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Typo in for expr crashes, = instead of <-, NoPosition is pointless #7473

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scabug opened this issue May 12, 2013 · 2 comments
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Typo in for expr crashes, = instead of <-, NoPosition is pointless #7473

scabug opened this issue May 12, 2013 · 2 comments
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@scabug
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@scabug scabug commented May 12, 2013

Oops, I did it again. Butter fingers!

Instead of crashing, I'd propose a message like, "I'll bring the popcorn!"

apm@mara:~$ skala
Welcome to Scala version 2.11.0-20130422-021742-1d54f26b9a (OpenJDK 64-Bit Server VM, Java 1.7.0_21).
Type in expressions to have them evaluated.
Type :help for more information.

scala> val i = 3
i: Int = 3

scala> val j = 3
j: Int = 3

scala> (for (x = Option(i); if x == j) yield 42) toList
<console>:1: error: '<-' expected but '=' found.
       (for (x = Option(i); if x == j) yield 42) toList
               ^
<console>:1: error: illegal start of simple expression
       (for (x = Option(i); if x == j) yield 42) toList
                          ^
java.lang.UnsupportedOperationException: Position.point on class scala.reflect.internal.util.NoPosition$
	at scala.reflect.internal.util.Position.point(Position.scala:115)
	at scala.reflect.internal.util.Position.startOrPoint(Position.scala:112)
	at scala.tools.nsc.ast.parser.Parsers$Parser.postfixExpr(Parsers.scala:1444)
	at scala.tools.nsc.ast.parser.Parsers$Parser.parseOther$1(Parsers.scala:1339)
	at scala.tools.nsc.ast.parser.Parsers$Parser.expr0(Parsers.scala:1393)
	at scala.tools.nsc.ast.parser.Parsers$Parser.expr(Parsers.scala:1235)

Also in 2.10.1. Is NoPosition the new NoSymbol has no owner?

@scabug
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@scabug scabug commented May 12, 2013

Imported From: https://issues.scala-lang.org/browse/SI-7473?orig=1
Reporter: @som-snytt
Affected Versions: 2.10.1
See #7385

@scabug
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@scabug scabug commented May 23, 2013

@scabug scabug closed this May 30, 2013
@scabug scabug added the quickfix label Apr 7, 2017
@scabug scabug added this to the 2.10.3-RC1 milestone Apr 7, 2017
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