error 0
 crypto_encrypt_open does not handle c=t overlap
 ==942== Memcheck, a memory error detector
 ==942== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
 ==942== Using Valgrind-3.15.0.GIT and LibVEX; rerun with -h for copyright info
 ==942== Command: ./try
 ==942==
 ==942== Conditional jump or move depends on uninitialised value(s)
 ==942==    at 0x4C32734: __memcmp_sse4_1 (vg_replace_strmem.c:1112)
 ==942==    by 0x4017D9: test (try.c:151)
 ==942==    by 0x401EB2: main (try-anything.c:295)
 ==942==  Uninitialised value was created by a stack allocation
 ==942==    at 0x4039B0: crypto_symenc_decrypt (crypto.c:102)
 ==942==
 ==942==
 ==942== HEAP SUMMARY:
 ==942==     in use at exit: 7,145,392 bytes in 12 blocks
 ==942==   total heap usage: 2,118 allocs, 2,106 frees, 7,254,112 bytes allocated
 ==942==
 ==942== LEAK SUMMARY:
 ==942==    definitely lost: 0 bytes in 0 blocks
 ==942==    indirectly lost: 0 bytes in 0 blocks
 ==942==      possibly lost: 7,144,960 bytes in 10 blocks
 ==942==    still reachable: 432 bytes in 2 blocks
 ==942==         suppressed: 0 bytes in 0 blocks
 ==942== Rerun with --leak-check=full to see details of leaked memory
 ==942==
 ==942== For lists of detected and suppressed errors, rerun with: -s
 ==942== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)