Closed
Description
This came up when adding spire to the community build:
https://github.com/lampepfl/dotty/runs/4071449490?check_suite_focus=true#step:8:9272.
Spire (and this minimization) compiles fine under 3.1.1-RC1 and also on JVM on the nightly.
Compiler version
3.1.2-RC1-bin-20211029-ad5c714-NIGHTLY
Scala.js 1.7.1
Minimized code
package crash
class Foo
trait Companion[A]:
def bar(x: Long = 0): A
object Foo extends Companion[Foo]:
def bar(x: Long = 0): Foo = ???
def crash = Foo.bar()
Output (click arrow to expand)
[info] exception occurred while compiling /workspace/sandbox/src/main/scala/Cmcw5.scala, /workspace/sandbox/src/main/scala/Foo.scala
Failure to disambiguate overloaded reference with
method bar in object Foo: (x: Long): Object and
method bar in object Foo: (x: Long): crash.Foo while compiling /workspace/sandbox/src/main/scala/Cmcw5.scala, /workspace/sandbox/src/main/scala/Foo.scala
[error] ## Exception when compiling 2 sources to /workspace/sandbox/target/scala-3.1.2-RC1-bin-20211029-ad5c714-NIGHTLY/classes
[error] dotty.tools.dotc.core.TypeError: Failure to disambiguate overloaded reference with
[error] method bar in object Foo: (x: Long): Object and
[error] method bar in object Foo: (x: Long): crash.Foo
[error] dotty.tools.dotc.core.Denotations$MultiDenotation.suchThat(Denotations.scala:1244)
[error] dotty.tools.backend.sjs.JSCodeGen$DefaultParamInfo.attachedMethod(JSCodeGen.scala:4709)
[error] dotty.tools.backend.sjs.JSCodeGen.isDefaultParamOfJSNativeDef$1(JSCodeGen.scala:798)
[error] dotty.tools.backend.sjs.JSCodeGen.isExcluded$1(JSCodeGen.scala:806)
[error] dotty.tools.backend.sjs.JSCodeGen.$anonfun$11(JSCodeGen.scala:811)
[error] scala.collection.Iterator$$anon$6.hasNext(Iterator.scala:472)
[error] scala.collection.Iterator$$anon$9.hasNext(Iterator.scala:574)
[error] scala.collection.immutable.List.prependedAll(List.scala:155)
[error] scala.collection.immutable.List$.from(List.scala:684)
[error] scala.collection.immutable.List$.from(List.scala:681)
[error] scala.collection.IterableOps$WithFilter.map(Iterable.scala:884)
[error] dotty.tools.backend.sjs.JSCodeGen.genStaticForwardersFromModuleClass(JSCodeGen.scala:839)
[error] dotty.tools.backend.sjs.JSCodeGen.genStaticForwardersForClassOrInterface(JSCodeGen.scala:763)
[error] dotty.tools.backend.sjs.JSCodeGen.genScalaClass(JSCodeGen.scala:447)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3$$anonfun$1(JSCodeGen.scala:245)
[error] dotty.tools.backend.sjs.ScopedVar$.withScopedVars(ScopedVar.scala:35)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit$$anonfun$3(JSCodeGen.scala:249)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.immutable.List.foreach(List.scala:333)
[error] dotty.tools.backend.sjs.JSCodeGen.genCompilationUnit(JSCodeGen.scala:251)
[error] dotty.tools.backend.sjs.JSCodeGen.run(JSCodeGen.scala:163)
[error] dotty.tools.backend.sjs.GenSJSIR.run(GenSJSIR.scala:15)
[error] dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:308)
[error] scala.collection.immutable.List.map(List.scala:250)
[error] dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:309)
[error] dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:261)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
[error] scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
[error] scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1323)
[error] dotty.tools.dotc.Run.runPhases$1(Run.scala:272)
[error] dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:280)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)
[error] dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:68)
[error] dotty.tools.dotc.Run.compileUnits(Run.scala:289)
[error] dotty.tools.dotc.Run.compileSources(Run.scala:222)
[error] dotty.tools.dotc.Run.compile(Run.scala:206)
[error] dotty.tools.dotc.Driver.doCompile(Driver.scala:39)
[error] dotty.tools.xsbt.CompilerBridgeDriver.run(CompilerBridgeDriver.java:88)
[error] dotty.tools.xsbt.CompilerBridge.run(CompilerBridge.java:22)
[error] sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:91)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$7(MixedAnalyzingCompiler.scala:192)
[error] scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
[error] sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:247)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:182)
[error] sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4$adapted(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:239)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:163)
[error] sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:210)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5(Incremental.scala:175)
[error] sbt.internal.inc.Incremental$.$anonfun$apply$5$adapted(Incremental.scala:173)
[error] sbt.internal.inc.Incremental$$anon$2.run(Incremental.scala:459)
[error] sbt.internal.inc.IncrementalCommon$CycleState.next(IncrementalCommon.scala:116)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:56)
[error] sbt.internal.inc.IncrementalCommon$$anon$1.next(IncrementalCommon.scala:52)
[error] sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:263)
[error] sbt.internal.inc.Incremental$.$anonfun$incrementalCompile$8(Incremental.scala:414)
[error] sbt.internal.inc.Incremental$.withClassfileManager(Incremental.scala:501)
[error] sbt.internal.inc.Incremental$.incrementalCompile(Incremental.scala:401)
[error] sbt.internal.inc.Incremental$.apply(Incremental.scala:167)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:528)
[error] sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:482)
[error] sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:332)
[error] sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:420)
[error] sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:137)
[error] sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:2357)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$2(Defaults.scala:2314)
[error] sbt.internal.io.Retry$.apply(Retry.scala:46)
[error] sbt.internal.io.Retry$.apply(Retry.scala:28)
[error] sbt.internal.io.Retry$.apply(Retry.scala:23)
[error] sbt.internal.server.BspCompileTask$.compute(BspCompileTask.scala:31)
[error] sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:2310)
[error] scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error] sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error] sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error] sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error] sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error] sbt.Execute.work(Execute.scala:291)
[error] sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error] sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error] sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error] java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error] java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error] java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error] java.base/java.lang.Thread.run(Thread.java:833)
[error]
[error] stack trace is suppressed; run last Compile / compileIncremental for the full output
[error] (Compile / compileIncremental) dotty.tools.dotc.core.TypeError: Failure to disambiguate overloaded reference with
[error] method bar in object Foo: (x: Long): Object and
[error] method bar in object Foo: (x: Long): crash.Foo
[error] Total time: 1 s, completed Nov 1, 2021, 8:54:13 PM