Runtime error: java.lang.VerifyError: Constructor must call super() or this() before return

[imrafaelmerino]

Compiler version

3.2.0-RC1

It was working on version 3.1.3

Minimized code

package json.value.spec.parser

import java.math.MathContext
import com.github.plokhotnyuk.jsoniter_scala.core.JsonReader
case class DecimalConf(mathContext: MathContext, scaleLimit: Int, digitsLimit: Int)


object DecimalConf extends DecimalConf(MathContext.UNLIMITED, 6178, 308)

link to reproducer

You can download the repo (branch v5.0.0) and execute

sbt compile test

Output (click arrow to expand)

[error] java.lang.VerifyError: Constructor must call super() or this() before return
[error] Exception Details:
[error]   Location:
[error]     json/value/spec/parser/DecimalConf$.<init>()V @0: return
[error]   Reason:
[error]     Error exists in the bytecode
[error]   Bytecode:
[error]     0000000: b1                                     
[error] 
[error]         at json.value.spec.parser.JsObjParser$.<clinit>(Parser.scala:130)
[error]         at json.value.JsObj$.<clinit>(JsValue.scala:789)
[error]         at json.value.gen.JsObjGen$.apply(JsObjGen.scala:26)
[error]         at tests.JsObjSpecProperties$.<clinit>(JsObjSpecProperties.scala:21)
[error]         at java.base/java.lang.Class.forName0(Native Method)
[error]         at java.base/java.lang.Class.forName(Class.java:467)
[error]         at org.scalacheck.Platform$.loadModule(Platform.scala:69)
[error]         at org.scalacheck.ScalaCheckRunner$BaseTask.<init>(ScalaCheckFramework.scala:55)
[error]         at org.scalacheck.ScalaCheckRunner$$anon$2.<init>(ScalaCheckFramework.scala:93)
[error]         at org.scalacheck.ScalaCheckRunner.rootTask(ScalaCheckFramework.scala:93)
[error]         at org.scalacheck.ScalaCheckRunner.$anonfun$tasks$2(ScalaCheckFramework.scala:44)
[error]         at scala.collection.ArrayOps$.map$extension(ArrayOps.scala:929)
[error]         at org.scalacheck.ScalaCheckRunner.tasks(ScalaCheckFramework.scala:44)
[error]         at sbt.TestRunner.tasks(TestFramework.scala:114)
[error]         at sbt.TestFramework$.$anonfun$createTestTasks$4(TestFramework.scala:275)
[error]         at sbt.TestFramework$.sbt$TestFramework$$withContextLoader(TestFramework.scala:289)
[error]         at sbt.TestFramework$.$anonfun$createTestTasks$3(TestFramework.scala:275)
[error]         at sbt.TestFramework$.$anonfun$createTestTasks$3$adapted(TestFramework.scala:272)
[error]         at scala.collection.TraversableLike.$anonfun$flatMap$1(TraversableLike.scala:293)
[error]         at scala.collection.Iterator.foreach(Iterator.scala:943)
[error]         at scala.collection.Iterator.foreach$(Iterator.scala:943)
[error]         at scala.collection.AbstractIterator.foreach(Iterator.scala:1431)
[error]         at scala.collection.IterableLike.foreach(IterableLike.scala:74)
[error]         at scala.collection.IterableLike.foreach$(IterableLike.scala:73)
[error]         at scala.collection.AbstractIterable.foreach(Iterable.scala:56)
[error]         at scala.collection.TraversableLike.flatMap(TraversableLike.scala:293)
[error]         at scala.collection.TraversableLike.flatMap$(TraversableLike.scala:290)
[error]         at scala.collection.AbstractTraversable.flatMap(Traversable.scala:108)
[error]         at sbt.TestFramework$.createTestTasks(TestFramework.scala:272)
[error]         at sbt.TestFramework$.testTasks(TestFramework.scala:225)
[error]         at sbt.Tests$.testTask(Tests.scala:357)
[error]         at sbt.Tests$.apply(Tests.scala:324)
[error]         at sbt.Defaults$.$anonfun$allTestGroupsTask$6(Defaults.scala:1572)
[error]         at scala.collection.immutable.List.map(List.scala:293)
[error]         at sbt.Defaults$.allTestGroupsTask(Defaults.scala:1547)
[error]         at sbt.Defaults$.$anonfun$testTasks$10(Defaults.scala:1253)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)
[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:68)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:282)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:23)
[error]         at sbt.Execute.work(Execute.scala:291)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:282)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:265)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:64)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
[error]         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
[error]         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
[error]         at java.base/java.lang.Thread.run(Thread.java:833)

[sergewar]

Can this bug have the same root cause as https://github.com/scoverage/sbt-scoverage/issues/450 ?

[imrafaelmerino]

it seems you are right, I just removed the plugin and it's working fine...

[ckipp01]

To clarify a bit, you can also reproduce this without using sbt-scoverage. In your example repo just remove sbt-scoverage, add -coverage-out:foo to your scalacOptions and run test. You'll get the same issue. Just wanted to show that this isn't due to the integration or to scoverage, but rather the instrumentation here.

[imrafaelmerino]

@ckipp01 you are right, just did as you say and the same error happens without including the sbt-scoverage plugin

[sergewar]

Also confirm that on my project have this error with option -coverage-out:foo