Stream: git-wasmtime

Topic: wasmtime / issue #1845 Missing frame in trap message.

view this post on Zulip Wasmtime GitHub notifications bot (Apr 15 2026 at 17:40):

peterhuene closed issue #1845:

In the .NET repo, there's a test (see corresponding .wat file here) that defines a host function that throws a .NET exception. The .NET API turns the exception into a C API wasm_trap_t.

This results in the following trap message on Windows:

Test error message for wasmtime dotnet unit tests.
wasm backtrace:
  0:   0xad - <unknown>!do_throw

However, on Linux and macOS, the Wasm frame is missing:

Test error message for wasmtime dotnet unit tests.

We should be able to properly capture the backtrace across all platforms and translate the wasm frames.

See bytecodealliance/wasmtime-dotnet#16 for an example of the failure (ignore the general I/O error encountered: Invalid argument (os error 22) failures as that's fixed by a Wasmtime PR under review).

cc @alexcrichton @yurydelendik

view this post on Zulip Wasmtime GitHub notifications bot (Apr 15 2026 at 17:40):

peterhuene commented on issue #1845:

Closing this old issue as I am auditing my assigned issues.

Last updated: May 03 2026 at 22:13 UTC