emscripten-core/emscripten

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Emscripten: An LLVM-to-WebAssembly Compiler

Stars: 27.6k
Forks: 3.6k
Open beginner issues: 0
Indexed issues: 2k
Avg merge: 1d 14h
Merged PRs (30d): 125

Dominant language: C++
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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2,037 open issues indexed

Larger output with -o x.wasm as opposed to -s STANDALONE_WASM Open

wontfix

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

emscripten-core/emscripten#14543 · 12 comments · Opened Jun 26, 2021
ANSI escape codes are apparently unsupported Open

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

emscripten-core/emscripten#14542 · 14 comments · Opened Jun 25, 2021
shell.html has very long lines Open

emscripten-core/emscripten#14541 · 11 comments · 1 assignee · Opened Jun 25, 2021
There is no way to prepare emscripten HTML output for CGI Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

emscripten-core/emscripten#14540 · 6 comments · Opened Jun 25, 2021
I am using sdk-fastcomp-tag-1.38.30-64bit, and I am getting abortOnCannotGrowMemory Open

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

emscripten-core/emscripten#14532 · 7 comments · Opened Jun 24, 2021
Request: supported interface to push GL resources made in JS to WASM side. Open

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

emscripten-core/emscripten#14529 · 1 comment · 5 reactions · Opened Jun 24, 2021
preInit (and maybe onRuntimeInitialized?) should support Promises/async Open

help wanted

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

emscripten-core/emscripten#14520 · 8 comments · 1 reaction · Opened Jun 23, 2021
runtime error: the application has corrupted its heap memory area(address zero)! Open

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

emscripten-core/emscripten#14515 · 2 comments · 1 reaction · Opened Jun 23, 2021
`test_pthread_barrier_wait_2_1` is flaky Open

flaky test

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

emscripten-core/emscripten#14508 · Opened Jun 22, 2021
Nested class fields not written from JavaScript Open

embind

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

emscripten-core/emscripten#14496 · Opened Jun 21, 2021
OpenSSL dlopen abort error Open

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

emscripten-core/emscripten#14492 · 3 comments · Opened Jun 19, 2021
wasm-ld memory usage Open

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

emscripten-core/emscripten#14485 · 10 comments · Opened Jun 18, 2021
-mno-sse*? Open

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

emscripten-core/emscripten#14480 · 2 comments · Opened Jun 18, 2021
preloaded image data is underspecified and unusable Open

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

emscripten-core/emscripten#14469 · 2 comments · Opened Jun 17, 2021
Question: How to expose a static pointer property Open

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

emscripten-core/emscripten#14465 · Opened Jun 16, 2021
Cannot select: t44: i64 ... Open

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

emscripten-core/emscripten#14462 · 3 comments · Opened Jun 16, 2021
memory alignment issue that only occurs with specific buffer sizes (image dimensions) and results in leaks Open

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

emscripten-core/emscripten#14459 · 42 comments · 1 reaction · Opened Jun 16, 2021
[question] How to get FILE* stdout / stderr from JavaScript? Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

emscripten-core/emscripten#14457 · 17 comments · Opened Jun 15, 2021
"Native" emscripten build environment Open

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

emscripten-core/emscripten#14453 · 17 comments · Opened Jun 15, 2021
Pthreads custom wrapper Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

emscripten-core/emscripten#14452 · 1 comment · Opened Jun 15, 2021
Auto-format Python code Open

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

emscripten-core/emscripten#14449 · 1 comment · Opened Jun 14, 2021
RuntimeError: operation does not support unaligned accesses Open

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

emscripten-core/emscripten#14439 · Opened Jun 11, 2021
Recommended updates to dynamic linking documentation Open

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

emscripten-core/emscripten#14426 · 9 comments · Opened Jun 10, 2021
HTML5 Callbacks - add missing documentation for emscripten_html5_remove_all_event_listeners() Open

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

emscripten-core/emscripten#14413 · Opened Jun 8, 2021
Add support for "real" shared libraries when using `-shared` Open

