Re: division by zero in winword

[Alexandre Julliard]

Vincent Béron  writes:
> So maybe we should actually check for the FAT signature at buff[0x36] or
> buff[0x52] first, and then do the calculations if we actually do find
> one of them.
>
> Changelog:
> Make sure we're really looking at a FAT before doing some calculations
> based on the contents of the first sector of a partition.

That doesn't solve the real issue, a FAT signature is not a guarantee
that the rest of the block is valid, so we still need to check these
values against zero. The code should not crash no matter what garbage
the block contains.