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-rw-r--r--libs/ardour/polarity_processor.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/libs/ardour/polarity_processor.cc b/libs/ardour/polarity_processor.cc
index 35d74a5795..7123e821f6 100644
--- a/libs/ardour/polarity_processor.cc
+++ b/libs/ardour/polarity_processor.cc
@@ -56,7 +56,8 @@ PolarityProcessor::configure_io (ChanCount in, ChanCount out)
void
PolarityProcessor::run (BufferSet& bufs, samplepos_t /*start_sample*/, samplepos_t /*end_sample*/, double /*speed*/, pframes_t nframes, bool)
{
- int chn = 0;
+ size_t chn = 0;
+ assert (bufs.count().n_audio () <= _current_gain.size());
if (!_active && !_pending_active) {
/* fade all to unity */
for (BufferSet::audio_iterator i = bufs.audio_begin(); i != bufs.audio_end(); ++i, ++chn) {