Issues · emscripten-core/emscripten · GitHub

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Intermittent bot failures due EM_CACHE_IS_LOCKED building ports with libsdl2-ttf

#27160

· sbc100 opened

on Jun 22, 2026

`WebAssembly.instantiate(): illegal flag value 90 @+642213` when `-sSINGLE_FILE=1` in release build

#27156

· sefyan0hack opened

on Jun 21, 2026

Intensive `fseek`/`fread` calls are slow if main thread proxied to pthread, regardless of the file system used

#27143

· uihp opened

on Jun 18, 2026

WASMFS (with OPFS backend) is extremely slow when reading simultaneously from multiple threads

#27134

· JD31 opened

on Jun 17, 2026

Firefox issue with shared memory + `toResizableBuffer()`

#27118

· sbc100 opened

on Jun 14, 2026

emscripten_fetch_unpack_response_headers returns header values with leading and trailing whitespace

#27114

· Aerlinger opened

on Jun 12, 2026

emsdk 6.0.0 and dynamic linking...

#27104

· Honya2000 opened

on Jun 11, 2026

Undefined wasmBinaryFile when compiled with SPLIT_MODULE and pthread

#27064

· ravisumit33 opened

on Jun 7, 2026

browser.test_cross_origin regression: "Expected to find '/report_result?exit:0 ' in '/report_result?abort:Assertion failed"

#27037

· juj opened

on May 31, 2026

cwrap with returnType "boolean" returns a number when all args are numeric

#27021

· esgott opened

on May 28, 2026

Attach event listeners to the canvas rather than the window object

#26971

· raphigaziano opened

on May 16, 2026

Using single-line arrow functions can cause closure compiler to inject an extra `return` keyword`.

#26922

· sbc100 opened

on May 12, 2026