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-rw-r--r--libs/pbd/pbd/signals.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libs/pbd/pbd/signals.h b/libs/pbd/pbd/signals.h
index 4ddd72eba8..47e8d143bc 100644
--- a/libs/pbd/pbd/signals.h
+++ b/libs/pbd/pbd/signals.h
@@ -46,7 +46,7 @@ class ScopedConnectionList : public boost::noncopyable
private:
/* this class is not copyable */
- ScopedConnectionList(const ScopedConnectionList&) {}
+ ScopedConnectionList(const ScopedConnectionList&);
/* this lock is shared by all instances of a ScopedConnectionList.
We do not want one mutex per list, and since we only need the lock