From 9d32a72a4c8675533c9c605672fd6ae882b5cdb7 Mon Sep 17 00:00:00 2001 From: Veratil Date: Wed, 21 Aug 2019 01:45:13 -0500 Subject: [PATCH] Fix #4188 - Check for failed std::find --- src/gui/editors/PianoRoll.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/gui/editors/PianoRoll.cpp b/src/gui/editors/PianoRoll.cpp index 6950c0005ef..35df428da35 100644 --- a/src/gui/editors/PianoRoll.cpp +++ b/src/gui/editors/PianoRoll.cpp @@ -537,7 +537,10 @@ void PianoRoll::markSemiTone( int i ) for (int ix = 0; ix < aok.size(); ++ix) { i = qFind(m_markedSemiTones.begin(), m_markedSemiTones.end(), aok.at(ix)); - m_markedSemiTones.erase(i); + if (i != m_markedSemiTones.end()) + { + m_markedSemiTones.erase(i); + } } } else