wasm-opt segfault on merge-similar-functions with Kotlin generated wasm code #8594

Hi,

I'm using Kotlin compiler to build wasm application. Kotlin plugin is using wasm-opt to optimize wasm code. My application causes wasm-opt to crash. The wasm-opt binary is called with these parameters:

--enable-gc --enable-reference-types --enable-exception-handling --enable-bulk-memory --enable-nontrapping-float-to-int --closed-world --no-inline=kotlin.wasm.internal.throwValue --no-inline=kotlin.wasm.internal.getKotlinException --inline-functions-with-loops --traps-never-happen --fast-math --type-ssa -O3 -O3 --gufa -O3 --type-merging -O3 -Oz

The wasm code:
app.zip

When using debug option I can see it crashes when running merge-similar-functions pass.

The workaround is to replace the last parameter -Oz with -Os.