From 1572aa8a59aa927bd6a4366e9881f042a32d2590 Mon Sep 17 00:00:00 2001
From: Fabrice Bellard <fabrice@bellard.org>
Date: Sat, 24 May 2025 11:32:22 +0200
Subject: [PATCH] avoid win32 crash in getTimezoneOffset() if time is < 1970
 (#238)

---
 quickjs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/quickjs.c b/quickjs.c
index 35411ef..3681af2 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -44429,9 +44429,13 @@ static int getTimezoneOffset(int64_t time)
         time_t gm_ti, loc_ti;
 
         tm = gmtime(&ti);
+        if (!tm)
+            return 0;
         gm_ti = mktime(tm);
 
         tm = localtime(&ti);
+        if (!tm)
+            return 0;
         loc_ti = mktime(tm);
 
         res = (gm_ti - loc_ti) / 60;