From cb6a5097d77d05418c48ae9c051c7917b97c0fa4 Mon Sep 17 00:00:00 2001
From: markus <markus.kuehni@triviso.ch>
Date: Fri, 21 Nov 2025 15:20:20 +0100
Subject: [PATCH] Make sure the null terminator len_for_wcs_term is included in
 the decision to realloc.

---
 convert.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/convert.c b/convert.c
index baf647fe..a12262c9 100644
--- a/convert.c
+++ b/convert.c
@@ -1064,12 +1064,12 @@ setup_getdataclass(SQLLEN * const length_return, const char ** const ptr_return,
 		 */
 		len_for_wcs_term = 1;
 	}
-	if (changed || needbuflen > cbValueMax)
+	if (changed || needbuflen + len_for_wcs_term > cbValueMax)
 	{
-		if (needbuflen > (SQLLEN) pgdc->ttlbuflen)
+		if (needbuflen + len_for_wcs_term > (SQLLEN) pgdc->ttlbuflen)
 		{
 			pgdc->ttlbuf = realloc(pgdc->ttlbuf, needbuflen + len_for_wcs_term);
-			pgdc->ttlbuflen = needbuflen;
+			pgdc->ttlbuflen = needbuflen + len_for_wcs_term;
 		}
 
 		already_processed = FALSE;