StackOverflowError with many nested classes

Parsing configs with relatively-deep hierarchies results in StackOverflowError using Scala 2.12.8.

// build.sbt
scalaVersion := "2.12.8"
"com.github.pureconfig" %% "pureconfig" % "0.11.0"

// Main.scala
import pureconfig._
import pureconfig.generic.auto._

object Main {
  def main(args: Array[String]): Unit = {
    val app = loadConfigOrThrow[AppConf]
    println(s"app = ${app}")
  }
}

case class AppConf(i: Int, a: A)
case class A(x: B)
case class B(x: C)
case class C(x: D)
case class D(x: E)
case class E(x: F)
case class F(x: G)
case class G(x: H)
case class H(x: Int)

Error message excerpts sbt clean compile:

[info] Compiling 1 Scala source to ...
[error] ## Exception when compiling 1 sources to ...
[error] null
[error] scala.collection.LinearSeqOptimized.contains(LinearSeqOptimized.scala:104)
[error] scala.collection.LinearSeqOptimized.contains$(LinearSeqOptimized.scala:102)
[error] scala.collection.immutable.List.contains(List.scala:89)
[error] scala.reflect.internal.tpe.TypeConstraints$TypeConstraint.addHiBound(TypeConstraints.scala:144)
...
[error] scala.reflect.macros.contexts.Typers.inferImplicitValue(Typers.scala:56)
...
[error] shapeless.LazyMacros$DerivationContext$State$.resolveInstance(lazy.scala:304)
...
[error] java.lang.reflect.Method.invoke(Method.java:498)
...
[error] pureconfig.derivation.MacroCompat.inferImplicitValueCompat(MacroCompat.scala:36)
[error] pureconfig.derivation.MacroCompat.inferImplicitValueCompat$(MacroCompat.scala:27)
[error] pureconfig.DerivationMacros.inferImplicitValueCompat(Derivation.scala:31)
[error] pureconfig.DerivationMacros.materializeDerivation(Derivation.scala:79)
...
[error] scala.tools.nsc.Global$$anon$4.inferImplicitFor(Global.scala:477)
[error]            
[error] java.lang.StackOverflowError
[error] 	at scala.collection.LinearSeqOptimized.contains(LinearSeqOptimized.scala:104)
[error] 	at scala.collection.LinearSeqOptimized.contains$(LinearSeqOptimized.scala:102)
[error] 	at scala.collection.immutable.List.contains(List.scala:89)
...

Note, the above example compiles well using Scala 2.11.

[EugeneYushin]

@jcazevedo thx, it works like a charm. As there were 4 issues opened, it would might have sense to put a notice in docs about this behaviour? I’m closing the issue

[AceHack]

I was building with gradle and finally got it to work with the following options scalaCompileOptions.forkOptions.jvmArgs = [‘-Xss2m’, ‘-XX:-UseGCOverheadLimit’]