I'm encountering an error when trying to convert my wasm file to a wat file using `wasm2wat`. The error is `0003778: error: unexpected opcode: 0xfe 0x25`. I am able to run other tools such as `wasm-decompile` and `wasm-objdump` on the same wasm file. It appears that the opcode means `i32.atomic.rmw.sub` as far as I can tell from the disassembly :
```
 003776: fe 25 02 04                |   i32.atomic.rmw.sub 2 4
```

I notice a difference between the address in the error message (0003778) and the one from the disassembly (003776). Is it meaningful?

Otherwise, my main objective is to successfully convert my existing wasm file. Any idea how I can solve or debug this opcode issue?
wasm2wat : Unexpected opcode 0xfe 0x25
This is a GitHub Issue
repo:wabt
owner:WebAssembly
Title : wasm2wat : Unexpected opcode 0xfe 0x25
Issue date:

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I'm encountering an error when trying to convert my wasm file to a wat file using `wasm2wat`. The error is `0003778: error: unexpected opcode: 0xfe 0x25`. I am able to run other tools such as `wasm-decompile` and `wasm-objdump` on the same wasm file. It appears that the opcode means `i32.atomic.rmw.sub` as far as I can tell from the disassembly :
```
 003776: fe 25 02 04                |   i32.atomic.rmw.sub 2 4
```

I notice a difference between the address in the error message (0003778) and the one from the disassembly (003776). Is it meaningful?

Otherwise, my main objective is to successfully convert my existing wasm file. Any idea how I can solve or debug this opcode issue?
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