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-rw-r--r--src/backend/access/transam/xlog.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 7fa274922b0..47232fe5ce1 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.116 2003/05/22 14:39:28 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/transam/xlog.c,v 1.117 2003/06/26 18:23:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -347,7 +347,8 @@ static ControlFileData *ControlFile = NULL;
* For XLByteToSeg, do the computation at face value. For XLByteToPrevSeg,
* a boundary byte is taken to be in the previous segment. This is suitable
* for deciding which segment to write given a pointer to a record end,
- * for example.
+ * for example. (We can assume xrecoff is not zero, since no valid recptr
+ * can have that.)
*/
#define XLByteToSeg(xlrp, logId, logSeg) \
( logId = (xlrp).xlogid, \