From 3c3b889f467d14b835888453734fc899c5ca1d7b Mon Sep 17 00:00:00 2001
From: Zach Musgrave <zach@dolthub.com>
Date: Thu, 19 Dec 2024 15:59:31 -0800
Subject: [PATCH] Bug fix for windows line endings

---
 core/dataloader/csvreader.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/dataloader/csvreader.go b/core/dataloader/csvreader.go
index 3c75f66cda..b220c67934 100644
--- a/core/dataloader/csvreader.go
+++ b/core/dataloader/csvreader.go
@@ -295,7 +295,10 @@ func (csvr *csvReader) parseQuotedField(rs *recordState) (kontinue bool, err err
 	const quoteLen = len(`"`)
 	dl := len(csvr.delim)
 	recordStartLine := csvr.numLine
-	fullField := rs.line
+	// full copy needed here because we append rs.line to fullField, and this can result in buffer corruption in
+	// some cases (namely when windows line endings are present)
+	fullField := make([]byte, len(rs.line))
+	copy(fullField, rs.line)
 
 	// Quoted string field
 	rs.line = rs.line[quoteLen:]