From 9a5ad1243a82ec9cd0a5e3f7bd81f8ad6955a863 Mon Sep 17 00:00:00 2001
From: Rob Norris <rw_norris@hotmail.com>
Date: Sun, 5 Jan 2025 15:02:47 +0000
Subject: [PATCH] Prevent potential use of uninitialised variables

---
 src/viktrack.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/viktrack.c b/src/viktrack.c
index ad45760b..ab1d3509 100644
--- a/src/viktrack.c
+++ b/src/viktrack.c
@@ -2173,6 +2173,14 @@ void vik_track_calculate_bounds ( VikTrack *tr )
   if ( tp_iter ) {
     vik_coord_to_latlon ( &(VIK_TRACKPOINT(tp_iter->data)->coord), &topleft );
     vik_coord_to_latlon ( &(VIK_TRACKPOINT(tp_iter->data)->coord), &bottomright );
+  } else {
+    // Defaults when no trackpoints
+    //  values aren't actively used, but avoids potential use of uninitialised variables
+    // (they are reset when first trkpt set or entire track is set)
+    topleft.lat = NAN;
+    topleft.lon = NAN;
+    bottomright.lat = NAN;
+    bottomright.lon = NAN;
   }
   while ( tp_iter ) {