From 21f5cc0bca48ef8d2fdc746385e3afda575fbd9e Mon Sep 17 00:00:00 2001
From: Jeff Davis <jeff@j-davis.com>
Date: Fri, 6 Jun 2025 09:50:53 -0700
Subject: [PATCH v1 1/8] copyfromparse.c: use pg_ascii_tolower() rather than
 tolower().

---
 src/backend/commands/copyfromparse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/commands/copyfromparse.c b/src/backend/commands/copyfromparse.c
index f5fc346e201..f52f2477df1 100644
--- a/src/backend/commands/copyfromparse.c
+++ b/src/backend/commands/copyfromparse.c
@@ -1538,7 +1538,7 @@ GetDecimalFromHex(char hex)
 	if (isdigit((unsigned char) hex))
 		return hex - '0';
 	else
-		return tolower((unsigned char) hex) - 'a' + 10;
+		return pg_ascii_tolower((unsigned char) hex) - 'a' + 10;
 }
 
 /*
-- 
2.43.0

