!exception[tag=3587](<ref struct #35>)

[alex28sh]

Hi! We've been trying to run our Kotlin example https://github.com/Kotlin/kotlin-wasm-nodejs-template/tree/wasi/wasmtime.

We tried the following configurations of running project:

• Coroutines compiled with Stack Switching proposal; using legacy eh for kotlin exceptions.
  Running via wizeng.x86-64-linux --ext:legacy-eh --ext:stack-switching
• Coroutines compiled with Stack Switching proposal; using wasm exception handling proposal for kotlin exceptions.
  Running via wizeng.x86-64-linux --ext:exception-handling --ext:stack-switching
• Coroutines compiled with default State Machine; using legacy eh for kotlin exceptions.
  Running via wizeng.x86-64-linux --ext:legacy-eh
• Coroutines compiled with default State Machine; using wasm exception handling proposal for kotlin exceptions.
  Running via wizeng.x86-64-linux --ext:exception-handling

For every configuration we got the following error:

Hello from Kotlin/Wasm

--- Sequence aka generator ---
Sum: -1612145124
Duration: 16380ms

--- Coroutines ---
!exception[tag=3587](<ref struct #35>) (numbers for tag are varying)

In the archive attached, you can run example compiled to WebAssembly with wizeng.x86-64-linux --ext:exception-handling --ext:stack-switching kotlin-wasm-nodejs-example.wasm
kotlin.zip

Alternatively, one can play with turning off/on exception/coroutine flags in the example repo. To compile the example, you would need to publish to maven local kotlin branch with stack switching support https://github.com/JetBrains/kotlin/tree/shefer/coroutines-stack-switching-optional-prod via ./gradlew publishToMavenLocal. Then run ./gradlew compileDevelopmentExecutableKotlinWasmWasi - in build/compileSync/wasmWasi/main/developmentExecutable/kotlin you will find the compiled binaries.

[titzer]

Can confirm; looks like the instance is getting screwed up in one of the frames.