Data race in typer: seems due to presence of DottyPredef both on class path and in compiled source.

[error] Test dotc.tests.dotty failed: java.lang.AssertionError: assertion failed: data race? overwriting symbol of dotty.DottyPredef$ / TypeRef(ThisType(TypeRef(NoPrefix,dotty)),DottyPredef$) / class dotty.tools.dotc.core.Types$CachedTypeRef / 9007 / 9748, took 1.276 sec
[error]     at scala.Predef$.assert(Predef.scala:165)
[error]     at dotty.tools.dotc.core.Types$NamedType.checkSymAssign(Types.scala:1263)
[error]     at dotty.tools.dotc.core.Types$NamedType.setDenot(Types.scala:1293)
[error]     at dotty.tools.dotc.core.Types$NamedType.withDenot(Types.scala:1286)
[error]     at dotty.tools.dotc.core.Types$TypeRef$.apply(Types.scala:1669)
[error]     at dotty.tools.dotc.core.Types$Type.select(Types.scala:819)
[error]     at dotty.tools.dotc.typer.Namer.moduleValSig(Namer.scala:602)
[error]     at dotty.tools.dotc.typer.Namer$Completer.typeSig(Namer.scala:465)
[error]     at dotty.tools.dotc.typer.Namer$Completer.completeInCreationContext(Namer.scala:499)
[error]     at dotty.tools.dotc.typer.Namer$Completer.complete(Namer.scala:495)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.completeFrom(SymDenotations.scala:161)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.info(SymDenotations.scala:143)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.ensureCompleted(SymDenotations.scala:253)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.flags(SymDenotations.scala:97)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.is(SymDenotations.scala:119)
[error]     at dotty.tools.dotc.core.SymDenotations$SymDenotation.isStable(SymDenotations.scala:464)
[error]     at dotty.tools.dotc.core.Types$Type.widenIfUnstable(Types.scala:691)
[error]     at dotty.tools.dotc.core.Types$Type$$anonfun$member$1.apply(Types.scala:394)
[error]     at dotty.tools.dotc.core.Types$Type$$anonfun$member$1.apply(Types.scala:394)
[error]     at dotty.tools.dotc.util.Stats$.track(Stats.scala:35)
[error]     at dotty.tools.dotc.core.Types$Type.member(Types.scala:393)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedIdent$1.wildImportRef$1(Typer.scala:192)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedIdent$1.findRef$1(Typer.scala:240)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedIdent$1.apply(Typer.scala:263)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedIdent$1.apply(Typer.scala:79)
[error]     at dotty.tools.dotc.util.Stats$.track(Stats.scala:35)
[error]     at dotty.tools.dotc.typer.Typer.typedIdent(Typer.scala:79)
[error]     at dotty.tools.dotc.typer.Typer.typedNamed$1(Typer.scala:1017)
[error]     at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:1076)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typed$2.apply(Typer.scala:1088)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typed$2.apply(Typer.scala:1086)
[error]     at dotty.tools.dotc.reporting.Reporting$class.traceIndented(Reporter.scala:147)
[error]     at dotty.tools.dotc.core.Contexts$Context.traceIndented(Contexts.scala:51)
[error]     at dotty.tools.dotc.typer.Typer.typed(Typer.scala:1086)
[error]     at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:1125)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedPackageDef$1.apply(Typer.scala:961)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typedPackageDef$1.apply(Typer.scala:960)
[error]     at dotty.tools.dotc.util.Stats$.track(Stats.scala:35)
[error]     at dotty.tools.dotc.typer.Typer.typedPackageDef(Typer.scala:960)
[error]     at dotty.tools.dotc.typer.Typer.typedUnnamed$1(Typer.scala:1066)
[error]     at dotty.tools.dotc.typer.Typer.typedUnadapted(Typer.scala:1078)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typed$2.apply(Typer.scala:1088)
[error]     at dotty.tools.dotc.typer.Typer$$anonfun$typed$2.apply(Typer.scala:1086)
[error]     at dotty.tools.dotc.reporting.Reporting$class.traceIndented(Reporter.scala:147)
[error]     at dotty.tools.dotc.core.Contexts$Context.traceIndented(Contexts.scala:51)
[error]     at dotty.tools.dotc.typer.Typer.typed(Typer.scala:1086)
[error]     at dotty.tools.dotc.typer.Typer.typedExpr(Typer.scala:1125)
[error]     at dotty.tools.dotc.typer.FrontEnd$$anonfun$typeCheck$1.apply$mcV$sp(FrontEnd.scala:41)
[error]     at dotty.tools.dotc.typer.FrontEnd.monitor(FrontEnd.scala:18)
[error]     at dotty.tools.dotc.typer.FrontEnd.typeCheck(FrontEnd.scala:39)
[error]     at dotty.tools.dotc.typer.FrontEnd$$anonfun$runOn$3.apply(FrontEnd.scala:52)
[error]     at dotty.tools.dotc.typer.FrontEnd$$anonfun$runOn$3.apply(FrontEnd.scala:52)
[error]     at scala.collection.immutable.List.foreach(List.scala:381)
[error]     at dotty.tools.dotc.typer.FrontEnd.runOn(FrontEnd.scala:52)
[error]     at dotty.tools.dotc.Run$$anonfun$compileSources$1$$anonfun$apply$mcV$sp$3.apply(Run.scala:55)
[error]     at dotty.tools.dotc.Run$$anonfun$compileSources$1$$anonfun$apply$mcV$sp$3.apply(Run.scala:52)
[error]     at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
[error]     at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
[error]     at dotty.tools.dotc.Run$$anonfun$compileSources$1.apply$mcV$sp(Run.scala:52)
[error]     at dotty.tools.dotc.Run$$anonfun$compileSources$1.apply(Run.scala:47)
[error]     at dotty.tools.dotc.Run$$anonfun$compileSources$1.apply(Run.scala:47)
[error]     at dotty.tools.dotc.util.Stats$.monitorHeartBeat(Stats.scala:68)
[error]     at dotty.tools.dotc.Run.compileSources(Run.scala:46)
[error]     at dotty.tools.dotc.Run.compile(Run.scala:33)
[error]     at dotty.tools.dotc.Driver.doCompile(Driver.scala:20)
[error]     at dotty.tools.dotc.Bench$.dotty$tools$dotc$Bench$$super$doCompile(Bench.scala:38)
[error]     at dotty.tools.dotc.Bench$$anonfun$doCompile$1.apply(Bench.scala:38)
[error]     at dotty.tools.dotc.Bench$$anonfun$doCompile$1.apply(Bench.scala:36)
[error]     at dotty.tools.dotc.Bench$$anonfun$ntimes$1.apply(Bench.scala:30)
[error]     at dotty.tools.dotc.Bench$$anonfun$ntimes$1.apply(Bench.scala:30)
[error]     at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:142)
[error]     at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:142)
[error]     at scala.collection.immutable.Range.foreach(Range.scala:166)
[error]     at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:142)
[error]     at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:104)
[error]     at scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:136)
[error]     at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:104)
[error]     at dotty.tools.dotc.Bench$.ntimes(Bench.scala:30)
[error]     at dotty.tools.dotc.Bench$.doCompile(Bench.scala:36)
[error]     at dotty.tools.dotc.Driver.process(Driver.scala:31)
[error]     at dotty.tools.dotc.Bench$.dotty$tools$dotc$Bench$$super$process(Bench.scala:53)
[error]     at dotty.tools.dotc.Bench$$anonfun$process$1.apply(Bench.scala:53)
[error]     at dotty.tools.dotc.Bench$$anonfun$process$1.apply(Bench.scala:53)
[error]     at dotty.tools.dotc.Bench$$anonfun$ntimes$1.apply(Bench.scala:30)
[error]     at dotty.tools.dotc.Bench$$anonfun$ntimes$1.apply(Bench.scala:30)
[error]     at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:142)
[error]     at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:142)
[error]     at scala.collection.immutable.Range.foreach(Range.scala:166)
[error]     at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:142)
[error]     at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:104)
[error]     at scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:136)
[error]     at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:104)
[error]     at dotty.tools.dotc.Bench$.ntimes(Bench.scala:30)
[error]     at dotty.tools.dotc.Bench$.process(Bench.scala:53)
[error]     at test.CompilerTest.compileArgs(CompilerTest.scala:159)
[error]     at test.CompilerTest.compileDir(CompilerTest.scala:104)
[error]     at dotc.tests.dotty(tests.scala:141)

