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guard against an empty alternative path in ExtractRouteNames

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Dennis Luxen 2014-06-06 11:50:14 +02:00
parent 11d4c04cea
commit d111a0e5e6
1 changed files with 5 additions and 1 deletions
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4
Algorithms/ExtractRouteNames.h
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@ -134,8 +134,12 @@ template <class DataFacadeT, class SegmentT> struct ExtractRouteNames
std::sort(alternative_path_set_difference.begin(), std::sort(alternative_path_set_difference.begin(),
alternative_path_set_difference.end(), alternative_path_set_difference.end(),
length_comperator); length_comperator);
if (!alternative_path_segments.empty())
{
alternative_segment_2 = PickNextLongestSegment(alternative_path_set_difference, alternative_segment_2 = PickNextLongestSegment(alternative_path_set_difference,
alternative_path_segments[0].name_id); alternative_path_segments[0].name_id);
}
// move the segments into the order in which they occur. // move the segments into the order in which they occur.
if (shortest_segment_1.position > shortest_segment_2.position) if (shortest_segment_1.position > shortest_segment_2.position)