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[error] Options accepted by async:
[error]   allkernel=<bool>                 Only include kernel-mode events.
[error]   alluser=<bool>                   Only include user-mode events.
[error]   ann=<bool>                       Annotate Java method names.
[error]   cstack=<mode>                    How to traverse C stack: Supported: [fp, lbr, no].
[error]   dir=<dir>                        Output directory.
[error]   direction=<direction>            Direction(s) of flame graph. Supported: [forward,
[error]                                    reverse, both]. (default: [both])
[error]   event=<event>                    Event to sample: cpu, alloc, wall, lock, cache-misses,
[error]                                    etc. (default: [cpu])

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➜  compiler-benchmark git:(topic/case-class-o-rama) time (for v in 2.12.11 2.12.12-bin-8d19363-SNAPSHOT; do echo $v; sbt clean 'set scalaVersion in compilation := "'$v'"' 'hot -psource=scalap -prof gc -wi 3 -i 3 -f 2' ; done)
2.12.11
[info] Loading settings for project global-plugins from idea.sbt,dirtymoney.sbt,metals.sbt,gpg.sbt ...
[info] Loading global plugins from /Users/jz/.sbt/1.0/plugins
[info] Loading settings for project compiler-benchmark-build from plugins.sbt,build.sbt ...
[info] Loading project definition from /Users/jz/code/compiler-benchmark/project
[info] Loading settings for project compiler-benchmark from build.sbt ...
[info] Set current project to compiler-benchmark (in build file:/Users/jz/code/compiler-benchmark/)
[success] Total time: 0 s, completed 19/05/2020 10:21:18 AM
[info] Defining compilation / scalaVersion

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SKIP    *   4dd0abeab2 (origin/2.12.x, topic/unrelated-equals-reflexive, 2.12.x) Merge pull request #8980 from mkeskells/2.12.x_Map_++_regression
        |\
        | * ed36c8bbcc (origin/pr/8980) fix regression in Map ++
        | |  .../scala/collection/immutable/HashMap.scala     |  2 +-
        | |  .../scala/collection/immutable/HashMapTest.scala | 26 ++++++++++++++++++++
        | |  2 files changed, 27 insertions(+), 1 deletion(-)
PICK    * |   1c92061d51 Merge pull request #8971 from joroKr21/implicit-by-namme
        |\ \
        | * | eaf1b749fc (origin/pr/8971) [nomerge] Convert implicit by-name error to a type error
        | | |  src/compiler/scala/tools/nsc/ast/parser/Parsers.scala        | 4 ----

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scala> :java -c -private NonStaticLambda
Compiled from "<console>"
public class $line3.$read$$iw$$iw$NonStaticLambda {
  public scala.Function0<$line3.$read$$iw$$iw$NonStaticLambda> test();
    Code:
       0: aload_0
       1: invokedynamic #45,  0             // InvokeDynamic #0:apply:(L$line3/$read$$iw$$iw$NonStaticLambda;)Lscala/Function0;
       6: areturn

  public static final $line3.$read$$iw$$iw$NonStaticLambda $anonfun$test$1($line3.$read$$iw$$iw$NonStaticLambda);

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scala> :java -c -private NonStaticLambda
Compiled from "<console>"
public class $line3.$read$$iw$$iw$NonStaticLambda {
  public scala.Function0<$line3.$read$$iw$$iw$NonStaticLambda> test();
    Code:
       0: aload_0
       1: invokedynamic #45,  0             // InvokeDynamic #0:apply:(L$line3/$read$$iw$$iw$NonStaticLambda;)Lscala/Function0;
       6: areturn

  public static final $line3.$read$$iw$$iw$NonStaticLambda $anonfun$test$1($line3.$read$$iw$$iw$NonStaticLambda);

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scala> val f = new java.io.File("/tmp/test.zip"); val zos = new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(f)); zos.putNextEntry(new java.util.zip.ZipEntry("\u012f" + "/")); zos.closeEntry(); zos.close()
f: java.io.File = /tmp/test.zip
zos: java.util.zip.ZipOutputStream = java.util.zip.ZipOutputStream@6c4e11d0

scala> val zf = new java.util.zip.ZipFile(f); try zf.getEntry("\u012f") finally zf.close()
zf: java.util.zip.ZipFile = java.util.zip.ZipFile@14b0b7f9
res16: java.util.zip.ZipEntry = į/

scala> val zf = new java.util.zip.ZipFile(f); try zf.getEntry("\u012f" + "/") finally zf.close()
zf: java.util.zip.ZipFile = java.util.zip.ZipFile@4700064f

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git -P log -1 && git clean -fdx && java -version && sbt 'packagePlugin' 'runDebuggerTests'
commit 468fc60a3f67f2db22c94c4ad1fcb4b94f6617a5 (HEAD -> topic/clean-slate, retronym/idea201.x, origin/idea201.x, idea201.x)
Author: Justin Kaeser <justin.kaeser@jetbrains.com>
Date:   Tue Apr 7 23:01:48 2020 +0200

    Revert "Not use blocking call in the attachSbtProjectAndRefresh #SCL-17353"

    this fix caused the project view not to show the full project tree until the full import completed

    when BSP import dialog is disabled, the hanging that this change addresses does not happen, so we can revert it

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import scala.concurrent._, duration.Duration, ExecutionContext.Implicits.global
import scala.async.Async.{async, await}
object Test {
  def test: Future[Int] = async { await(f(1)) + await(f(2)) }
  def f(x: Int): Future[Int] = Future.successful(x)
}

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import scala.concurrent._, duration.Duration, ExecutionContext.Implicits.global
import scala.async.Async.{async, await}
object Test {
  def test: Future[Int] = async {
    val x: Option[Either[Object, (String, String)]] = Some(Right(("a", "b")))
    x match {
      case Some(Left(_)) => 1
      case Some(Right(("a", "c"))) => 2
      case Some(Right(("a", "e"))) => 3
      case Some(Right(("a", x))) if "ab".isEmpty => 4

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diff --git a/src/compiler/scala/tools/nsc/transform/async/ExprBuilder.scala b/src/compiler/scala/tools/nsc/transform/async/ExprBuilder.scala
index 4975a4e04f..389ca1637a 100644
--- a/src/compiler/scala/tools/nsc/transform/async/ExprBuilder.scala
+++ b/src/compiler/scala/tools/nsc/transform/async/ExprBuilder.scala
@@ -68,6 +68,17 @@ trait ExprBuilder extends TransformUtils {
       s"AsyncState #$state, next = $nextState"
   }
 
+  final class OpaqueAsyncState(var stats: List[Tree], val state: Int, val nextStates: Array[Int], symLookup: SymLookup)
+    extends AsyncState {