emscripten-core/emscripten

Bug in page:C++ exceptions support

Open

#16,859 opened on May 2, 2022

View on GitHub
 (0 comments) (0 reactions) (0 assignees)C++ (27,361 stars) (3,519 forks)batch import
docsgood first bughelp wanted

Description

It should probably be mentioned here that -fwasm-exceptions is currently not compatible with Asyncify (see https://github.com/WebAssembly/binaryen/issues/4470).

URL: ../../docs/porting/exceptions

Contributor guide

Tech stack
cpp
Domain
documentation
Issue type
documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Familiarity with EmscriptenWebAssembly basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90
Research direction
The issue requests adding a note in the exceptions documentation at docs/porting/exceptions about the incompatibility between fwasm exceptions and Asyncify. The linked binaryen issue #4470 provides details. The task is to locate the exact file, add a clear warning, and reference the upstream issue. No code changes are needed.