Fixed 64-bit alignment panic on 32-bit platforms

section_inverted_text_index.go

@@ -915,6 +915,8 @@ func (i *invertedTextIndexSection) InitOpaque(args map[string]interface{}) reset
 }
 
 type invertedIndexOpaque struct {
+	bytesWritten uint64 // atomic access to this variable, moved to top to correct alignment issues on ARM, 386 and 32-bit MIPS.
+
 	results []index.Document
 
 	chunkMode uint32
@@ -967,9 +969,8 @@ type invertedIndexOpaque struct {
 
 	fieldAddrs map[int]int
 
-	bytesWritten uint64
-	fieldsSame   bool
-	numDocs      uint64
+	fieldsSame bool
+	numDocs    uint64
 }
 
 func (io *invertedIndexOpaque) Reset() (err error) {

segment.go

@@ -89,6 +89,10 @@ func (*ZapPlugin) Open(path string) (segment.Segment, error) {
 // SegmentBase is a memory only, read-only implementation of the
 // segment.Segment interface, using zap's data representation.
 type SegmentBase struct {
+	// atomic access to these variables, moved to top to correct alignment issues on ARM, 386 and 32-bit MIPS.
+	bytesRead    uint64
+	bytesWritten uint64
+
 	mem                 []byte
 	memCRC              uint32
 	chunkMode           uint32
@@ -105,10 +109,6 @@ type SegmentBase struct {
 	fieldDvNames        []string                     // field names cached in fieldDvReaders
 	size                uint64
 
-	// atomic access to these variables
-	bytesRead    uint64
-	bytesWritten uint64
-
 	m         sync.Mutex
 	fieldFSTs map[uint16]*vellum.FST