From c2af0de522b9d89ed681035262be9d6ca0452381 Mon Sep 17 00:00:00 2001
From: songjiayang <songjiayang1@gmail.com>
Date: Sun, 12 Jun 2022 08:06:14 +0800
Subject: [PATCH] make sure response error when TOC parse failed

Signed-off-by: songjiayang <songjiayang1@gmail.com>
---
 tsdb/index/index.go | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/tsdb/index/index.go b/tsdb/index/index.go
index 29295c45f..c81441a6b 100644
--- a/tsdb/index/index.go
+++ b/tsdb/index/index.go
@@ -174,18 +174,15 @@ func NewTOCFromByteSlice(bs ByteSlice) (*TOC, error) {
 		return nil, errors.Wrap(encoding.ErrInvalidChecksum, "read TOC")
 	}
 
-	if err := d.Err(); err != nil {
-		return nil, err
-	}
-
-	return &TOC{
+	toc := &TOC{
 		Symbols:           d.Be64(),
 		Series:            d.Be64(),
 		LabelIndices:      d.Be64(),
 		LabelIndicesTable: d.Be64(),
 		Postings:          d.Be64(),
 		PostingsTable:     d.Be64(),
-	}, nil
+	}
+	return toc, d.Err()
 }
 
 // NewWriter returns a new Writer to the given filename. It serializes data in format version 2.