Configure Undefined Behaviour Sanitizer (#6290)

include/contractor/contractor_config.hpp

@@ -43,10 +43,8 @@ namespace contractor
 struct ContractorConfig final : storage::IOConfig
 {
     ContractorConfig()
-        : IOConfig({".osrm.ebg", ".osrm.ebg_nodes", ".osrm.properties"},
-                   {},
-                   {".osrm.hsgr", ".osrm.enw"}),
-          requested_num_threads(0)
+        : IOConfig(
+              {".osrm.ebg", ".osrm.ebg_nodes", ".osrm.properties"}, {}, {".osrm.hsgr", ".osrm.enw"})
     {
     }
 
@@ -62,16 +60,16 @@ struct ContractorConfig final : storage::IOConfig
     updater::UpdaterConfig updater_config;
 
     // DEPRECATED to be removed in v6.0
-    bool use_cached_priority;
+    bool use_cached_priority = false;
 
-    unsigned requested_num_threads;
+    unsigned requested_num_threads = 0;
 
     // DEPRECATED to be removed in v6.0
     // A percentage of vertices that will be contracted for the hierarchy.
     // Offers a trade-off between preprocessing and query time.
     // The remaining vertices form the core of the hierarchy
     //(e.g. 0.8 contracts 80 percent of the hierarchy, leaving a core of 20%)
-    double core_factor;
+    double core_factor = 1.0;
 };
 } // namespace contractor
 } // namespace osrm