Repository navigation
PyRepl tests failing with Emscripten 6.0.2 #153313
Description
Activity
- changed the title
[-]Emscripten builds failing with Emscripten 6.0.2[/-][+]PyRepl tests failing with Emscripten 6.0.2[/+]on Jul 8, 2026 - marked WASM Emscripten buildbot: "PyRepl in Chrome smoke test" fails #153600 as a duplicate of this issue
on Jul 12, 2026 Problem is this:
emscripten-core/emscripten#27241
Fixed in main branch of Emscripten. Workaround is-sGROWABLE_ARRAYBUFFERS=0.- added a commit that references this issue
on Jul 14, 2026
Bug report
Bug description:
Reported via @encukou in this comment
The Emscripten buildbot is currently failing the PyRepl test. If I run the browser test locally, I get the following error in the JS console:
Unhandled Promise Rejection: TypeError: Module.PyUnstable_DumpTraceback is not a function. (In 'Module.PyUnstable_DumpTraceback(2, Module._PyGILState_GetThisThreadState())', 'Module.PyUnstable_DumpTraceback' is undefined)If I revert to emscripten 6.0.0, the PyRepl page loads without a problem.
/cc @hoodmane
CPython versions tested on:
CPython main branch
Operating systems tested on:
Other
Linked PRs