Aladdin - Scala Bugtracking
[#1002] project: interpreter priority: medium category: bug
submitter assigned to status date submitted
Nikolay Lex fixed 2007-03-14 10:50:08.0
subject [contrib #375] unclosed xml literals interpreter crash
code 
<x
what happened 
Interpreter crash, seemingly similar to the other interpreter issues in 2.4.0-RC1:


Exception in thread "main" java.util.NoSuchElementException: stack empty
        at scala.collection.mutable.Stack.top(Stack.scala:67)
        at scala.tools.nsc.ast.parser.MarkupParsers$MarkupParser.xLiteral(MarkupParsers.scala:541)
        at scala.tools.nsc.ast.parser.Parsers$Parser.simpleExpr(Parsers.scala:1031)
        at scala.tools.nsc.ast.parser.Parsers$Parser.prefixExpr(Parsers.scala:1008)
        at scala.tools.nsc.ast.parser.Parsers$Parser.postfixExpr(Parsers.scala:961)
        at scala.tools.nsc.ast.parser.Parsers$Parser.expr(Parsers.scala:908)
        at scala.tools.nsc.ast.parser.Parsers$Parser.templateStatSeq(Parsers.scala:2145)
        at scala.tools.nsc.Interpreter$$anonfun$5.simpleParse$0(Interpreter.scala:187)
        at scala.tools.nsc.Interpreter$$anonfun$5.apply(Interpreter.scala:192)
        at scala.tools.nsc.Interpreter$$anonfun$5.apply(Interpreter.scala:181)
        at scala.tools.nsc.reporters.Reporter.withIncompleteHandler(Reporter.scala:62)
        at scala.tools.nsc.Interpreter.scala$tools$nsc$Interpreter$$parse(Interpreter.scala:181)
        at scala.tools.nsc.Interpreter.interpret(Interpreter.scala:270)
        at scala.tools.nsc.InterpreterLoop.interpretStartingWith(InterpreterLoop.scala:211)
        at scala.tools.nsc.InterpreterLoop.command(InterpreterLoop.scala:198)
        at scala.tools.nsc.InterpreterLoop.repl(InterpreterLoop.scala:111)
        at scala.tools.nsc.InterpreterLoop.main(InterpreterLoop.scala:246)
        at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:92)
        at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
what expected Error, but no crash.
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Changes of this bug report
Nikolay  edited on  2007-03-14 10:50:47.0
contribution #375. Assigned to Lex because it crashes only the interpreter
Lex  edited on  2007-03-16 13:07:51.0
I have made one tweak that hopefully helps: CharArrayreader returns endless SU's at EOF. However, the next problem is within the XML parsing somewhere, where there is an infinite loop. Try test/pending/run/bug1006.scala, which I just commited.
Lex  edited on  2007-03-16 13:08:19.0
Err, I mean, check test/pending/neg/badtok-3.scala
Martin  edited on  2007-04-17 16:33:47.0
reassigned to lex and raised to medium.
Lex  edited on  2007-07-13 23:25:30.0
This problem is now fixed. The interpreter now correctly waits for more input to complete the XML literal.