIT#38 · 20 comments · 20 reactions ·

  • Add Value-Range Propagation (VRP)
    Open
    • Is something wrong?
    enhancement low priority

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#36 ·

  • FFI: Redesign handling of float type
    Open
    • Is something wrong?
    difficult enhancement FFI low priority

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#32 · 1 reaction ·

  • FFI: Redesign handling of uint32_t
    Open
    • Is something wrong?
    difficult enhancement FFI

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#31 · 2 comments ·

  • FFI: Handle all constant declarations
    Open
    • Is something wrong?
    3.0 enhancement FFI

    Difficulty 4/5 Over a week Newbie friendliness 22/100

    LuaJIT/LuaJIT#29 ·

  • FFI: Correctly handle redeclarations
    Open
    • Is something wrong?
    3.0 enhancement FFI

    Difficulty 4/5 3-5 days Newbie friendliness 18/100

    LuaJIT/LuaJIT#28 · 7 comments · 1 reaction ·

  • FFI: Add internal pre-processor
    Open
    • Is something wrong?
    3.0 enhancement FFI

    Difficulty 5/5 Over a week Newbie friendliness 12/100

    LuaJIT/LuaJIT#27 · 5 comments ·

  • Replace package.* library with pure Lua code
    Open
    • Is something wrong?
    3.0 cleanup

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#22 · 1 comment ·

  • FFI: Initialize nested structs/unions
    Open
    • Is something wrong?
    difficult enhancement FFI

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    LuaJIT/LuaJIT#20 ·

  • Better integration of FFI number types
    Open
    • Is something wrong?
    difficult enhancement FFI low priority

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#17 · 1 comment ·

  • Replace more builtins with bytecode
    Open
    • Is something wrong?
    3.0 cleanup enhancement help wanted

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#15 · 8 comments ·

  • Tune loop unrolling heuristics
    Open
    • Is something wrong?
    difficult enhancement

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#11 · 1 comment ·

  • Reorganize simple builtins
    Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 5/5 Over a week Newbie friendliness 15/100

    LuaJIT/LuaJIT#10 · 1 comment ·

  • Stores to dead, unused objects prevent allocation sinking
    Possibly taken Open
    • Is something wrong?
    3.0 enhancement

    Difficulty 5/5 Over a week Newbie friendliness 6/100

    LuaJIT/LuaJIT#651 ·

  • Enable / implement PPC64 LE Linux !LJ_GC64 interpreter and JIT
    Possibly taken Open
    • Is something wrong?
    new port

    Difficulty 5/5 Over a week Newbie friendliness 8/100

    LuaJIT/LuaJIT#42 · 36 comments · 2 reactions ·

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