https://bugs.kde.org/show_bug.cgi?id=245279





--- Comment #2 from Nicolás Alvarez <nicolas alvarez gmail com>  2010-07-27 22:01:45 ---
commit 776ebc2360fb54d5f2e3aed75ff7be9b7527e07b
Author: Nicolás Alvarez <nicolas.alvarez@gmail.com>
Date:   Fri Jul 23 21:08:55 2010 -0300

    backport to stable: Fix behavior of page history in the documentation
viewer.

    BUG:245279

diff --git a/shell/documentationview.cpp b/shell/documentationview.cpp
index fe4e0e1..71486f3 100644
--- a/shell/documentationview.cpp
+++ b/shell/documentationview.cpp
@@ -180,6 +180,15 @@ void DocumentationView::addHistory(KSharedPtr<
KDevelop::IDocumentation > doc)
 {
     mBack->setEnabled( !mHistory.isEmpty() );
     mForward->setEnabled(false);
+
+    // clear all history following the current item, unless we're already
+    // at the end (otherwise this code crashes when history is empty, which
+    // happens when addHistory is first called on startup to add the
+    // homepage)
+    if (mCurrent+1 < mHistory.end()) {
+        mHistory.erase(mCurrent+1, mHistory.end());
+    }
+
     mHistory.append(doc);
     mCurrent=mHistory.end()-1;
 }

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