One of the opcodes in the wasm file in the test was 0xc0 which suggested the sign-extension features are needed. Probably because I'm using a modern version of the rust compiler that emits it but parity-wasm is getting a bit old so i had to enable it as a feature.
One of the opcodes in the wasm file in the test was
0xc0which suggested the sign-extension features are needed. Probably because I'm using a modern version of the rust compiler that emits it but parity-wasm is getting a bit old so i had to enable it as a feature.