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-rw-r--r--src/lib/audio_buffers.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/lib/audio_buffers.cc b/src/lib/audio_buffers.cc
index 6d4eb8514..7b3af91e0 100644
--- a/src/lib/audio_buffers.cc
+++ b/src/lib/audio_buffers.cc
@@ -209,6 +209,7 @@ AudioBuffers::accumulate_channel (AudioBuffers const * from, int from_channel, i
{
int const N = frames ();
assert (from->frames() == N);
+ assert (to_channel <= _channels);
float* s = from->data (from_channel);
float* d = _data[to_channel];