Hi Andrew,

When changing this, to be more in line with the "HV" code...

diff --git a/cinelerra-5.1/cinelerra/playbackengine.C
b/cinelerra-5.1/cinelerra/playbackengine.C
index 815e506f..3c2a9368 100644
--- a/cinelerra-5.1/cinelerra/playbackengine.C
+++ b/cinelerra-5.1/cinelerra/playbackengine.C
@@ -172,9 +172,9 @@ void PlaybackEngine::create_cache()
 {
        cache_lock->lock("PlaybackEngine::create_cache");
        if( audio_cache )
-               audio_cache->remove_user();
+               delete audio_cache;
        if( video_cache )
-               video_cache->remove_user();
+               delete video_cache;
        audio_cache = new CICache(preferences);
        video_cache = new CICache(preferences);
        cache_lock->unlock();


...will result in a fix for the memory leak, but does cause a warning
message.

Garbage::~Garbage: title=CICache users=1 was not deleted by
Garbage::remove_user


This was changed with f5725c7e (7/4/20). But also shows that many unrelated
changes cause real issues to hide. I found this by hand, not even using git
bisect. I understand the urge for the garbage collector, but for some
reason not behaving. What I notice is that the 'last' object is empty when
it is actually destroyed by the garbage collector (~CICache). What is the
best way going forward?