error when pickling tree: assertion failed: method $anonfun #15786
Description
Compiler version
Scala compiler version 3.1.3 -- Copyright 2002-2022, LAMP/EPFL
Minimized code
class A(val f: () => Int) { def mA(p: Int = 0): Int = p } trait B { def mB(p1: Int): Unit } class C[T](val f1: B, val f2: T) val f = new A(() => { val x: B = null C[Int](x, 0).f1.mB(1); 1 }).mA()Output
exception occurred while compiling Main.scala java.lang.AssertionError: assertion failed: method $anonfun while compiling Main.scala Exception in thread "main" java.lang.AssertionError: assertion failed: method $anonfun at scala.runtime.Scala3RunTime$.assertFailed(Scala3RunTime.scala:8) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef(TreePickler.scala:324) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:559) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$9$$anonfun$1(TreePickler.scala:468) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$9(TreePickler.scala:468) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$8(TreePickler.scala:468) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:468) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$3$$anonfun$1(TreePickler.scala:427) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$3(TreePickler.scala:427) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$3(TreePickler.scala:428) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:428) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:409) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$3$$anonfun$1(TreePickler.scala:427) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$3(TreePickler.scala:427) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$3(TreePickler.scala:428) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:428) at dotty.tools.dotc.core.tasty.TreePickler.pickleTreeUnlessEmpty(TreePickler.scala:318) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$1(TreePickler.scala:334) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$adapted$1(TreePickler.scala:336) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef(TreePickler.scala:336) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:544) at dotty.tools.dotc.core.tasty.TreePickler.pickleStats$$anonfun$2(TreePickler.scala:359) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickleStats(TreePickler.scala:359) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$26(TreePickler.scala:585) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$24(TreePickler.scala:586) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:586) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$1(TreePickler.scala:331) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef$$anonfun$adapted$1(TreePickler.scala:336) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleDef(TreePickler.scala:336) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:561) at dotty.tools.dotc.core.tasty.TreePickler.pickleStats$$anonfun$2(TreePickler.scala:359) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickleStats(TreePickler.scala:359) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$29(TreePickler.scala:601) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree$$anonfun$adapted$27(TreePickler.scala:601) at scala.Function0.apply$mcV$sp(Function0.scala:39) at dotty.tools.dotc.core.tasty.TreePickler.withLength(TreePickler.scala:55) at dotty.tools.dotc.core.tasty.TreePickler.pickleTree(TreePickler.scala:601) at dotty.tools.dotc.core.tasty.TreePickler.pickle$$anonfun$1(TreePickler.scala:772) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.core.tasty.TreePickler.pickle(TreePickler.scala:772) at dotty.tools.dotc.transform.Pickler.run$$anonfun$1$$anonfun$1(Pickler.scala:72) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.transform.Pickler.run$$anonfun$1(Pickler.scala:109) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.immutable.List.foreach(List.scala:333) at dotty.tools.dotc.transform.Pickler.run(Pickler.scala:109) at dotty.tools.dotc.core.Phases$Phase.runOn$$anonfun$1(Phases.scala:311) at scala.collection.immutable.List.map(List.scala:246) at dotty.tools.dotc.core.Phases$Phase.runOn(Phases.scala:312) at dotty.tools.dotc.transform.Pickler.runOn(Pickler.scala:114) at dotty.tools.dotc.Run.runPhases$1$$anonfun$1(Run.scala:225) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15) at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10) at scala.collection.ArrayOps$.foreach$extension(ArrayOps.scala:1328) at dotty.tools.dotc.Run.runPhases$1(Run.scala:236) at dotty.tools.dotc.Run.compileUnits$$anonfun$1(Run.scala:244) at dotty.tools.dotc.Run.compileUnits$$anonfun$adapted$1(Run.scala:253) at dotty.tools.dotc.util.Stats$.maybeMonitored(Stats.scala:68) at dotty.tools.dotc.Run.compileUnits(Run.scala:253) at dotty.tools.dotc.Run.compileSources(Run.scala:186) at dotty.tools.dotc.Run.compile(Run.scala:170) at dotty.tools.dotc.Driver.doCompile(Driver.scala:35) at dotty.tools.dotc.Driver.process(Driver.scala:195) at dotty.tools.dotc.Driver.process(Driver.scala:163) at dotty.tools.dotc.Driver.process(Driver.scala:175) at dotty.tools.dotc.Driver.main(Driver.scala:205) at dotty.tools.MainGenericCompiler$.run$1(MainGenericCompiler.scala:162) at dotty.tools.MainGenericCompiler$.main(MainGenericCompiler.scala:186) at dotty.tools.MainGenericCompiler.main(MainGenericCompiler.scala)