hi, I found the code in 'backend/access/transam/xloginsert.c' as that: XLogRecordAssemble: if (prev_regbuf && RelFileNodeEquals(regbuf->rnode, prev_regbuf->rnode)) { samerel = true; bkpb.fork_flags |= BKPBLOCK_SAME_REL; prev_regbuf = regbuf; } else samerel = false;
There is the only place that prev_regbuf is assigned, so prev_regbuf will never be assigned. The patch will fix it, Thanks. Zhang Zq