From f1a421c9f696d33ef1b7aa6fe84a271a05556af8 Mon Sep 17 00:00:00 2001
From: Lucas Hosseini <lucas.hosseini@gmail.com>
Date: Fri, 12 May 2023 13:52:41 +0200
Subject: [PATCH] Fix disassembly scroll history. (#3183)

Avoid calling `erase()` when `topOffsetHistoryPos + 1 >=
`topOffsetHistory.size()`.

closes #3181
---
 src/widgets/DisassemblyWidget.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/widgets/DisassemblyWidget.cpp b/src/widgets/DisassemblyWidget.cpp
index 4d3dbe2b..ebbbfa0d 100644
--- a/src/widgets/DisassemblyWidget.cpp
+++ b/src/widgets/DisassemblyWidget.cpp
@@ -665,8 +665,10 @@ void DisassemblyWidget::on_seekChanged(RVA offset, CutterCore::SeekHistoryType t
 {
     if (type == CutterCore::SeekHistoryType::New) {
         // Erase previous history past this point.
-        topOffsetHistory.erase(topOffsetHistory.begin() + topOffsetHistoryPos + 1,
-                               topOffsetHistory.end());
+        if (topOffsetHistory.size() > topOffsetHistoryPos + 1) {
+            topOffsetHistory.erase(topOffsetHistory.begin() + topOffsetHistoryPos + 1,
+                                   topOffsetHistory.end());
+        }
         topOffsetHistory.push_back(offset);
         topOffsetHistoryPos = topOffsetHistory.size() - 1;
     } else if (type == CutterCore::SeekHistoryType::Undo) {