From: Yukihiro Matsumoto <matz@...>
Date: 2006-10-12T08:23:57+09:00
Subject: Re: [ ruby-Bugs-6090 ] Loop over array.delete breaks at first hit

Hi,

In message "Re: [ ruby-Bugs-6090 ] Loop over array.delete breaks at first hit"
    on Thu, 12 Oct 2006 04:42:08 +0900, mathew <meta@pobox.com> writes:

|As far as deleting elements from a collection while iterating over it, I
|would expect the behavior to be undefined. Depending on the implementation
|of the collection you might end up skipping elements, accessing unallocated
|memory, causing an out of bounds error, or (as in this case) terminating too
|soon. The surprising thing would be if it magically divined the programmer's
|intent and worked.

You are right, except that array iteration does check memory boundary
to avoid accessing unallocated memory.  Yesterday, I have tried to add
the code to detect this problem automagically but the check was too
strict to bother other working programs.

							matz.