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kotlin-wasm-wasi-example-wasm-wasi.wasm

I’m having some issues with the <https://github.com/Kotlin/kotlin-wasm-examples/tree/main/wasi-example|kotlin wasm wasi example>, I’ve included the the wasm file it generates by running build. If I give this to the interpreter included in the wasm gc proposal it crashes with “invalid section id”. Is this using old opcodes perhaps? I was trying to convert it to wat format so I could debug it

ah maybe it needs to exception handling proposal also?

This seems to be the answer as the section id is 13 which is a new section in the <https://github.com/WebAssembly/exception-handling/blob/main/proposals/exception-handling/Exceptions.md|exception proposal>, is there a way to turn off exception support. I read about a compiler flag -`Xwasm-use-traps-instead-of-exceptions` but I can’t seem to get it to work :thinking_face:

Right, normally EH proposal is required but with `-Xwasm-use-traps-instead-of-exceptions` you can replace throws with trap (unreachable), so instead of throwing exceptions wasm module will be stopped execution.

Add following to build.gradle.kts
```tasks.withType&lt;KotlinJsCompile&gt;().configureEach {
    kotlinOptions.freeCompilerArgs += listOf("-Xwasm-use-traps-instead-of-exceptions")
}```

JFTR: added the block to the example
<https://github.com/Kotlin/kotlin-wasm-examples/blob/main/wasi-example/build.gradle.kts#L171-L177>

With that flag enabled chasm can now decode binaries output by the kotlin compiler