From 5932cc8c99ff9704deab0eb309101ed00c4f570d Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 23 Sep 2020 20:16:12 +0200
Subject: Fix crash now that some audio channels are definitely unused.

---
 src/lib/audio_mapping.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lib/audio_mapping.cc b/src/lib/audio_mapping.cc
index 94efbe49b..40dc4ebfa 100644
--- a/src/lib/audio_mapping.cc
+++ b/src/lib/audio_mapping.cc
@@ -237,7 +237,7 @@ AudioMapping::mapped_output_channels () const
 	list<int> mapped;
 
 	for (vector<vector<float> >::const_iterator i = _gain.begin(); i != _gain.end(); ++i) {
-		for (size_t j = 0; j < i->size(); ++j) {
+		BOOST_FOREACH (dcp::Channel j, dcp::used_audio_channels()) {
 			if (abs ((*i)[j]) > minus_96_db) {
 				mapped.push_back (j);
 			}
-- 
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