1 files changed, 4 insertions, 3 deletions

diff --git a/test/dotc/tests.scala b/test/dotc/tests.scala
index 4dc3c70d6..753a3a6c4 100644
--- a/test/dotc/tests.scala
+++ b/test/dotc/tests.scala
@@ -42,6 +42,7 @@ class tests extends CompilerTest {
   val toolsDir  = dottyDir + "tools/"
   val dotcDir   = toolsDir + "dotc/"
   val coreDir   = dotcDir + "core/"
+/*
   @Test def pickle_pickleOK = compileDir(testsDir, "pickling", testPickling)
   @Test def pickle_pickling = compileDir(coreDir, "pickling", testPickling)
   @Test def pickle_ast = compileDir(dotcDir, "ast", testPickling)
@@ -134,9 +135,9 @@ class tests extends CompilerTest {
   @Test def neg_escapingRefs = compileFile(negDir, "escapingRefs", xerrors = 2)
   @Test def neg_instantiateAbstract = compileFile(negDir, "instantiateAbstract", xerrors = 8)
   @Test def neg_selfInheritance = compileFile(negDir, "selfInheritance", xerrors = 5)
-
-
+*/
   @Test def dotty = compileDir(sourceDir, "", "-deep" :: allowDeepSubtypes ++ twice) // note the -deep argument
+/*
   @Test def dotc_ast = compileDir(dotcDir, "ast")
   @Test def dotc_config = compileDir(dotcDir, "config")
   @Test def dotc_core = compileDir(dotcDir, "core")("-Yno-double-bindings" :: allowDeepSubtypes)// twice omitted to make tests run faster
@@ -177,6 +178,6 @@ class tests extends CompilerTest {
     ), List(/* "-Ylog:frontend", */ "-Xprompt") ++ staleSymbolError ++ twice)
 
   val javaDir = "./tests/pos/java-interop/"
-  @Test def java_all = compileFiles(javaDir, twice)
+  @Test def java_all = compileFiles(javaDir, twice)*/
   //@Test def dotc_compilercommand = compileFile(dotcDir + "config/", "CompilerCommand")
 }