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java.lang.VerifyError: class com.restphone.IsList$ overrides final method canEqual. #5171

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scabug opened this issue Nov 9, 2011 · 7 comments
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@scabug scabug commented Nov 9, 2011

Fails in 2.91. Also fails with scala-2.9.2.r25964-b20111108042542.

Get:
[error] (run-main) java.lang.VerifyError: class com.restphone.IsList$ overrides final method canEqual.(Ljava/lang/Object;)Z
java.lang.VerifyError: class com.restphone.IsList$ overrides final method canEqual.(Ljava/lang/Object;)Z
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at com.restphone.TypeBuilder$.extractType$1(TypeBuilder.scala:34)
at com.restphone.TypeBuilder$.innerToList$1(TypeBuilder.scala:46)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
at scala.collection.immutable.List.foreach(List.scala:45)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:200)
at scala.collection.immutable.List.flatMap(List.scala:45)
at com.restphone.TypeBuilder$.getDescendents$1(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$.innerToList$1(TypeBuilder.scala:48)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
at scala.collection.immutable.List.foreach(List.scala:45)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:200)
at scala.collection.immutable.List.flatMap(List.scala:45)
at com.restphone.TypeBuilder$.getDescendents$1(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$.innerToList$1(TypeBuilder.scala:48)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$$anonfun$getDescendents$1$1.apply(TypeBuilder.scala:29)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:200)
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
at scala.collection.immutable.List.foreach(List.scala:45)
at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:200)
at scala.collection.immutable.List.flatMap(List.scala:45)
at com.restphone.TypeBuilder$.getDescendents$1(TypeBuilder.scala:29)
at com.restphone.TypeBuilder$.innerToList$1(TypeBuilder.scala:48)
at com.restphone.TypeBuilder$.toList(TypeBuilder.scala:53)
at com.restphone.TypeBuilder$.doit(TypeBuilder.scala:58)
at com.restphone.ParserApp$delayedInit$body.apply(XmlImportApp.scala:27)
at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main$1.apply(App.scala:60)
at scala.App$$anonfun$main$1.apply(App.scala:60)
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
at scala.collection.immutable.List.foreach(List.scala:45)
at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:30)
at scala.App$class.main(App.scala:60)
at com.restphone.ParserApp$.main(XmlImportApp.scala:5)
at com.restphone.ParserApp.main(XmlImportApp.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
java.lang.RuntimeException: Nonzero exit code: 1
at scala.sys.package$.error(package.scala:27)
at scala.Predef$.error(Predef.scala:66)
[error] {file:/C:/cygwin/home/james/workspace/Deleteme3/}default-867d1f/compile:run: Nonzero exit code: 1
[error] Total time: 10 s, completed Nov 9, 2011 12:05:31 AM

If I rebuild with scala-2.10.0.r25972-b20111109023956 I don't see the problem.

Similar to:
#4931
#5105
#4575
#1055
#1037

But I can't tell if this should be a reopen of one of those or a new issue.

Also similar to this discussion:

https://groups.google.com/forum/#!topic/scala-user/LLBs0ocrMjA

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@scabug scabug commented Nov 9, 2011

Imported From: https://issues.scala-lang.org/browse/SI-5171?orig=1
Reporter: James Moore (james-at-restphone.com)
Affected Versions: 2.9.1
Other Milestones: 2.10.0
Attachments:

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@scabug scabug commented Nov 9, 2011

James Moore (james-at-restphone.com) said:
This is a scratch project. Don't try to make sense of the code. It does repro the problem reliably though, using "sbt run"

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@scabug scabug commented Nov 9, 2011

James Moore (james-at-restphone.com) said:
here's a much smaller repro case:

package com.restphone

abstract sealed class ArgNumber
case object IsList extends ArgNumber
case object ArgNumber

object Testing extends App {
println(IsList)
}

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@scabug scabug commented Nov 24, 2011

@paulp said:
Confirmed present in 2.9.1 and absent in trunk; tagging for 2.9.2.

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@scabug scabug commented Feb 22, 2012

@khernyo said (edited on Feb 22, 2012 9:00:33 PM UTC):
Test case in a1d8029

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@scabug scabug commented Feb 22, 2012

@khernyo said (edited on Feb 22, 2012 9:01:03 PM UTC):
I just realized this might need a fix for 2.9.2, so reopening. Sorry for the noise.

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@scabug scabug commented Dec 8, 2012

@retronym said:
Closing as fixed in 2.10.0.

@scabug scabug closed this Dec 8, 2012
@scabug scabug added the bytecode label Apr 7, 2017
@scabug scabug added this to the 2.10.0-M2 milestone Apr 7, 2017
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