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

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.
        regards, tom lane