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Fix crash in sch_navigate_tool when history was empty

This commit is contained in:
Roberto Fernandez Bautista 2022-06-03 23:04:39 +02:00
parent ce79a16ed8
commit 78e465bbd8
1 changed files with 2 additions and 2 deletions
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4
eeschema/tools/sch_navigate_tool.cpp
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@ -145,13 +145,13 @@ int SCH_NAVIGATE_TOOL::Next( const TOOL_EVENT& aEvent )
bool SCH_NAVIGATE_TOOL::CanGoBack()
{
return m_navIndex != m_navHistory.begin();
return m_navHistory.size() > 0 && m_navIndex != m_navHistory.begin();
}
bool SCH_NAVIGATE_TOOL::CanGoForward()
{
return m_navIndex != --m_navHistory.end();
return m_navHistory.size() > 0 && m_navIndex != --m_navHistory.end();
}