.

t/neo/storage/fs1/cmd/fstail/fstail.go

@@ -32,6 +32,7 @@ import (
 	"../../../../storage/fs1"
 
 	"../../../../xcommon/xfmt"
+	"../../../../xcommon/xslice"
 )
 
 
@@ -103,13 +104,7 @@ func fsTail(w io.Writer, path string, ntxn int) (err error) {
 
 		// read raw data inside transaction record
 		dataLen := txnh.DataLen()
-		if int64(cap(data)) < dataLen {
-			// TODO -> CeilPow2
-			data = make([]byte, dataLen)
-		} else {
-			data = data[:dataLen]
-		}
-
+		data = xslice.Realloc64(data, dataLen)
 		_, err = fSeq.ReadAt(data, txnh.DataPos())
 		if err != nil {
 			// XXX -> txnh.Err(...) ?

t/neo/xcommon/xslice/slice.go

@@ -38,7 +38,12 @@ func Resize(b []byte, n int) []byte {
 // The memory for all elements becomes uninitialized.
 // XXX semantic clash with C realloc(3) ? or it does not matter?
 func Realloc(b []byte, n int) []byte {
-	if cap(b) >= n {
+	return Realloc64(b, int64(n))
+}
+
+// Realloc64 is the same as Realloc but for size typed as int64
+func Realloc64(b []byte, n int64) []byte {
+	if int64(cap(b)) >= n {
 		return b[:n]
 	}