;;; TOOL: run-objdump-gen-wasm
;;; ERROR: 1
magic
version
section(TYPE) { count[1] function params[0] results[1] i32 }
section(FUNCTION) { count[1] type[0] }
section(CODE) {
  count[1]
  func {
    locals[0]
    invalid_op[0xfe 0x7f]
  }
}
(;; STDERR ;;;
000001a: error: unexpected opcode: 0xfe 0x7f
;;; STDERR ;;)
(;; STDOUT ;;;

bad-opcode-prefix.wasm:	file format wasm 0x1

Code Disassembly:

000017 func[0]:
;;; STDOUT ;;)