Re: Bug in nbtree optimization to skip > operator comparisons (or < comparisons in backwards scans)

Looks like an oversight when refactoring BTScanOpaqueData.firstPage into using function argument in 06b10f80ba4.

@@ -2487,14 +2486,13 @@ _bt_endpoint(IndexScanDesc scan, ScanDirection dir)
104
105     /* remember which buffer we have pinned */
106     so->currPos.buf = buf;
107 -   so->firstPage = true;
108
109     _bt_initialize_more_data(so, dir);
110
111     /*
112      * Now load data from the first page of the scan.
113      */
114 -   if (!_bt_readpage(scan, dir, start))
115 +   if (!_bt_readpage(scan, dir, start, false))

Attached is a fix.

Thank you!

Regards,

Pavel