Problem with pickling/unpickling of complex traits and type parameters

scabug commented 16 years ago

Hello,

Using lift 0.7-SNAPSHOT, if I override the definition of Menu I get a "malformed Scala signature of MenuItem" runtime exception.

I have attached an archive of the project with the issue. To recreate it, expand the tar and run "mvn install"

If you do not include the file "src/main/scala/com/tyler/fb/snippet/Menu.scala" no exception appears.

This is my first report, so please, if you need more let me know.

Thanks

Here is my scala version and stack trace is at the end:

~/src/_sandbox/fb
$$ scala -version
Scala code runner version 2.7.0.r14476-b20080402080027 -- (c) 2002-2008 LAMP/EPFL

~/src/_sandbox/fb
$$ mvn install[[BR]]
[INFO] Scanning for projects...
[INFO] ----------------------------------------------------------------------------
[INFO] Building fb
[INFO]    task-segment: [clean, install]
[INFO] ----------------------------------------------------------------------------
[INFO] artifact net.sf.alchim:yuicompressor-maven-plugin: checking for updates from scala-tools.org
[INFO] [clean:clean]
[INFO] Deleting directory /Users/tjweir/src/_sandbox/fb/target
[INFO] [resources:resources]
[INFO] Using default encoding to copy filtered resources.
[INFO] [yuicompressor:compress {execution: default}]
[INFO] nb warnings: 0, nb errors: 0
[INFO] [compiler:compile]
[INFO] Nothing to compile - all classes are up to date
[INFO] [scala:compile {execution: default}]
[INFO] Compiling 5 source files to /Users/tjweir/src/_sandbox/fb/target/classes
[WARNING] Exception in thread "main" java.lang.RuntimeException: malformed Scala signature of MenuItem at 2891; reference type T of package sitemap refers to nonexisting symbol.
[WARNING]   at scala.tools.nsc.symtab.classfile.UnPickler$$UnPickle.errorBadSignature(UnPickler.scala:755)
[WARNING]   at scala.tools.nsc.symtab.classfile.UnPickler$$UnPickle.scala$$tools$$nsc$$symtab$$classfile$$UnPickler$$UnPickle$$$$readSymbol(UnPickler.scala:172)
[WARNING]   at scala.tools.nsc.symtab.classfile.UnPickler$$UnPickle$$$$anonfun$$scala$$tools$$nsc$$symtab$$classfile$$UnPickler$$UnPickle$$$$readSymbolRef$$1.apply(UnPickler.scala:707)
[WARNING]   at scala.tools.nsc.symtab.classfile.UnPickler$$UnPickle$$$$anonfun$$scala$$tools$$nsc$$symtab$$classfile$$UnPickler$$UnPickle$$$$readSymbolRef$$1.apply(UnPickler.scala:707)
[WARNING]   at scala.tools.nsc.symtab.classfile.UnPickler$$UnPickle.scala$$tools$$nsc$$symtab$$classfile$$UnPickler$$UnPickle$$$$at(UnPickler.scala:139)

scabug commented 16 years ago

Imported From: https://issues.scala-lang.org/browse/SI-715?orig=1 Reporter: Tyler Weir (tjweir) Attachments:

fb.tar (created on Apr 2, 2008 3:54:14 PM UTC, 51200 bytes)
meredith.scala (created on Mar 5, 2009 1:48:50 PM UTC, 2124 bytes)

scabug commented 16 years ago

@lrytz said: Hi!

We don't have the resources to analyze whole projects. What we need is a small example, a single Scala object, which lets us more easily reproduce and analyze the problem.

scabug commented 16 years ago

David Pollak (dpp) said: This is a persistent problem. There is a problem with the Byte Pickler. I see this problem over and over. Yes, it's a hassle to download lift and reproduce the issue, but there is a problem with the way the types are stored in classes. Please continue to investigate.

scabug commented 16 years ago

@odersky said: I believe #715 and #1122 are duplicates. Since #1122 is fixed in r15700, this one is presumed fixed also. Let me know if you find out this is not the case.

scabug commented 16 years ago

Tyler Weir (tjweir) said: Thanks Martin, I'll test with a nightly when r15700 is rolled in.