From 90cc612c6f5805c3374f36e37e6625a1d2020cb7 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Mon, 7 Oct 2024 16:55:59 +0200
Subject: [PATCH] GTiff: use main dataset GetSiblingFiles() for overviews

Fixes https://github.com/cogeotiff/rio-tiler/issues/697
---
 frmts/gtiff/gtiffdataset_read.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/frmts/gtiff/gtiffdataset_read.cpp b/frmts/gtiff/gtiffdataset_read.cpp
index f7b2db7644ae..0a1d467d8ad0 100644
--- a/frmts/gtiff/gtiffdataset_read.cpp
+++ b/frmts/gtiff/gtiffdataset_read.cpp
@@ -5835,6 +5835,10 @@ CSLConstList GTiffDataset::GetSiblingFiles()
     {
         return oOvManager.GetSiblingFiles();
     }
+    if (m_poBaseDS)
+    {
+        return m_poBaseDS->GetSiblingFiles();
+    }
 
     m_bHasGotSiblingFiles = true;
     const int nMaxFiles =