From f7dfefee72dea0505b56b2f1f7f86709bb9033cd Mon Sep 17 00:00:00 2001
From: "B. Scott Michel" <scooter.phd@gmail.com>
Date: Thu, 21 Mar 2024 13:55:52 -1000
Subject: [PATCH] SCP: sprint_val comma bug

- Fix comma separator code segmentation fault: "ndigit - 3" can become a
  very large unsigned number for ndigit < 3.
---
 scp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scp.c b/scp.c
index 18933c6e..7a56fc5a 100644
--- a/scp.c
+++ b/scp.c
@@ -12459,7 +12459,7 @@ switch (format) {
                 break;
         ndigits = MAX_WIDTH - digit;
         commas = (ndigits - 1)/3;
-        for (digit=0; digit<ndigits-3; digit++)
+        for (digit=0; (digit + 3) < ndigits; digit++)
             dbuf[MAX_WIDTH + (digit - ndigits) - (ndigits - digit - 1)/3] = dbuf[MAX_WIDTH + (digit - ndigits)];
         for (digit=1; digit<=commas; digit++)
             dbuf[MAX_WIDTH - (digit * 4)] = ',';