diff --git a/examples/Advanced/AudioParticles/AudioParticles.cpp b/examples/Advanced/AudioParticles/AudioParticles.cpp
index dc67031..3783545 100644
--- a/examples/Advanced/AudioParticles/AudioParticles.cpp
+++ b/examples/Advanced/AudioParticles/AudioParticles.cpp
@@ -96,9 +96,14 @@ void AudioParticles::operator()(const halp::tick_musical& t)
   }
 
   ossia::remove_erase_if(m_playheads, [this](const auto& playhead) {
+    if(outputs.audio.channels <= playhead.channel)
+      return true;
+    if(std::ssize(m_sounds) <= playhead.index)
+      return true;
+
     auto& sound = m_sounds[playhead.index];
-    return playhead.frame >= sound[0].size() || (m_sounds.size() <= playhead.index)
-           || (outputs.audio.channels <= playhead.channel);
+    SCORE_ASSERT(!sound.empty());
+    return playhead.frame >= std::ssize(sound[0]);
   });
 }
 }
diff --git a/examples/Advanced/MidiScaler/MidiScroller.hpp b/examples/Advanced/MidiScaler/MidiScroller.hpp
index 4ad29fd..f1c825c 100644
--- a/examples/Advanced/MidiScaler/MidiScroller.hpp
+++ b/examples/Advanced/MidiScaler/MidiScroller.hpp
@@ -68,8 +68,8 @@ struct MidiScroller
 
     if(track < 0)
       track = 0;
-    if(track >= inputs.midi.midifile.tracks.size())
-      track = inputs.midi.midifile.tracks.size() - 1;
+    if(track >= tracks)
+      track = tracks - 1;
 
     for(const auto& ev : inputs.midi.midifile.tracks[track])
     {
diff --git a/examples/Advanced/MidiScaler/StrStream.hpp b/examples/Advanced/MidiScaler/StrStream.hpp
index 3a33be7..2d6b6d1 100644
--- a/examples/Advanced/MidiScaler/StrStream.hpp
+++ b/examples/Advanced/MidiScaler/StrStream.hpp
@@ -481,6 +481,8 @@ inline strstreambuf::pos_type strstreambuf::seekoff(
       if(pos_in == pos_out)
         return pos_type(off_type(-1));
       break;
+    default:
+      break;
   }
 
   if(pos_in && gptr() == nullptr)