From 01e66b081842e318ac4738ad59cea5a492d786bf Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Sat, 27 Jan 2024 13:39:12 -1000
Subject: [PATCH] ALTAIRZ80: Properly check for failed return from time() API

---
 AltairZ80/s100_scp300f.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AltairZ80/s100_scp300f.c b/AltairZ80/s100_scp300f.c
index a2c49a50..64c084d5 100644
--- a/AltairZ80/s100_scp300f.c
+++ b/AltairZ80/s100_scp300f.c
@@ -607,7 +607,7 @@ int days_since_1980(void) {
 
     local_now = mktime(&currentTime);
 
-    if (time(&local_now) == -1) return 0;
+    if (time(&local_now) == (time_t)-1) return 0;
 
     return (int)floor(difftime(local_now, jan1980) / 86400);
 }