660210 - Vector indexing is inconsistent with "in"

Status: RESOLVED WONTFIX

(Tamarin Graveyard :: Virtual Machine, defect)

Description

[Lars T Hansen]

Adam observes:

  Vector.<String>.prototype[2] = "blah";
  var v:Vector.<String> = new Vector.<String>(1);

  trace (2 in v);           // prints "false"
  trace ("2" in v);         // prints "true"
  trace(v["2"]);            // throws RangeError
  trace(v[2]);              // throws RangeErrror

The bug here is that "2" in v prints true: the "in" operator looks through the restrictions on indexing expressions (all numbers are absorbed by the Vector); it should not.

Comment 1

[Felix S. Klock II [:pnkfelix, :fklock]]

Was this was injected (e.g. by my in-operator changes) or has it been this way since Vector was introduced?

Comment 2

[Lars T Hansen]

(In reply to comment #1)
> Was this was injected (e.g. by my in-operator changes) or has it been this
> way since Vector was introduced?

I have no idea.  My money would be on the former but I really don't know.

Comment 3

[Lars T Hansen]

(In reply to comment #2)
> (In reply to comment #1)
> > Was this was injected (e.g. by my in-operator changes) or has it been this
> > way since Vector was introduced?
> 
> I have no idea.  My money would be on the former but I really don't know.

Sorry, I miswrote.  My money would be on the latter: that it's been this way since Vector was introduced.

Comment 4

[Sylvestre Ledru [:Sylvestre]]

Tamarin isn't maintained anymore. WONTFIX remaining bugs.