error 0
 crypto_stream_xor does not match crypto_stream
 ==29861== Memcheck, a memory error detector
 ==29861== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==29861== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==29861== Command: ./try
 ==29861==
 ==29861==
 ==29861== HEAP SUMMARY:
 ==29861==     in use at exit: 43,520 bytes in 10 blocks
 ==29861==   total heap usage: 16 allocs, 6 frees, 57,464 bytes allocated
 ==29861==
 ==29861== LEAK SUMMARY:
 ==29861==    definitely lost: 0 bytes in 0 blocks
 ==29861==    indirectly lost: 0 bytes in 0 blocks
 ==29861==      possibly lost: 43,520 bytes in 10 blocks
 ==29861==    still reachable: 0 bytes in 0 blocks
 ==29861==         suppressed: 0 bytes in 0 blocks
 ==29861== Rerun with --leak-check=full to see details of leaked memory
 ==29861==
 ==29861== For lists of detected and suppressed errors, rerun with: -s
 ==29861== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)