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

emscripten-core/emscripten#14408 · 11 comments · 3 reactions · Opened Jun 8, 2021
Emmake make errors: lack of linux system library dependencies Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

emscripten-core/emscripten#14406 · 7 comments · Opened Jun 8, 2021
Dynamic linking causing runtime errors even before modules are loaded Open

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

emscripten-core/emscripten#14405 · 2 comments · Opened Jun 8, 2021
Find a solution for Firefox GL testing Open

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

emscripten-core/emscripten#14401 · 2 comments · Opened Jun 7, 2021
TypeError: SYSCALLS.getStreamFromFD is not a function Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

emscripten-core/emscripten#14395 · 3 comments · Opened Jun 7, 2021
Finalize fails with json.decoder.JSONDecodeError: Expecting ',' delimiter Open

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

emscripten-core/emscripten#14387 · 3 comments · Opened Jun 6, 2021
Feature request: -Wl,--force-exe-suffix counterpart Open

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

emscripten-core/emscripten#14386 · 6 comments · Opened Jun 6, 2021
[feature request] Modernize file_package.py: chunking; promise-based loading and file creation; caching/decompression -> library-js; JSON-based index Open

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

emscripten-core/emscripten#14385 · 2 comments · 2 reactions · Opened Jun 5, 2021
Document EXPORT_ES6 Open

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

emscripten-core/emscripten#14383 · 10 comments · 6 reactions · Opened Jun 4, 2021
[question] How to await all run dependencies (data-files) to be satisfied? Open

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

emscripten-core/emscripten#14362 · 9 comments · 1 reaction · Opened Jun 3, 2021
embind vector get() function not returning same values as block access with ptr directly from heap Open

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

emscripten-core/emscripten#14359 · Opened Jun 3, 2021
emscripten_force_exit cannot actually shut down the runtime, as the build does not have EXIT_RUNTIME set Open

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

emscripten-core/emscripten#14344 · 13 comments · Opened Jun 2, 2021
Design issues with multithreaded application using workerfs Open

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

emscripten-core/emscripten#14339 · 1 comment · 5 reactions · Opened Jun 1, 2021
Dlib + opencv webworker performance Open

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

emscripten-core/emscripten#14327 · Opened May 29, 2021
Access a Modules WebAssembly.Table and WebAssembly.Memory Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

emscripten-core/emscripten#14326 · 5 comments · Opened May 29, 2021
Failed to select_overload when template function have a typename after a variadic typename Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

emscripten-core/emscripten#14320 · 1 comment · Opened May 27, 2021
Unable to connect to a WebSocket server using the posix socket api in a web worker thread. Open

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

emscripten-core/emscripten#14318 · 1 comment · Opened May 27, 2021
Allow loading settings from JSON? Open

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

emscripten-core/emscripten#14317 · 16 comments · Opened May 27, 2021
Add support for (const) char* type to Embind? Open

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

emscripten-core/emscripten#14314 · 3 reactions · Opened May 27, 2021
Cannot compile after switching to latest emsdk... Open

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

emscripten-core/emscripten#14313 · 15 comments · Opened May 27, 2021
What changed for proxying between 2.0.8 and 2.0.23? Open

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

emscripten-core/emscripten#14312 · 14 comments · Opened May 27, 2021
A way to catch exception Open

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

emscripten-core/emscripten#14310 · Opened May 27, 2021
Syscalls vs. user calls in emscripten's main thread call dispatch system Open

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

emscripten-core/emscripten#14292 · 4 comments · Opened May 26, 2021
fprintf/printf output not displayed without newline Open

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

emscripten-core/emscripten#14285 · 1 comment · Opened May 25, 2021
Tutorial is confusing; error handling could be better Open

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

emscripten-core/emscripten#14265 · 1 comment · Opened May 23, 2021
add a guide on how to compile all this emscripten Open

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

emscripten-core/emscripten#14259 · 5 comments · Opened May 22, 2021

emscripten-core/emscripten

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