Fix WAL file cutoff point calculation in pg_standby.

Patch by Simon Riggs, per bug report from Ferenc Felhoffer

diff --git a/contrib/pg_standby/pg_standby.c b/contrib/pg_standby/pg_standby.c
index e8597c69738a308a9fd66b5132fe3ed51cedc475..15dc3442049a2c020f8f8770074151402bc4c032 100644 (file)
--- a/contrib/pg_standby/pg_standby.c
+++ b/contrib/pg_standby/pg_standby.c
@@ -1,5 +1,5 @@
 /*
- * $PostgreSQL: pgsql/contrib/pg_standby/pg_standby.c,v 1.12 2008/05/17 01:28:21 adunstan Exp $ 
+ * $PostgreSQL: pgsql/contrib/pg_standby/pg_standby.c,v 1.13 2008/07/08 15:11:58 heikki Exp $ 
  *
  *
  * pg_standby.c
@@ -323,7 +323,7 @@ SetWALFileNameForCleanup(void)
            if (seg_diff > seg)
            {
                log_diff++;
-               seg = MaxSegmentsPerLogFile - seg_diff;
+               seg = MaxSegmentsPerLogFile - (seg_diff - seg);
            }
            else
                seg -= seg_diff;