From bef953a32cd0a8bf3dad5cbbe2798dc3ab57ac5c Mon Sep 17 00:00:00 2001
From: fonsinchen <fonsinchen@openttd.org>
Date: Tue, 8 Apr 2014 19:28:14 +0000
Subject: (svn r26448) -Fix [FS#5970]: Avoid division by 0 when scaling flow
 values.

---
 src/station_cmd.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/station_cmd.cpp')

diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
index 55b6fae14..d637d83c3 100644
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -4314,9 +4314,11 @@ void FlowStat::ReleaseShare(StationID st)
 /**
  * Scale all shares from link graph's runtime to monthly values.
  * @param runtime Time the link graph has been running without compression.
+ * @pre runtime must be greater than 0 as we don't want infinite flow values.
  */
 void FlowStat::ScaleToMonthly(uint runtime)
 {
+	assert(runtime > 0);
 	SharesMap new_shares;
 	uint share = 0;
 	for (SharesMap::iterator i = this->shares.begin(); i != this->shares.end(); ++i) {
-- 
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