[Dovecot] Assertion Failure in mbox-sync.c

[Timo Sirainen]

On 18.5.2005, at 03:00, Todd Burroughs wrote:

>> sync_ctx->input is different than sync_ctx->file_input, where the
>> statbuf was taken from (took a while to notice this :). Could you do 
>> the
>> same for it?
>
> There's an odd value in here...
> I checked and the values look correct, other than st_size.

That's a gdb bug (or gcc debug information writer bug or something). 
64bit numbers seem to be quite often broken with gdb. Usually they can 
be fixed by just discarding the highest 32 bits, but with struct stat 
the whole st_size seems to points to wrong location.

> I don't think that NFS would return an older value, as there is one 
> system
> wide cache per machine.  It is possible to turn caching off, so I could
> test this.  My understanding is that the client will cache attributes 
> for
> some period of time, 3 to 60 seconds are the default min/max for Linux.
> I don't know how it determines how long it actually caches them for.

Right, I thought about this too after sending the mail. The caching 
problem could happen only if another computer modified the file, so the 
test program couldn't really trigger it.

But included a patch to Dovecot, it should give some more information 
now instead of just crashing.
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