titzer/wizard-engine

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Research WebAssembly Engine

Stars: 512
Forks: 51
Open beginner issues: 0
Indexed issues: 21
Avg merge: 7h 34m
Merged PRs (30d): 21

Dominant language: WebAssembly
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

Open All

21 open issues indexed

br_on_cast / br_on_cast_fail accept a target label with an empty result type Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

titzer/wizard-engine#655 · 1 comment · Opened Jun 25, 2026
ref.test and ref.cast accept a target heap type from a different hierarchy than the operand Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

titzer/wizard-engine#654 · Opened Jun 25, 2026
[Potential Bug]: Wizard x86-64 SPC: `i8x16.ne` (and i16x8/i32x4/i64x2) corrupts a live local Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

titzer/wizard-engine#650 · Opened Jun 11, 2026
[Potential Bug]: `vN.storeN_lane` writes to the wrong address (x86-64 interpreter) Open

Difficulty 2/5 1-3 hours Newbie friendliness 88/100

titzer/wizard-engine#649 · Opened Jun 10, 2026
Potential Bug: `i8x16.extract_lane_u` / `i16x8.extract_lane_u` not zero-extended in the x86-64 interpreter Open

Difficulty 1/5 1-3 hours Newbie friendliness 88/100

titzer/wizard-engine#648 · Opened Jun 10, 2026
Does profiler work with stack-switching instructions? Open

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

titzer/wizard-engine#638 · 3 comments · Opened May 19, 2026
Profiler can print bad values for "self" on first row Open

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

titzer/wizard-engine#637 · Opened May 19, 2026
!exception[tag=3587](<ref struct #35>) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

titzer/wizard-engine#636 · 1 comment · Opened May 19, 2026
Test failure with incorrect stack state Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

titzer/wizard-engine#634 · 1 comment · Opened May 12, 2026
`Execute.tiering` should not be global Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

titzer/wizard-engine#629 · Opened May 10, 2026
UNREACHABLE Trap in `v128.load8_splat` with memidx ≠ 0 Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

titzer/wizard-engine#544 · Opened Dec 25, 2025
null check exception Open

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

titzer/wizard-engine#530 · 2 comments · Opened Nov 24, 2025
Test hangs Open

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

titzer/wizard-engine#495 · 5 comments · Opened Sep 24, 2025
Add ability to map dirs by name Open

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

titzer/wizard-engine#482 · 1 comment · Opened Sep 19, 2025
Fast interpreter: issue with decoding block types Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

titzer/wizard-engine#283 · 1 comment · Opened Feb 10, 2025
Wrong error message in case of validation error Open

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

titzer/wizard-engine#270 · 2 comments · Opened Feb 3, 2025
Run + report status of proposals in CI Open

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

titzer/wizard-engine#190 · 1 comment · Opened Sep 18, 2024
Add CSV capabilities to Wizard Monitors Open

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

titzer/wizard-engine#167 · 1 comment · Opened May 30, 2024
Implement wasm-threads (atomics) proposal Open

help wanted

Difficulty 5/5 Over a week Newbie friendliness 38/100

titzer/wizard-engine#155 · Opened Feb 28, 2024
Support wasm-c-api Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

titzer/wizard-engine#29 · 4 comments · Opened Apr 26, 2023
Implement all of WASI snapshot preview 1 Open

help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

titzer/wizard-engine#4 · 1 comment · Opened Aug 15, 2022

titzer/wizard-engine

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