Tailrec bug is fixed.

test/dotc/scala-collections.whitelist

@@ -63,23 +63,17 @@
 ./scala-scala/src/library/scala/Product7.scala
 ./scala-scala/src/library/scala/Product8.scala
 ./scala-scala/src/library/scala/Product9.scala
-
 ./scala-scala/src/library/scala/Proxy.scala
 ./scala-scala/src/library/scala/SerialVersionUID.scala
 ./scala-scala/src/library/scala/Serializable.scala
 ./scala-scala/src/library/scala/Specializable.scala
 ./scala-scala/src/library/scala/Symbol.scala
 ./scala-scala/src/library/scala/UninitializedError.scala
 ./scala-scala/src/library/scala/UninitializedFieldError.scala
-
-# https://github.com/lampepfl/dotty/issues/912
-# ./scala-scala/src/library/scala/collection/IndexedSeqOptimized.scala
-
+./scala-scala/src/library/scala/collection/IndexedSeqOptimized.scala
 ./scala-scala/src/library/scala/collection/IterableLike.scala
 ./scala-scala/src/library/scala/collection/Iterator.scala
 ./scala-scala/src/library/scala/collection/LinearSeqOptimized.scala
-
-# https://github.com/lampepfl/dotty/issues/914
 ./scala-scala/src/library/scala/collection/TraversableOnce.scala
 ./scala-scala/src/library/scala/collection/generic/Growable.scala
 ./scala-scala/src/library/scala/collection/generic/TraversableForwarder.scala
@@ -88,7 +82,6 @@
 ./scala-scala/src/library/scala/collection/immutable/IndexedSeq.scala
 ./scala-scala/src/library/scala/collection/immutable/Iterable.scala
 ./scala-scala/src/library/scala/collection/immutable/LinearSeq.scala
-
 ./scala-scala/src/library/scala/collection/immutable/List.scala
 ./scala-scala/src/library/scala/collection/immutable/MapProxy.scala
 ./scala-scala/src/library/scala/collection/immutable/PagedSeq.scala
@@ -135,11 +128,6 @@
 ./scala-scala/src/library/scala/transient.scala
 ./scala-scala/src/library/scala/unchecked.scala
 ./scala-scala/src/library/scala/volatile.scala
-
-# cyclic reference
-./scala-scala/src/library/scala/collection/GenSeq.scala
-./scala-scala/src/library/scala/collection/GenSeqLike.scala
-
 ./scala-scala/src/library/scala/collection/BitSet.scala
 ./scala-scala/src/library/scala/collection/BitSetLike.scala
 ./scala-scala/src/library/scala/collection/BufferedIterator.scala
@@ -149,16 +137,13 @@
 ./scala-scala/src/library/scala/collection/GenIterableLike.scala
 ./scala-scala/src/library/scala/collection/GenMap.scala
 ./scala-scala/src/library/scala/collection/GenMapLike.scala
-
-# cyclic reference https://github.com/lampepfl/dotty/issues/935
-#./scala-scala/src/library/scala/collection/GenSeq.scala
-#./scala-scala/src/library/scala/collection/GenSeqLike.scala
+./scala-scala/src/library/scala/collection/GenSeq.scala
+./scala-scala/src/library/scala/collection/GenSeqLike.scala
 
 # seems https://github.com/lampepfl/dotty/issues/916
 #./scala-scala/src/library/scala/collection/GenSet.scala
 
-# triggers cyclic reference
-#./scala-scala/src/library/scala/collection/GenSetLike.scala
+./scala-scala/src/library/scala/collection/GenSetLike.scala
 
 # breaks genMapLike https://github.com/lampepfl/dotty/issues/937
 #./scala-scala/src/library/scala/collection/GenTraversable.scala
@@ -170,38 +155,34 @@
 ./scala-scala/src/library/scala/collection/Iterable.scala
 ./scala-scala/src/library/scala/collection/IterableProxy.scala
 ./scala-scala/src/library/scala/collection/IterableProxyLike.scala
-
 ./scala-scala/src/library/scala/collection/JavaConversions.scala
 ./scala-scala/src/library/scala/collection/JavaConverters.scala
 ./scala-scala/src/library/scala/collection/LinearSeq.scala
-
-# tailrec bug
-#./scala-scala/src/library/scala/collection/LinearSeqLike.scala
-
+./scala-scala/src/library/scala/collection/LinearSeqLike.scala
 ./scala-scala/src/library/scala/collection/Map.scala
 ./scala-scala/src/library/scala/collection/MapLike.scala
 ./scala-scala/src/library/scala/collection/MapProxy.scala
 ./scala-scala/src/library/scala/collection/MapProxyLike.scala
 ./scala-scala/src/library/scala/collection/Parallel.scala
 ./scala-scala/src/library/scala/collection/Parallelizable.scala
-# tailrec bug
-#./scala-scala/src/library/scala/collection/Searching.scala
+./scala-scala/src/library/scala/collection/Searching.scala
 
 
 # cyclic reference involving trait Seq
 #./scala-scala/src/library/scala/collection/Seq.scala
-#./scala-scala/src/library/scala/collection/SeqExtractors.scala
+
+./scala-scala/src/library/scala/collection/SeqExtractors.scala
+
+# https://github.com/lampepfl/dotty/issues/945
 #./scala-scala/src/library/scala/collection/SeqLike.scala
-#./scala-scala/src/library/scala/collection/SeqProxy.scala
 
+./scala-scala/src/library/scala/collection/SeqProxy.scala
 ./scala-scala/src/library/scala/collection/SeqProxyLike.scala
 
 # seems https://github.com/lampepfl/dotty/issues/916
 #./scala-scala/src/library/scala/collection/Set.scala
 
-# cyclic reference involving trait Set
-#./scala-scala/src/library/scala/collection/SetLike.scala
-
+./scala-scala/src/library/scala/collection/SetLike.scala
 ./scala-scala/src/library/scala/collection/SetProxy.scala
 ./scala-scala/src/library/scala/collection/SetProxyLike.scala
 ./scala-scala/src/library/scala/collection/SortedMap.scala
@@ -237,8 +218,7 @@
 #./scala-scala/src/library/scala/collection/immutable/IntMap.scala
 
 
-# tailrec bug
-#./scala-scala/src/library/scala/collection/immutable/ListMap.scala
+./scala-scala/src/library/scala/collection/immutable/ListMap.scala
 
 # seems https://github.com/lampepfl/dotty/issues/916
 #./scala-scala/src/library/scala/collection/immutable/ListSet.scala
@@ -248,17 +228,9 @@
 
 ./scala-scala/src/library/scala/collection/immutable/Map.scala
 ./scala-scala/src/library/scala/collection/immutable/MapLike.scala
-
-# https://github.com/lampepfl/dotty/issues/940
-# ./scala-scala/src/library/scala/collection/immutable/MapProxy.scala
-
 ./scala-scala/src/library/scala/collection/immutable/NumericRange.scala
 ./scala-scala/src/library/scala/collection/immutable/Range.scala
-
-
-# tailrec bug
-#./scala-scala/src/library/scala/collection/immutable/RedBlackTree.scala
-
+./scala-scala/src/library/scala/collection/immutable/RedBlackTree.scala
 ./scala-scala/src/library/scala/collection/immutable/Seq.scala
 
 # uses refinements that dotty does not support