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Access widening for the Inliner in SuperAccessors results in private members appearing public on unpickling #6608

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scabug opened this issue Nov 3, 2012 · 5 comments
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@scabug
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scabug commented Nov 3, 2012

Followup to #6562.

Private members will appear as public in the scalap output, and IntelliJ will offer these as autocompletion options.

Test.scala

package sandbox

class C {
  private val x: Any = 1
  @inline def foo = x
}

Scalap output:

package sandbox
class C extends java.lang.Object {
  def this() = { /* compiled code */ }
  val x : scala.Any = { /* compiled code */ }
  @scala.inline
  def foo : scala.Any = { /* compiled code */ }
}

Another fun angle on the problem:

ticket/6562-3 ~/code/scala cat sandbox/test.scala 
package sandbox

class C {
  private val x: Any = 1
  @inline def foo = x
}
ticket/6562-3 ~/code/scala cat sandbox/test_2.scala 
package sandbox

object Test {
  new C().sandbox$C$$x
}
ticket/6562-3 ~/code/scala /Users/jason/usr/scala-v2.10.0-RC1-15-g2c55424/pack/bin/scalac -classpath . -d . sandbox/test.scala  && /Users/jason/usr/scala-v2.10.0-RC1-15-g2c55424/pack/bin/scalac -classpath . -d . sandbox/test_2.scala 
ticket/6562-3 ~/code/scala 
@scabug
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scabug commented Nov 3, 2012

Imported From: https://issues.scala-lang.org/browse/SI-6608?orig=1
Reporter: @retronym
Affected Versions: 2.10.0-RC1

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scabug commented Mar 11, 2013

@retronym said:
scala/scala#2236

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scabug commented Aug 23, 2014

@retronym said:
Here's a related bug that looks to be a consequence of this behaviour:

% tail test/files/run/private-module-accessor-meets-inline/*.scala
==> test/files/run/private-module-accessor-meets-inline/A_1.scala <==
  private case class C()
  // or,       class C(x: Any = 0)

  final class Context {
    @inline final def kaboom(): Unit = {
      C // reference to synthetic companion
        // or, `new C(/*default arg*/)` in the second variant
    }
  }
}

==> test/files/run/private-module-accessor-meets-inline/B_2.scala <==
object Test {
  def main(args: Array[String]): Unit = {
    val analyzer = new Analyzer {}
    val context = new analyzer.Context()
    context.kaboom()
  }
}

% pt --verbose test/files/run/private-module-accessor-meets-inline/
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128M; support was removed in 8.0
Option '--all' not recognized.
Partest version:
Compiler under test: $baseDir/scala-compiler.jar
Scala version is:    Scala compiler version 2.11.2-20140804-175042-ca9f64dfa2 -- Copyright 2002-2013, LAMP/EPFL
Scalac options are:
Compilation Path:    $baseDir/scala-library.jar:$baseDir/scala-reflect.jar:$baseDir/scala-compiler.jar:$baseDir/scalap.jar:$baseDir/scala-actors.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-partest_2.11/1.0.0/scala-partest_2.11-1.0.0.jar:/Users/jason/.m2/repository/org/apache/ant/ant/1.8.4/ant-1.8.4.jar:/Users/jason/.m2/repository/org/apache/ant/ant-launcher/1.8.4/ant-launcher-1.8.4.jar:/Users/jason/.m2/repository/com/googlecode/java-diff-utils/diffutils/1.3.0/diffutils-1.3.0.jar:/Users/jason/.m2/repository/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar:/Users/jason/.m2/repository/org/scalacheck/scalacheck_2.11/1.11.3/scalacheck_2.11-1.11.3.jar:$baseDir/scala-partest-extras.jar:$baseDir/scala-partest-javaagent.jar:$sourceDir/lib/annotations.jar:$sourceDir/lib/enums.jar:$sourceDir/lib/genericNest.jar:$sourceDir/lib/jsoup-1.3.1.jar:$sourceDir/lib/macro210.jar:$sourceDir/lib/methvsfield.jar:$sourceDir/lib/nest.jar:$sourceDir/lib/scalacheck.jar
Java binaries in:    /Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/jre/bin
Java runtime is:     Java HotSpot(TM) 64-Bit Server VM (build 25.0-b66, mixed mode)
Java options are:    -Xmx1024M -Xms64M -XX:MaxPermSize=128M
baseDir:             /Users/jason/code/scala/build/pack/lib
sourceDir:           /Users/jason/code/scala/test/files

Selected 1 tests drawn from specified tests

# starting 1 test in run
% scalac private-module-accessor-meets-inline/A_1.scala
% scalac private-module-accessor-meets-inline/B_2.scala
!! 1 - run/private-module-accessor-meets-inline  [non-zero exit code]
# 0/1 passed, 1 failed in run

