BuildOtherNamesFromMachineName writes sizeof(LPVOID) bytes but the test reserved just sizeof(DWORD), which makes a difference at amd64 and gets detected by ASan.
<details> <summary>ASan output</summary>
``` ================================================================= ==spoolss_test.exe==700==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffffe1ffba0 at pc 0x6ffffdc53e38 bp 0x7ffffe1ffa40 sp 0x7ffffe1ffa88 WRITE of size 8 at 0x7ffffe1ffba0 thread T0 #0 0x6ffffdc53e37 in BuildOtherNamesFromMachineName .../wine/dlls/spoolss/spoolss_main.c:99:11 #1 0x00014000170e in test_BuildOtherNamesFromMachineName .../wine/dlls/spoolss/tests/spoolss.c:131:11 #2 0x000140001030 in func_spoolss .../wine/dlls/spoolss/tests/spoolss.c:218:5 #3 0x000140003ede in run_test .../wine/include/wine/test.h:765:5 #4 0x000140003a8e in main .../wine/include/wine/test.h #5 0x000140004963 in mainCRTStartup .../wine/dlls/msvcrt/crt_main.c:58:11 #6 0x6fffffc3565e in BaseThreadInitThunk .../wine/dlls/kernel32/thread.c:61:24 #7 0x6fffffdbbcc2 in RtlUserThreadStart (C:\windows\system32\ntdll.dll+0x17004bcc2)
Address 0x7ffffe1ffba0 is located in stack of thread T0 at offset 64 in frame #0 0x00014000164f in test_BuildOtherNamesFromMachineName .../wine/dlls/spoolss/tests/spoolss.c:122
This frame has 2 object(s): [32, 40) 'buffers' (line 123) [64, 68) 'numentries' (line 124) <== Memory access at offset 64 partially overflows this variable HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork (longjmp, SEH and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-buffer-overflow .../wine/dlls/spoolss/spoolss_main.c:99:11 in BuildOtherNamesFromMachineName Shadow bytes around the buggy address: 0x7ffffe1ff900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ff980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ffa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ffa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ffb00: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 =>0x7ffffe1ffb80: 00 f2 f2 f2[04]f3 f3 f3 00 00 00 00 00 00 00 00 0x7ffffe1ffc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ffc80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f8 f8 f8 f8 0x7ffffe1ffd00: f8 f8 f8 f8 f3 f3 f3 f3 00 00 00 00 00 00 00 00 0x7ffffe1ffd80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 0x7ffffe1ffe00: 00 00 00 00 00 00 00 00 00 00 00 00 f2 f2 f2 f2 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb ==spoolss_test.exe==700==ABORTING ```
</details>