From 243151201f4bd40fee1d11fe18804afc35892e51 Mon Sep 17 00:00:00 2001
From: Mikhail Gorbushin <m.gorbushin@corp.mail.ru>
Date: Tue, 7 May 2019 15:54:19 +0300
Subject: [PATCH] [routing] fix assert crash for zero route length

---
 routing/index_router.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/routing/index_router.cpp b/routing/index_router.cpp
index 8f9cde0710..e9130049f2 100644
--- a/routing/index_router.cpp
+++ b/routing/index_router.cpp
@@ -423,8 +423,11 @@ RouterResultCode IndexRouter::DoCalculateRoute(Checkpoints const & checkpoints,
                                       isStartSegmentStrictForward, *graph);
 
     vector<Segment> subroute;
+    static double constexpr kEpsAlmostZero = 1e-7;
     double const contributionCoef =
-        MercatorBounds::DistanceOnEarth(startCheckpoint, finishCheckpoint) / checkpointsLength;
+        !base::AlmostEqualAbs(checkpointsLength, 0.0, kEpsAlmostZero) ?
+          MercatorBounds::DistanceOnEarth(startCheckpoint, finishCheckpoint) / checkpointsLength :
+          kEpsAlmostZero;
 
     AStarSubProgress subProgress(startCheckpoint, finishCheckpoint, contributionCoef);
     progress.AppendSubProgress(subProgress);