##### Transcripts from failed tests #####

# partest /Users/jason/code/scala/test/files/run/private-module-accessor-meets-inline
% scalac private-module-accessor-meets-inline/A_1.scala
% scalac private-module-accessor-meets-inline/B_2.scala
% java \
  -Xmx1024M \
  -Xms64M \
  -XX:MaxPermSize=128M \
  -classpath \
  /Users/jason/code/scala/test/files/run/private-module-accessor-meets-inline-run.obj:/Users/jason/code/scala/build/pack/lib/scala-library.jar:/Users/jason/code/scala/build/pack/lib/scala-reflect.jar:/Users/jason/code/scala/build/pack/lib/scala-compiler.jar:/Users/jason/code/scala/build/pack/lib/scalap.jar:/Users/jason/code/scala/build/pack/lib/scala-actors.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-partest_2.11/1.0.0/scala-partest_2.11-1.0.0.jar:/Users/jason/.m2/repository/org/apache/ant/ant/1.8.4/ant-1.8.4.jar:/Users/jason/.m2/repository/org/apache/ant/ant-launcher/1.8.4/ant-launcher-1.8.4.jar:/Users/jason/.m2/repository/com/googlecode/java-diff-utils/diffutils/1.3.0/diffutils-1.3.0.jar:/Users/jason/.m2/repository/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar:/Users/jason/.m2/repository/org/scala-lang/modules/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar:/Users/jason/.m2/repository/org/scalacheck/scalacheck_2.11/1.11.3/scalacheck_2.11-1.11.3.jar:/Users/jason/code/scala/build/pack/lib/scala-partest-extras.jar:/Users/jason/code/scala/build/pack/lib/scala-partest-javaagent.jar:/Users/jason/code/scala/test/files/lib/annotations.jar:/Users/jason/code/scala/test/files/lib/enums.jar:/Users/jason/code/scala/test/files/lib/genericNest.jar:/Users/jason/code/scala/test/files/lib/jsoup-1.3.1.jar:/Users/jason/code/scala/test/files/lib/macro210.jar:/Users/jason/code/scala/test/files/lib/methvsfield.jar:/Users/jason/code/scala/test/files/lib/nest.jar:/Users/jason/code/scala/test/files/lib/scalacheck.jar \
  -Dfile.encoding=UTF-8 \
  -Djava.library.path=/Users/jason/code/scala/test/files/run \
  -Dpartest.output=/Users/jason/code/scala/test/files/run/private-module-accessor-meets-inline-run.obj \
  -Dpartest.lib=/Users/jason/code/scala/build/pack/lib/scala-library.jar \
  -Dpartest.reflect=/Users/jason/code/scala/build/pack/lib/scala-reflect.jar \
  -Dpartest.cwd=/Users/jason/code/scala/test/files/run \
  -Dpartest.test-path=/Users/jason/code/scala/test/files/run/private-module-accessor-meets-inline \
  -Dpartest.testname=private-module-accessor-meets-inline \
  -Djavacmd=java \
  -Djavaccmd=/Library/Java/JavaVirtualMachines/jdk1.8.0.jdk/Contents/Home/bin/javac \
  -Duser.language=en \
  -Duser.country=US \
  scala.tools.nsc.MainGenericRunner \
  -usejavacp \
  Test \
  jvm > private-module-accessor-meets-inline-run.log
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128M; support was removed in 8.0
java.lang.AbstractMethodError: Test$$anon$1.Analyzer$$C()LAnalyzer$C$;
	at Analyzer$Context.kaboom(A_1.scala:7)
	at Test$.main(B_2.scala:5)
	at Test.main(B_2.scala)
	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:483)
	at scala.reflect.internal.util.ScalaClassLoader$$anonfun$run$1.apply(ScalaClassLoader.scala:68)
	at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
	at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:99)
	at scala.reflect.internal.util.ScalaClassLoader$class.run(ScalaClassLoader.scala:68)
	at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:99)
	at scala.tools.nsc.CommonRunner$class.run(ObjectRunner.scala:22)
	at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:39)
	at scala.tools.nsc.CommonRunner$class.runAndCatch(ObjectRunner.scala:29)
	at scala.tools.nsc.ObjectRunner$.runAndCatch(ObjectRunner.scala:39)
	at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:65)
	at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:87)
	at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
	at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
	at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)


# Failed test paths (this command will update checkfiles)
test/partest --update-check \
  /Users/jason/code/scala/test/files/run/private-module-accessor-meets-inline

0/1 passed, 1 failed (elapsed time: 00:00:03)

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scabug commented Jul 20, 2015

@SethTisue said:
@retronym 2236 was merged, should this ticket be closed?

@scabug
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scabug commented Jul 20, 2015

@retronym said:
AFAICR, yes, I think that is sufficient.

@scabug scabug closed this as completed Jul 20, 2015
@scabug scabug added this to the 2.11.0-M3 milestone Apr 7, 2017
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