From 383c232bc2f1661923177437e48ea4cf6bd4e304 Mon Sep 17 00:00:00 2001
From: Tomasz Kramkowski <tk@the-tk.com>
Date: Sun, 7 Nov 2021 22:18:21 +0000
Subject: use safe_islower to avoid UB

---
 pack.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'pack.c')

diff --git a/pack.c b/pack.c
index 5a603e0..e18455c 100644
--- a/pack.c
+++ b/pack.c
@@ -35,7 +35,7 @@ enum pack_status pack(void *buf_, size_t size, const char *fmt, ...)
 		size_t s;
 		union { uintmax_t unsigned_; intmax_t signed_; } v;
 		tr_debug("i: %d, fmt[i]: %c", i, fmt[i]);
-		sign = islower(fmt[i]);
+		sign = safe_islower(fmt[i]);
 		switch (fmt[i]) {
 		case '>': endianness = PACK_ENDIAN_BIG; continue;
 		case '<': endianness = PACK_ENDIAN_LITTLE; continue;
-- 
cgit v1.2.3-54-g00ecf