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-rw-r--r--src/station_cmd.cpp2
1 files changed, 2 insertions, 0 deletions
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) {