[squeak-dev] Endless recursion: "String new: -1"
Levente Uzonyi
leves at caesar.elte.hu
Thu Jul 7 07:23:14 UTC 2016
Someone seems to have trimmed the versions in the changes file. In Squeak
4.4 Behavior >> #basicNew: had the following body:
<primitive: 71>
self isVariable ifFalse:
[self error: self printString, ' cannot have variable sized instances'].
(sizeRequested isInteger and: [sizeRequested >= 0]) ifTrue:
["arg okay; space must be low."
OutOfMemory signal.
^ self basicNew: sizeRequested "retry if user proceeds"].
self primitiveFailed
So, non-integer and negative arguments were primitive failures.
Levente
On Wed, 6 Jul 2016, David T. Lewis wrote:
> On Wed, Jul 06, 2016 at 06:43:25AM -0700, marcel.taeumel wrote:
>> Hi, there!
>>
>> Is it okay that there is an endless recursion when evaluating "String new: -1"?
>
> No, it is not okay. It should fail with a primitive failure.
>
> Dave
>
>
>>
>> ...
>> ByteString class(Behavior)>>handleFailingFailingBasicNew:
>> ByteString class(Behavior)>>handleFailingBasicNew:
>> ByteString class(Behavior)>>basicNew:
>> ByteString class(Behavior)>>handleFailingFailingBasicNew:
>> ByteString class(Behavior)>>handleFailingBasicNew:
>> ByteString class(Behavior)>>basicNew:
>> ByteString class(Behavior)>>handleFailingFailingBasicNew:
>> ByteString class(Behavior)>>handleFailingBasicNew:
>> ByteString class(Behavior)>>basicNew:
>> ...
>>
>> I would like to have an error signaled instead. Note that the -1 is just an
>> example for a bad computation. The error I get is "Space is low" then. :-)
>>
>>
>> Best,
>> Marcel
>>
>>
>>
>> --
>> View this message in context: http://forum.world.st/Endless-recursion-String-new-1-tp4905179.html
>> Sent from the Squeak - Dev mailing list archive at Nabble.com.
>
>
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