From c4e1b7f244ce0187974d9a19d540733921add9b2 Mon Sep 17 00:00:00 2001
From: =?utf8?q?V=C3=A1clav=20Slav=C3=ADk?= <vslavik@fastmail.fm>
Date: Sun, 16 Dec 2001 20:35:05 +0000
Subject: [PATCH] cache return value of ftime

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13039 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/common/datetime.cpp | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp
index 23080fef24..7dc3120194 100644
--- a/src/common/datetime.cpp
+++ b/src/common/datetime.cpp
@@ -102,14 +102,20 @@
         #define WX_TIMEZONE _timezone
     #elif defined(__MWERKS__)
         long wxmw_timezone = 28800;
-        #define WX_TIMEZONE wxmw_timezone;
+        #define WX_TIMEZONE wxmw_timezone
     #elif defined(__DJGPP__)
         #include <sys/timeb.h>
+        #include <values.h>
         static long wxGetTimeZone()
         {
-            struct timeb tb;
-            ftime(&tb);
-            return tb.timezone;
+            static long timezone = MAXLONG; // invalid timezone
+            if (timezone == MAXLONG)
+            {
+                struct timeb tb;
+                ftime(&tb);
+                timezone = tb.timezone;
+            }
+            return timezone;
         }
         #define WX_TIMEZONE wxGetTimeZone()
     #else // unknown platform - try timezone
-- 
2.50.0