error 0
 ==25577== Memcheck, a memory error detector
 ==25577== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==25577== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==25577== Command: ./try
 ==25577==
 ==25577==
 ==25577== Process terminating with default action of signal 11 (SIGSEGV)
 ==25577==  General Protection Fault
 ==25577==    at 0x401FD4: ??? (chacha.s:98)
 ==25577==
 ==25577== HEAP SUMMARY:
 ==25577==     in use at exit: 43,520 bytes in 10 blocks
 ==25577==   total heap usage: 15 allocs, 5 frees, 53,368 bytes allocated
 ==25577==
 ==25577== LEAK SUMMARY:
 ==25577==    definitely lost: 0 bytes in 0 blocks
 ==25577==    indirectly lost: 0 bytes in 0 blocks
 ==25577==      possibly lost: 43,520 bytes in 10 blocks
 ==25577==    still reachable: 0 bytes in 0 blocks
 ==25577==         suppressed: 0 bytes in 0 blocks
 ==25577== Rerun with --leak-check=full to see details of leaked memory
 ==25577==
 ==25577== For lists of detected and suppressed errors, rerun with: -s
 ==25577== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)