py/showbc: Fix off-by-one when showing address of unknown opcode.
@@ -540,7 +540,7 @@ const byte *mp_bytecode_print_str(const byte *ip) {
mp_uint_t op = ip[-1] - MP_BC_BINARY_OP_MULTI;
printf("BINARY_OP " UINT_FMT " %s", op, qstr_str(mp_binary_op_method_name[op]));
} else {
- printf("code %p, byte code 0x%02x not implemented\n", ip, ip[-1]);
+ printf("code %p, byte code 0x%02x not implemented\n", ip - 1, ip[-1]);
assert(0);
return ip;
}
