I mentioned this on a discord post, but I got this output while trying to optimize contract which fails on allocation (maybe? probably?)

$ soroban contract optimize --wasm pair.wasm
Reading: pair.wasm (55763 bytes)
Writing to: pair.optimized.wasm...
[wasm-validator error in function 87] unexpected false: all used features should be allowed, on
(i32.extend8_s
 (local.get $2)
)

but this tells me nothing, except it may be connected with this error:

error: transaction simulation failed: HostError: Error(WasmVm, InternalError)

Event log (newest first):
   0: [Diagnostic Event] topics:[error, Error(WasmVm, InternalError)], data:"Module(Translation(TranslationError { inner: Validate(BinaryReaderError { inner: BinaryReaderErrorInner { message: "sign extension operations support is not enabled", offset: 28307, needed_hint: None } }) }))"
   1: [Diagnostic Event] topics:[fn_call, Bytes(
...

EDIT: Small update
I got rid of num_bigint and num_traits and they were causing that sign-extension error in my case.

Investigate Wasmi sign-extension error #968

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jayz22openedon Jul 27, 2023

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jayz22
openedon Jul 27, 2023