==2061744== Memcheck, a memory error detector
==2061744== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
==2061744== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info
==2061744== Command: ../y86 -d inputs/invalid.o
==2061744== 
Disassembly of executable contents:
  0x100:                               | .pos 0x100 code
  0x100:                               | _start:
  0x100: 30 f3 0f 00 00 00 20 31 40 13 |   irmovq 0x134031200000000f, %rbx
Invalid opcode: 0xfd

==2061744== 
==2061744== HEAP SUMMARY:
==2061744==     in use at exit: 0 bytes in 0 blocks
==2061744==   total heap usage: 3 allocs, 3 frees, 16,856 bytes allocated
==2061744== 
==2061744== All heap blocks were freed -- no leaks are possible
==2061744== 
==2061744== For lists of detected and suppressed errors, rerun with: -s
==2061744== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)