From a7582013010c041166c0b2055de6b73759fe9850 Mon Sep 17 00:00:00 2001
From: Zichang <zc@r8t.uk>
Date: Mon, 6 Oct 2025 00:12:22 +0800
Subject: [PATCH] Fixes crash on full screen scrolling

---
 metainfo.xml           | 1 +
 src/vtbackend/Grid.cpp | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/metainfo.xml b/metainfo.xml
index 92255b7ced..d103173cf9 100644
--- a/metainfo.xml
+++ b/metainfo.xml
@@ -125,6 +125,7 @@
           <li>Adds ability to name tabs (#1690)</li>
           <li>Adds dynamic loading of conpty.dll to allow mouse mode on Windows 10</li>
           <li>Fix empty history jump (#1781)</li>
+          <li>Fixes crash on full screen scrolling</li>
         </ul>
       </description>
     </release>
diff --git a/src/vtbackend/Grid.cpp b/src/vtbackend/Grid.cpp
index 114d0e4fdd..031970d159 100644
--- a/src/vtbackend/Grid.cpp
+++ b/src/vtbackend/Grid.cpp
@@ -525,8 +525,8 @@ void Grid<Cell>::scrollDown(LineCount vN, GraphicsAttributes const& defaultAttri
 
         rotateBuffersRight(n);
 
-        for (Line<Cell>& line: mainPage().subspan(0, unbox<size_t>(n)))
-            line.reset(defaultLineFlags(), defaultAttributes);
+        for (auto const i: ranges::views::iota(0, *n))
+            _lines[i].reset(defaultLineFlags(), defaultAttributes);
         return;
     }