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Last set context:
rax=0000000000000000 rbx=0000004141414141 rcx=00000000ffffffff
rdx=00007ffaffad59de rsi=0000000000000000 rdi=4141414141414141
rip=00007ffaff92d888 rsp=000000fa265fe9f8 rbp=000000fa265feb00
 r8=00007ffafafed2a0  r9=0000000000000000 r10=000002895760b630
r11=000000fa265fe9f0 r12=0000000000000001 r13=0000000000000000
r14=bfffffffffffffff r15=0000028960140900
iopl=0         nv up ei pl nz na po nc
cs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010206
kool_ade!FileMove+0x128:
00007ffa`ff92d888 c3              ret

0:000> u sprintf
SHSMP64!sprintf [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\sprintf.c @ 99]:
00000000`0a9122e4 4889542410      mov     qword ptr [rsp+10h],rdx
00000000`0a9122e9 4c89442418      mov     qword ptr [rsp+18h],r8
00000000`0a9122ee 4c894c2420      mov     qword ptr [rsp+20h],r9
00000000`0a9122f3 53              push    rbx
00000000`0a9122f4 4883ec60        sub     rsp,60h
00000000`0a9122f8 4885d2          test    rdx,rdx
00000000`0a9122fb 7525            jne     SHSMP64!sprintf+0x3e (00000000`0a912322)
00000000`0a9122fd e8821e0000      call    SHSMP64!_errno (00000000`0a914184)