IssueTracker

fwiw: I've seen (variations of) this very small difference in various apps:

│ │ ├── j$/util/Collection$-EL.class
│ │ │ ├── procyon -ec {}
│ │ │ │ @@ -1,14 +1,14 @@
│ │ │ │
│ │ │ │  package j$.util;
│ │ │ │
│ │ │ │  import java.util.Comparator;
│ │ │ │  import java.util.Set;
│ │ │ │ -import java.util.List;
│ │ │ │  import java.util.SortedSet;
│ │ │ │ +import java.util.List;
│ │ │ │  import java.util.LinkedHashSet;
│ │ │ │  import java.util.Iterator;
│ │ │ │  import java.util.Objects;
│ │ │ │  import j$.util.function.Consumer;
│ │ │ │  import java.util.Collection;
│ │ │ │  import java.util.OptionalLong;
│ │ │ │  import java.util.OptionalInt;
│ │ │ │ @@ -142,20 +142,20 @@
│ │ │ │              return ((j$.util.Collection)collection).spliterator();
│ │ │ │          }
│ │ │ │          if (collection instanceof LinkedHashSet) {
│ │ │ │              final LinkedHashSet obj = (LinkedHashSet)collection;
│ │ │ │              Objects.requireNonNull(obj);
│ │ │ │              return (Spliterator)new Spliterators$IteratorSpliterator((Collection)obj, 17);
│ │ │ │          }
│ │ │ │ +        if (collection instanceof List) {
│ │ │ │ +            return List$-CC.$default$spliterator((List)collection);
│ │ │ │ +        }
│ │ │ │          if (collection instanceof SortedSet) {
│ │ │ │              final SortedSet set = (SortedSet)collection;
│ │ │ │              return (Spliterator)new SortedSet$1(set, (Collection)set, 21);
│ │ │ │          }
│ │ │ │ -        if (collection instanceof List) {
│ │ │ │ -            return List$-CC.$default$spliterator((List)collection);
│ │ │ │ -        }
│ │ │ │          if (collection instanceof Set) {
│ │ │ │              return Set$-CC.$default$spliterator((Set)(SortedSet)collection);
│ │ │ │          }
│ │ │ │          return Collection$-CC.$default$spliterator(collection);
│ │ │ │      }
│ │ │ │  }

Hey Clement, do you have any ideas on producing different dex files from build to build?

The example shown above matches a non deterministic issue we had in L8 for classes ending with $-EL. This issue should be fixed on tip of tree. If you can reproduce on ToT let us know, I'll work on another fix. If the changes include something else than ordering inside the $-EL methods, let us know too, that would need to be fixed.

How do I use this "tip of tree"?