>
> If someone is interested to solve a problem:
>
> $ dd if=/dev/zero bs=8848 count=1 of=a 2>/dev/null
> $ cp a b
> $ cmp a b 0 0x300
> Segmentation fault (core dumped)
> $ cmp a b 0 0x200
> cmp: EOF on b
> $ cmp a b 0x300 0
> cmp: EOF on a
>
> Jean-Marc
>
I've seen a similar problem when doing cmp with CD-ROM
devices (I believe I entered a PR on it.)
I think the problem has to do with cmp's use of mmap(), and
potential issues there... But, that's just a guess on my part.
What makes me think so is that cmp would declare the files
on a CDROM and the files on a disk drive were different, (well,
it would dump core as in your example) - while cat'ing the
file from the CDROM to a temp place on the same disk and
doing the cmp there would indicate there are no differences....
The speculation was that there was some problem with the SCSI
CDROM... but...
- Dave Rivers -
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