Re: [PATCH 2/3] winebus.sys: Make the device and instance IDs consistent.

[Alexandre Julliard]

Zebediah Figura  writes:
> - DWORD len;
> - if ((dst = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
> -
>    sprintfW(dst, formatW, ext->busid, ext->vid, ext->pid);
> - if (ext->input == (WORD)-1)
> - {
> -
>    len = snprintfW(NULL, 0, formatW, ext->busid, ext->vid, ext->pid);

This can't work, snprintfW returns -1 on overflow.