From 815bd0c66f7f64aa6edd6011b8e065cc9e1e641b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20G=C3=BCndling?= <felix.guendling@gmail.com>
Date: Sat, 7 Dec 2024 03:49:18 +0100
Subject: [PATCH] gtfs loader: make time monotonic increasing

---
 src/loader/gtfs/load_timetable.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/loader/gtfs/load_timetable.cc b/src/loader/gtfs/load_timetable.cc
index 2bb0c81c..2aa622a2 100644
--- a/src/loader/gtfs/load_timetable.cc
+++ b/src/loader/gtfs/load_timetable.cc
@@ -137,6 +137,13 @@ void load_timetable(loader_config const& config,
             sort_by(t.seq_numbers_, t.stop_seq_, t.event_times_,
                     t.stop_headsigns_, t.distance_traveled_);
       }
+
+      auto pred = minutes_after_midnight_t{0U};
+      for (auto& [arr, dep] : t.event_times_) {
+        arr = std::max(pred, arr);
+        dep = std::max(arr, dep);
+        pred = dep;
+      }
     }
   }