From cfb4a7f55656b2a7b8160adbdd533b23a0ea62a0 Mon Sep 17 00:00:00 2001
From: Travis Bischel <travis.bischel+github@gmail.com>
Date: Mon, 8 Nov 2021 17:44:48 -0700
Subject: [PATCH] kgo: error if RecordReader layout is empty

---
 pkg/kgo/record_formatter.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/kgo/record_formatter.go b/pkg/kgo/record_formatter.go
index 46c3991b..2b1d2160 100644
--- a/pkg/kgo/record_formatter.go
+++ b/pkg/kgo/record_formatter.go
@@ -966,6 +966,10 @@ func (p *parseRecordBits) set(r parseRecordBits)     { *p = *p | r }
 func (p parseRecordBits) has(r parseRecordBits) bool { return p&r != 0 }
 
 func (r *RecordReader) parseReadLayout(layout string) error {
+	if len(layout) == 0 {
+		return errors.New("RecordReader: invalid empty format")
+	}
+
 	var (
 		// If we are reading by size, we parse the layout size into one
 		// of these variables. When reading, we use the captured