valueOf wildcard type crashes

[Atry]

minimized code

object Test extends App {
  valueOf[_]
}

Stack trace

java.nio.file.NoSuchFileException: /drone/src/library/src/dotty/DottyPredef.scala
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
	at java.nio.file.Files.newInputStream(Files.java:152)
	at dotty.tools.io.File.inputStream(File.scala:51)
	at dotty.tools.io.PlainFile.input(PlainFile.scala:44)
	at dotty.tools.io.AbstractFile.toByteArray(AbstractFile.scala:170)
	at dotty.tools.dotc.util.SourceFile.SourceFile$superArg$1$$anonfun$1(SourceFile.scala:51)
	at dotty.tools.dotc.util.SourceFile.content(SourceFile.scala:47)
	at dotty.tools.dotc.util.SourceFile.lineIndices(SourceFile.scala:110)
	at dotty.tools.dotc.util.SourceFile.offsetToLine(SourceFile.scala:129)
	at dotty.tools.dotc.util.SourcePosition.line(SourcePosition.scala:25)
	at xsbt.DelegatingReporter$2.line(DelegatingReporter.java:91)
	at com.olegych.scastie.sbtscastie.CompilerReporter$$anon$1.toApi$1(CompilerReporter.scala:43)
	at com.olegych.scastie.sbtscastie.CompilerReporter$$anon$1.$anonfun$printSummary$2(CompilerReporter.scala:46)
	at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:238)
	at scala.collection.IndexedSeqOptimized.foreach(IndexedSeqOptimized.scala:36)
	at scala.collection.IndexedSeqOptimized.foreach$(IndexedSeqOptimized.scala:33)
	at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:198)
	at scala.collection.TraversableLike.map(TraversableLike.scala:238)
	at scala.collection.TraversableLike.map$(TraversableLike.scala:231)
	at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:198)
	at com.olegych.scastie.sbtscastie.CompilerReporter$$anon$1.printSummary(CompilerReporter.scala:46)
	at xsbt.DelegatingReporter.printSummary(DelegatingReporter.java:58)
	at dotty.tools.dotc.Run.printSummary(Run.scala:258)
	at dotty.tools.dotc.Driver.finish$1(Driver.scala:39)
	at dotty.tools.dotc.Driver.doCompile(Driver.scala:49)
	at dotty.tools.dotc.Driver.process(Driver.scala:189)
	at dotty.tools.dotc.Main.process(Main.scala)
	at xsbt.CachedCompilerImpl.run(CachedCompilerImpl.java:69)
	at xsbt.CompilerInterface.run(CompilerInterface.java:41)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sbt.internal.inc.AnalyzingCompiler.call(AnalyzingCompiler.scala:248)
	at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:122)
	at sbt.internal.inc.AnalyzingCompiler.compile(AnalyzingCompiler.scala:95)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$4(MixedAnalyzingCompiler.scala:91)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
	at sbt.internal.inc.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:186)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$3(MixedAnalyzingCompiler.scala:82)
	at sbt.internal.inc.MixedAnalyzingCompiler.$anonfun$compile$3$adapted(MixedAnalyzingCompiler.scala:77)
	at sbt.internal.inc.JarUtils$.withPreviousJar(JarUtils.scala:215)
	at sbt.internal.inc.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:77)
	at sbt.internal.inc.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:146)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1(IncrementalCompilerImpl.scala:343)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileInternal$1$adapted(IncrementalCompilerImpl.scala:343)
	at sbt.internal.inc.Incremental$.doCompile(Incremental.scala:120)
	at sbt.internal.inc.Incremental$.$anonfun$compile$4(Incremental.scala:100)
	at sbt.internal.inc.IncrementalCommon.recompileClasses(IncrementalCommon.scala:180)
	at sbt.internal.inc.IncrementalCommon.cycle(IncrementalCommon.scala:98)
	at sbt.internal.inc.Incremental$.$anonfun$compile$3(Incremental.scala:102)
	at sbt.internal.inc.Incremental$.manageClassfiles(Incremental.scala:155)
	at sbt.internal.inc.Incremental$.compile(Incremental.scala:92)
	at sbt.internal.inc.IncrementalCompile$.apply(Compile.scala:75)
	at sbt.internal.inc.IncrementalCompilerImpl.compileInternal(IncrementalCompilerImpl.scala:348)
	at sbt.internal.inc.IncrementalCompilerImpl.$anonfun$compileIncrementally$1(IncrementalCompilerImpl.scala:301)
	at sbt.internal.inc.IncrementalCompilerImpl.handleCompilationError(IncrementalCompilerImpl.scala:168)
	at sbt.internal.inc.IncrementalCompilerImpl.compileIncrementally(IncrementalCompilerImpl.scala:248)
	at sbt.internal.inc.IncrementalCompilerImpl.compile(IncrementalCompilerImpl.scala:74)
	at sbt.Defaults$.compileIncrementalTaskImpl(Defaults.scala:1761)
	at sbt.Defaults$.$anonfun$compileIncrementalTask$1(Defaults.scala:1734)
	at scala.Function1.$anonfun$compose$1(Function1.scala:49)
	at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
	at sbt.std.Transform$$anon$4.work(Transform.scala:67)
	at sbt.Execute.$anonfun$submit$2(Execute.scala:281)
	at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
	at sbt.Execute.work(Execute.scala:290)
	at sbt.Execute.$anonfun$submit$1(Execute.scala:281)
	at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
	at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

[MaximeKjaer]

I think we can close this as a duplicate of #7442.

The expected behavior here is that a compilation error should be produced, since no singleton value can be produced by valueOf for a wildcard type. This is indeed what happens if I compile your minimized code example with dotc:

-- [E035] Syntax Error: tests/playground/i7866.scala:2:10 ----------------------
2 |  valueOf[_]
  |          ^
  |          Unbound wildcard type

longer explanation available when compiling with `-explain`
-- Error: tests/playground/i7866.scala:2:9 -------------------------------------
2 |  valueOf[_]
  |  ^^^^^^^^^^
  |  cannot reduce summonFrom with
  |   patterns :  case ev @ _:ValueOf[Any]
  | This location contains code that was inlined from DottyPredef.scala:36
2 errors found

However, compiling with sbt gives a NoSuchFileException instead, which is a bug that is being tracked in #7442.