Re: [Fwd: PGBuildfarm member narwhal Branch HEAD Status changed from OK to InstallCheck failure]

Tom Lane wrote:
> Dave Page <dpage@postgresql.org> writes:
>> Tom Lane wrote:
>>> If you want to poke at it, I'd suggest changing the ERROR to PANIC
>>> (it's in bufmgr.c) to cause a core dump, run installchecks till you
>>> get a panic, and then look around in the dump to see what you can find.
>>> It'd be particularly interesting to see what the buffer actually
>>> contains.  Also you could look at the corresponding page of the disk
>>> file (which in theory should be the same as the buffer contents,
>>> since this error check is only made just after a read() ...)
> 
>> Hmm, I'll give it a go when I'm back in the office, but bear in mind
>> this is a Mingw build on which debugging is nigh-on impossible.
> 
> I was afraid of that.  Well, at least get a dump of page 104 in that
> index so we can see what's on-disk.

Sure - I'll have to try with 8.1/8.2 unless you have a pg_filedump 
that'll work with -HEAD?

/D