pyodide: RangeError: Maximum call stack size exceeded

🐛 Bug

Trying to run pydantic-core’s tests on wasm with node locally, and I’m getting the following crash, tests are working ok on github CI. My local machine is an M1 mac.

============================= test session starts ==============================
platform emscripten -- Python 3.10.2, pytest-7.1.2, pluggy-1.0.0
rootdir: /test_dir
plugins: hypothesis-6.49.1, speed-0.3.1
collecting ... Pyodide has suffered a fatal error. Please report this to the Pyodide maintainers.
The cause of the fatal error was:
RangeError: Maximum call stack size exceeded
    at getter_call_trampoline (/Users/samuel/code/pydantic-core/tests/node_modules/pyodide/pyodide.asm.js:7647:36)
    at wasm://wasm/0244357a:wasm-function[1069]:0x137410
    at wasm://wasm/0244357a:wasm-function[2223]:0x17ff94
    at wasm://wasm/0244357a:wasm-function[1927]:0x16e527
    at wasm://wasm/0244357a:wasm-function[1929]:0x16e7d5
    at wasm://wasm/0244357a:wasm-function[703]:0x11c70f
    at wasm://wasm/0244357a:wasm-function[702]:0x11c6bb
    at wasm://wasm/0244357a:wasm-function[701]:0x11c542
    at wasm://wasm/0244357a:wasm-function[2960]:0x1e0ea6
    at wasm://wasm/0244357a:wasm-function[1851]:0x16b264 {
  pyodide_fatal_error: true
}
RangeError: Maximum call stack size exceeded
    at getter_call_trampoline (/Users/samuel/code/pydantic-core/tests/node_modules/pyodide/pyodide.asm.js:7647:36)
    at wasm://wasm/0244357a:wasm-function[1069]:0x137410
    at wasm://wasm/0244357a:wasm-function[2223]:0x17ff94
    at wasm://wasm/0244357a:wasm-function[1927]:0x16e527
    at wasm://wasm/0244357a:wasm-function[1929]:0x16e7d5
    at wasm://wasm/0244357a:wasm-function[703]:0x11c70f
    at wasm://wasm/0244357a:wasm-function[702]:0x11c6bb
    at wasm://wasm/0244357a:wasm-function[701]:0x11c542
    at wasm://wasm/0244357a:wasm-function[2960]:0x1e0ea6
    at wasm://wasm/0244357a:wasm-function[1851]:0x16b264 {
  pyodide_fatal_error: true
}

To Reproduce

See https://github.com/samuelcolvin/pydantic-core/pull/148 and in particular https://github.com/samuelcolvin/pydantic-core/pull/148/commits/782b64f54fa88351623739368fba16d5541ca588

I’m just running those tests locally.

Expected behavior

no crash

Environment

• Pyodide Version: 0.21.0-alpha.2
• Browser version: node v16.13.0
• Any other relevant information: