Brendan Jurd <direvus(at)gmail(dot)com> writes:
> TRAP: FailedAssertion("!((data - start) == data_size)", File:
> "heaptuple.c", Line: 255)
[ scratches head ... ] That implies that heap_fill_tuple came to a
different conclusion about a tuple's data size than the immediately
preceding heap_compute_data_size. Which I would sure want to believe
is impossible. Have you checked for flaky memory on this machine?
regards, tom lane