MCOL-5932: Fix heap buffer overflow

build/bootstrap_mcs.sh

@@ -446,6 +446,10 @@ fix_config_files()
         fi
     fi
 
+    message Setting lowercase for tablenames and utf-8 as default encoding
+    sed -i "/^.mariadb.$/a lower_case_table_names=1" "$CONFIG_DIR/server.cnf"
+    sed -i "/^.client.$/a default-character-set=utf8" "$CONFIG_DIR/client.cnf"
+
     message Reloading systemd
     systemctl daemon-reload
 }

dbcon/joblist/joblistfactory.cpp

@@ -1129,7 +1129,8 @@ const JobStepVector doAggProject(const CalpontSelectExecutionPlan* csep, JobInfo
             else
               it = pcv.insert(pcv.end(), srcp);
 
-            projectKeys.insert(projectKeys.begin() + std::distance(pcv.begin(), it), tupleKey);
+            auto placeToInsert = std::distance(pcv.begin(), it);
+            projectKeys.insert(projectKeys.begin() + std::min(placeToInsert, projectKeys.end() - projectKeys.begin()), tupleKey);
           }
           else if (doDistinct)  // @bug4250, move forward distinct column if necessary.
           {
@@ -1300,7 +1301,8 @@ const JobStepVector doAggProject(const CalpontSelectExecutionPlan* csep, JobInfo
         else
           it = pcv.insert(pcv.end(), srcp);
 
-        projectKeys.insert(projectKeys.begin() + std::distance(pcv.begin(), it), tupleKey);
+        auto placeToInsert = std::distance(pcv.begin(), it);
+        projectKeys.insert(projectKeys.begin() + std::min(placeToInsert, projectKeys.end() - projectKeys.begin()), tupleKey);
       }
       else if (doDistinct)  // @bug4250, move forward distinct column if necessary.
       {