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Implement a low level mutex (and condvar?) that works in Wasm Workers?

Status: Open.

#26426 In emscripten-core/emscripten;

· sbc100 opened on Mar 10, 2026

Clang compilation issues with C++20 and C++23 features for std::chrono and std::ranges

Status: Open.

#26423 In emscripten-core/emscripten;

· Sailanarmo opened on Mar 10, 2026

When offscreen canvas is used with threads disabled it changes sizes incorrectly

Status: Open.

#26394 In emscripten-core/emscripten;

· NoctemCat opened on Mar 5, 2026

std::call_once does not work with WASM_WORKER due to dependency on pthread APIs.

Status: Open.

#26375 In emscripten-core/emscripten;

· sbc100 opened on Mar 2, 2026

Wrapping syscalls doesn't work with -sMAIN_MODULE -sEXPORT_ALL

Status: Open.

#26355 In emscripten-core/emscripten;

· hoodmane opened on Feb 27, 2026

sqlite CRUD operations are getting slower over time in Chrome when ASYNCIFY is used and the database is on a IDBFS mount

Status: Open.

#26332 In emscripten-core/emscripten;

· leopatras opened on Feb 24, 2026

Python version specified in Download and install page

Status: Open.

#26331 In emscripten-core/emscripten;

· friesga opened on Feb 24, 2026

Preloaded file case insensitive name collision throws uncaught exception

Status: Open.

#26327 In emscripten-core/emscripten;

· AlexWalsh2 opened on Feb 24, 2026

Nested loop vectorization

Status: Open.

#26322 In emscripten-core/emscripten;

· 1valdis opened on Feb 23, 2026

val::throw_ linker error with -fno-exceptions

Status: Open.

#26290 In emscripten-core/emscripten;

· stevenwdv opened on Feb 18, 2026

Compiler warns about missing val::promise_type::unhandled_exception with -fno-exceptions

Status: Open.

#26289 In emscripten-core/emscripten;

· stevenwdv opened on Feb 18, 2026

libsdl.js and self-compiled SDL2 confusion

Status: Open.

#26271 In emscripten-core/emscripten;

· magist3r opened on Feb 14, 2026