error 0
 crypto_hash does not handle m=h overlap
 ==12831== Memcheck, a memory error detector
 ==12831== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==12831== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==12831== Command: ./try
 ==12831==
 ==12831==
 ==12831== HEAP SUMMARY:
 ==12831==     in use at exit: 17,408 bytes in 4 blocks
 ==12831==   total heap usage: 11 allocs, 7 frees, 104,056 bytes allocated
 ==12831==
 ==12831== LEAK SUMMARY:
 ==12831==    definitely lost: 0 bytes in 0 blocks
 ==12831==    indirectly lost: 0 bytes in 0 blocks
 ==12831==      possibly lost: 17,408 bytes in 4 blocks
 ==12831==    still reachable: 0 bytes in 0 blocks
 ==12831==         suppressed: 0 bytes in 0 blocks
 ==12831== Rerun with --leak-check=full to see details of leaked memory
 ==12831==
 ==12831== For lists of detected and suppressed errors, rerun with: -s
 ==12831== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)