Add assert.

diff --git a/src/lib/audio_analysis.cc b/src/lib/audio_analysis.cc
index 022c5935d1a6b305fbdd3fbdd9652b587d3acb0a..16deacbd14582b4e85e32263bebc1b11514f2959 100644 (file)
--- a/src/lib/audio_analysis.cc
+++ b/src/lib/audio_analysis.cc
@@ -178,6 +178,8 @@ AudioAnalysis::gain_correction (shared_ptr<const Playlist> playlist)
 pair<AudioAnalysis::PeakTime, int>
 AudioAnalysis::overall_sample_peak () const
 {
+       DCPOMATIC_ASSERT (!_sample_peak.empty ());
+
        optional<PeakTime> pt;
        int c;