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Type alias for tuple > 22 crashes compiler #9340

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scabug opened this issue Jun 2, 2015 · 2 comments
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Type alias for tuple > 22 crashes compiler #9340

scabug opened this issue Jun 2, 2015 · 2 comments
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@szeiger
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2.11.8

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@scabug
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scabug commented Jun 2, 2015

Compiling a file with type = (tuple with more than 22 fields) causes the compiler to crash. I've attached a simple scalatest test.

Here is top of the stack trace:
java.lang.AssertionError: assertion failed: scala.
at scala.reflect.internal.Trees$AppliedTypeTree.(Trees.scala:579)
at scala.reflect.internal.TreeGen.mkTupleType(TreeGen.scala:293)
at scala.tools.nsc.ast.parser.TreeBuilder.makeTupleType(TreeBuilder.scala:44)
at scala.tools.nsc.ast.parser.Parsers$Parser$PatternContextSensitive$class.scala$tools$nsc$ast$parser$Parsers$Parser$PatternContextSensitive$$tupleInfixType(Parsers.scala:873)
at scala.tools.nsc.ast.parser.Parsers$Parser$PatternContextSensitive$$anonfun$typ$1.apply(Parsers.scala:906)
at scala.tools.nsc.ast.parser.Parsers$Parser$PatternContextSensitive$$anonfun$typ$1.apply(Parsers.scala:903)
at scala.tools.nsc.ast.parser.Parsers$Parser.placeholderTypeBoundary(Parsers.scala:485)
at scala.tools.nsc.ast.parser.Parsers$Parser$PatternContextSensitive$class.typ(Parsers.scala:903)
at scala.tools.nsc.ast.parser.Parsers$Parser$outPattern$.typ(Parsers.scala:1993)
at scala.tools.nsc.ast.parser.Parsers$Parser.typ(Parsers.scala:2013)
at scala.tools.nsc.ast.parser.Parsers$Parser.typeDefOrDcl(Parsers.scala:2679)
at scala.tools.nsc.ast.parser.Parsers$Parser.defOrDcl(Parsers.scala:2463)
at scala.tools.nsc.ast.parser.Parsers$Parser.nonLocalDefOrDcl(Parsers.scala:2473)
at scala.tools.nsc.ast.parser.Parsers$Parser$$anonfun$templateStat$1$$anonfun$applyOrElse$3.apply(Parsers.scala:3030)
at scala.tools.nsc.ast.parser.Parsers$Parser$$anonfun$templateStat$1$$anonfun$applyOrElse$3.apply(Parsers.scala:3030)
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scabug commented Jun 2, 2015

Imported From: https://issues.scala-lang.org/browse/SI-9340?orig=1
Reporter: Joe F (fullness)
Affected Versions: 2.11.6
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scabug commented Apr 7, 2016

@szeiger said:
This was fixed by scala/scala#4927:

$ ../scala/build/quick/bin/scalac BigTupleSpec.scala
BigTupleSpec.scala:7: error: too many elements for tuple: 23, allowed: 22
  type Big = (
             ^
BigTupleSpec.scala:17: error: too many elements for tuple: 23, allowed: 22
      val foo: Big = (
                     ^
two errors found

@scabug scabug closed this as completed Apr 7, 2016
@scabug scabug added this to the 2.11.8 milestone Apr 7, 2017
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