internal compiler error when matching Text to NodeSeq

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When trying to match a NodeSeq with a Text element case the following internal compiler error is thrown:

Exception in thread "main" scala.tools.nsc.symtab.Types$$TypeError: too many arguments for method body%2: ()java.lang.Object

Example source and full debug compiler output are attached.

This code worked fine in 2.7.7 but causes an internal compiler error in 2.8.0.r20397-b20100107020241 and 2.8.0.r20423-b20100109020145. There are potentially problems with the approach taken in the example code so it's possible it should still throw a compile error, but never an internal compiler error.

Removing the Text case or changing the code to iterate over the NodeSeq and match each individual node (as in the commented out section) allows the code to compile fine.

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Imported From: https://issues.scala-lang.org/browse/SI-2883?orig=1
Reporter: James McCalden (jmccalden)
Attachments:

• CompilerOutput.txt (created on Jan 10, 2010 1:37:58 AM UTC, 74906 bytes)
• Main.scala (created on Jan 10, 2010 1:33:54 AM UTC, 1351 bytes)

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James McCalden (jmccalden) said:
Example code

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James McCalden (jmccalden) said:
Compiler output with logging="debug"

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@retronym said:
Probably a duplicate of #2310

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James McCalden (jmccalden) said:
I did wonder about that, but given the work arounds (which are to just stop trying to match a Text against a NodeSeq) I thought it might be more specific to the scala.xml classes. No way to be sure without knowing more about how match works.

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@lindydonna said:
Paul, can you confirm if this is a duplicate of SI-2310?

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@paulp said:
It isn't actually, except in the broadest sense that extractors are super buggy. Fixed in r20450.