emscripten-core

emscripten-core/emscripten

Emscripten: An LLVM-to-WebAssembly Compiler

Stars: 27.6k
Forks: 3.6k
Open beginner issues: 0
Indexed issues: 2k
Avg merge: 1d 16h
Merged PRs (30d): 117

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

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2038 open issues indexed

Option for compiling stdlib with debug symbols Open

emscripten-core/emscripten#14619 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Linker errors after switching to new Emscripten 2.0.25 Open

emscripten-core/emscripten#14622 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
-fno-inline-functions still being added when optimization level is overridden Open

emscripten-core/emscripten#14624 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ASan doesn't properly detect stack overflow Open

emscripten-core/emscripten#14628 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Does emscripten_exit_with_live_runtime leak shadow stack space? Open

emscripten-core/emscripten#14638 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Asyncify produces very deep stacktraces Open

asyncify

emscripten-core/emscripten#14641 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Incorrect result for vector at -O3 with -msimd128 Open

emscripten-core/emscripten#14643 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
the dedicated worker is not disappear when stop Open

emscripten-core/emscripten#14645 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Confuse the export c function in WebIDL for reduce file size Open

emscripten-core/emscripten#14647 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Invalid UTF-8 leading byte 0xf9 encountered when deserializing a UTF-8 string on the asm.js/wasm heap to a JS string! Open

emscripten-core/emscripten#14650 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Problems building with C++ standard library Open

emscripten-core/emscripten#14686 · 20 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
emcmake with Visual Studio generator doesn't work as expected Open

wontfix

emscripten-core/emscripten#14688 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Incorrect library name passed to linker when linking with versioned dynamic libraries Open

wontfix

emscripten-core/emscripten#14689 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Optimizing output .js size: using createExportWrapper with no assertions Open

help wanted

emscripten-core/emscripten#14695 · 12 comments · 1 reaction · 1 assignee · Indexed Sep 15, 2026
TypeError logs from emrun Open

emscripten-core/emscripten#14697 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
MIN_IE_VERSION=11 no longer produces an asm that can run on IE11 Open

good first bug help wanted

emscripten-core/emscripten#14700 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
tests/test_benchmark.py run_binaryen_opts() composes an impossible path Open

emscripten-core/emscripten#14724 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
A way to propagate link-time settings from libraries Open

emscripten-core/emscripten#14729 · 27 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Bug in generated C++ wrapper for overriding C++ classes in JS when using WebIDL_Binder Open

emscripten-core/emscripten#14745 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Documentation doesn't match implementation in WebIDL_Binder: Use of [Const] attribute for methods Open

help wanted

emscripten-core/emscripten#14747 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
posix socket api to websocket does not work with any version of node's ws but works in chrome 92. Open

wontfix

emscripten-core/emscripten#14750 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
[USE_ICU=1] Always failed with U_MISSING_RESOURCE_ERROR after calling ubrk_open() Open

wontfix

emscripten-core/emscripten#14753 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
USE_ICU/libicu lacks any testing or examples Open

emscripten-core/emscripten#14754 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Using -s "USE_LIBJPEG=1" as part of emcc command line, I get error: "emcc: error: Unexpected hash: <include hash here>" Open

emscripten-core/emscripten#14760 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Possible memory leak inside emscripten_sleep Open

wontfix

emscripten-core/emscripten#14768 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unreachable inside unwinding Open

emscripten-core/emscripten#14770 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Safari / Chrome discrepancies lead to problems in instantiateWasm implementation example; Uncatchable exceptions in receiveInstance Open

emscripten-core/emscripten#14777 · 29 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
SharedArrayBuffer is not defined (Deprecation of SharedArrayBuffer) in Chrome version 92. Open

emscripten-core/emscripten#14779 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
module can't find dyncall_viff Open

emscripten-core/emscripten#14802 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
AddressSanitizer doesn't work together with Asyncify (specifically, test_asyncify_lists_onlylist_d) Open

asyncify sanitizers

emscripten-core/emscripten#14807 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Prevent multiple fetch + initialize for side modules Open

dynamic_linking

emscripten-core/emscripten#14820 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
the disadvantages of for...in... when the array prototype adds methods Open

emscripten-core/emscripten#14822 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Question about -s WEBSOCKET_SUBPROTOCOL=null and -s PROXY_POSIX_SOCKETS=1 Open

emscripten-core/emscripten#14823 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ALLOW_UNIMPLEMENTED_SYSCALLS doesn't exclude unsupported syscalls in autoconf Open

help wanted

emscripten-core/emscripten#14824 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
octet[] evaluated to char rather than char* for argument list in C++ Glue code Open

emscripten-core/emscripten#14827 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Generated source map does not specify sources properly Open

emscripten-core/emscripten#14831 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Some standalone tests fail on lsan + wasm2c Open

emscripten-core/emscripten#14840 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Fragile code generated from IDL (functions preceding constructor are not exposed) Open

emscripten-core/emscripten#14861 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
FS permission handling seems odd Open

help wanted

emscripten-core/emscripten#14866 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
SDL2 TTF_RenderText_Solid Produces "alignment fault" when compiled with -s SAFE_HEAP=1 Open

emscripten-core/emscripten#14870 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Our pthread_kill implementation is incorrect, this API is not for killing threads, but sending signals to them Open

emscripten-core/emscripten#14872 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can we emulate inter-thread signal handling such that `raise()` (i.e. `kill(getpid())`) can work between threads? Open

emscripten-core/emscripten#14892 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
String ordering produce wrong results when called from webassembly. #4034 Open

help wanted

emscripten-core/emscripten#14895 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
pthread_create detected as undefined symbol with side module + -fexception + -O3 Open

emscripten-core/emscripten#14896 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is such a file system possible? Open

emscripten-core/emscripten#14897 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Assertion failed: cannot emulate both ES2 and legacy GL Open

emscripten-core/emscripten#14904 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Crashes in dlmalloc that occur in a worker can lock up the entire application Open

emscripten-core/emscripten#14907 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Does Emscripten have the ability to disassemble? Open

emscripten-core/emscripten#14917 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
The gamepad id item of EmscriptenGamepadEvent Open

emscripten-core/emscripten#14920 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Module.print caller should check for catch exceptions / warn about them? Open

emscripten-core/emscripten#14926 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

A short digest of beginner-friendly GitHub issues.