From 03d2502cc6fb4859bbb951dbec299d87d1b27311 Mon Sep 17 00:00:00 2001
From: kanjitalk755 <kanjitalk755@yahoo.co.jp>
Date: Sun, 26 Nov 2017 16:22:52 +0900
Subject: [PATCH] fixed: localtime() may return NULL

---
 SheepShaver/src/macos_util.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/SheepShaver/src/macos_util.cpp b/SheepShaver/src/macos_util.cpp
index bb33ace5..8dbc5013 100644
--- a/SheepShaver/src/macos_util.cpp
+++ b/SheepShaver/src/macos_util.cpp
@@ -324,7 +324,9 @@ uint32 TimeToMacTime(time_t t)
 	// This code is taken from glibc 2.2
 
 	// Convert to number of seconds elapsed since 1-Jan-1904
-	struct tm *local = localtime(&t);
+	struct tm result;
+	localtime_r(&t, &result);
+	struct tm *local = &result;
 	const int TM_EPOCH_YEAR = 1900;
 	const int MAC_EPOCH_YEAR = 1904;
 	int a4 = ((local->tm_year + TM_EPOCH_YEAR) >> 2) - !(local->tm_year & 3);