I worked with Jim Nasby and we found this is the line that is failing on Gerbil in the build farm during initdb: tqual.c, line 844 in 8.0.X
if (HeapTupleHeaderGetCmin(tuple) >= snapshot->curcid) This particular line was last modified in 2002. However, this was a file that was changed as part of the VACUUM tuple chain commit: revision 1.81.4.2 date: 2005/08/25 19:45:01; author: tgl; state: Exp; lines: +7 -4 Back-patch fixes for problems with VACUUM destroying t_ctid chains too soon, and with insufficient paranoia in code that follows t_ctid links. This patch covers the 8.0 branch. and the date of the commit to 8.0.X corresponds to the date that failures started to happen: http://pgbuildfarm.org/cgi-bin/show_history.pl?nm=gerbil&br=REL8_0_STABLE -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend