From 78a686b0e9e0f6c2af22f4815ea088213a4bd640 Mon Sep 17 00:00:00 2001
From: Aleksey Pivovarov <AMPivovarov@gmail.com>
Date: Tue, 3 Sep 2024 15:15:54 +0200
Subject: [PATCH] EA-1444724 diff: fix assertion in
 UnifiedImaginaryEditor.calculateVisibleRange

GitOrigin-RevId: b727f2e9c3cf22e654bb328ae014af24c1ed2d7e
---
 .../com/intellij/diff/tools/fragmented/UnifiedDiffViewer.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platform/diff-impl/src/com/intellij/diff/tools/fragmented/UnifiedDiffViewer.java b/platform/diff-impl/src/com/intellij/diff/tools/fragmented/UnifiedDiffViewer.java
index 491aeac5d9ea..ac45fac60a76 100644
--- a/platform/diff-impl/src/com/intellij/diff/tools/fragmented/UnifiedDiffViewer.java
+++ b/platform/diff-impl/src/com/intellij/diff/tools/fragmented/UnifiedDiffViewer.java
@@ -1654,7 +1654,7 @@ public class UnifiedDiffViewer extends ListenerDiffViewerBase implements EditorD
       int sideLine1 = lineConvertor.convertApproximate(Math.max(0, line1 - 1));
       int sideLine2 = lineConvertor.convertApproximate(Math.min(DiffUtil.getLineCount(oneSideDocument), line2 + 1));
 
-      if (sideLine1 < 0 || sideLine2 < 0 || sideLine1 > sideLine2) {
+      if (sideLine1 < 0 || sideLine1 > sideLine2 || sideLine2 > DiffUtil.getLineCount(sideDocument)) {
         return ProperTextRange.create(0, 0);
       }
       TextRange sideRange = DiffUtil.getLinesRange(sideDocument, sideLine1, sideLine2, false);