From fe7c97afa00272cb7e42ca2fbb5ae33b9b18fd87 Mon Sep 17 00:00:00 2001
From: Ben Johnson <benbjohnson@yahoo.com>
Date: Mon, 11 Apr 2022 08:26:00 -0600
Subject: [PATCH] Fix size/PageSize calculation to be int64.

---
 rbf/db.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/rbf/db.go b/rbf/db.go
index 9b082d5aa..a03b2652b 100644
--- a/rbf/db.go
+++ b/rbf/db.go
@@ -237,11 +237,11 @@ func (db *DB) openWAL() (err error) {
 	}
 
 	if fileSize != int64(pageN*PageSize) {
-		if err := db.walFile.Truncate(int64(pageN * PageSize)); err != nil {
+		if err := db.walFile.Truncate(int64(pageN) * PageSize); err != nil {
 			return fmt.Errorf("wal truncate: %w", err)
 		}
 	}
-	if _, err := db.walFile.Seek(int64(pageN*PageSize), io.SeekStart); err != nil {
+	if _, err := db.walFile.Seek(int64(pageN)*PageSize, io.SeekStart); err != nil {
 		return fmt.Errorf("wal seek: %w", err)
 	}
 	db.walPageN = pageN
@@ -414,7 +414,7 @@ func (db *DB) checkpoint() (err error) {
 		// Truncate data file if it has shrunk.
 		if fi, err := db.file.Stat(); err != nil {
 			db.logger.Errorf("stat db file: %w", err)
-		} else if sz := int64(pageN * PageSize); sz > 0 && fi.Size() > sz {
+		} else if sz := int64(pageN) * PageSize; sz > 0 && fi.Size() > sz {
 			if err := db.file.Truncate(sz); err != nil {
 				db.logger.Errorf("truncate db file: %w", err)
 			}
@@ -571,7 +571,7 @@ func (db *DB) WALSize() int64 {
 }
 
 func (db *DB) walSize() int64 {
-	return int64(db.walPageN * PageSize)
+	return int64(db.walPageN) * PageSize
 }
 
 // init initializes a new database file.
@@ -649,7 +649,7 @@ func (db *DB) Begin(writable bool) (_ *Tx, err error) {
 	// Wait for WAL size to be below threshold, if we're going to write.
 	// Reads don't care.
 	if writable {
-		for int64(db.walPageN*PageSize) > db.cfg.MaxWALCheckpointSize {
+		for int64(db.walPageN)*PageSize > db.cfg.MaxWALCheckpointSize {
 			if db.isDead != nil {
 				err := db.isDead
 				cleanup()