Prevent overflow for large db on 32-bit CPU

oschwald · oschwald · commit c06679525eab · 2024-12-31T12:26:09.000-08:00
The record size is always divisible by 4.
diff --git a/reader.go b/reader.go
@@ -65,7 +65,7 @@ func FromBytes(buffer []byte) (*Reader, error) {
 		return nil, err
 	}
 
-	searchTreeSize := metadata.NodeCount * metadata.RecordSize / 4
+	searchTreeSize := metadata.NodeCount * (metadata.RecordSize / 4)
 	dataSectionStart := searchTreeSize + dataSectionSeparatorSize
 	dataSectionEnd := uint(metadataStart - len(metadataStartMarker))
 	if dataSectionStart > dataSectionEnd {

Original file line number	Diff line number	Diff line change
`@@ -65,7 +65,7 @@ func FromBytes(buffer []byte) (*Reader, error) {`
`65`	`65`	`return nil, err`
`66`	`66`	`}`
`67`	`67`
`68`		`- searchTreeSize := metadata.NodeCount * metadata.RecordSize / 4`
	`68`	`+ searchTreeSize := metadata.NodeCount * (metadata.RecordSize / 4)`
`69`	`69`	`dataSectionStart := searchTreeSize + dataSectionSeparatorSize`
`70`	`70`	`dataSectionEnd := uint(metadataStart - len(metadataStartMarker))`
`71`	`71`	`if dataSectionStart > dataSectionEnd {`