Hi Jose, 2015-07-14 8:59 GMT+02:00 Jose San Leandro <jose.sanleandro@osoco.es>:

Hi,

I'm experiencing an issue when using whileFalse:, in Pharo 4.

I've just looking for opened bugs in pharo.fogbugz.com but I don't see any matching my problem, apparently.

In the following example, I get a SubscriptOutOfBounds: 0.

Object subclass: #WhileFalseIssue instanceVariableNames: 'myFlag' classVariableNames: '' category: 'MyTests'

WhileFalseIssue>>attemptUninitialized [ myFlag ] whileFalse: [myFlag := true ]. ^ myFlag.

WhileFalseIssue>>attemptInitialized myFlag := false. [ myFlag ] whileFalse: [myFlag := true ]. ^ myFlag.

Calling attempt like this:

WhileFalseIssue new attemptUninitialized.

launches the debugger with "SubscriptOutOfBounds: 0" (see attached screenshot), whereas

WhileFalseIssue new attemptInitialized.

works fine.

Should I file in a bug in fogbugz? I will try with Pharo 5.

Yes please. (It fails on pharo 5, too).

Kind regards, Jose.