[Vm-dev] For how long UUID issue will bite us? (Was: Re: [squeak-dev] Closure testers needed)

[Bryce Kampjes]

On Sat, 2009-07-18 at 14:11 -0400, David T. Lewis wrote:
> On Sat, Jul 18, 2009 at 08:33:32AM +0200, Brent Pinkney wrote:
> >  
> > > As a workaround, how is this?
> > > 
> > > UUID>>initialize
> > > 	"Some unix versions crash with the UUID prim, so disable it for all of 'em"
> > > 	Smalltalk platformName = 'unix'
> > > 		ifTrue:[UUIDGenerator default generateBytes: self forVersion: 4]
> > > 		ifFalse:[self primMakeUUID].
> > 
> > No lads, we use this in a production telco environment - lets fix it properly.
> 
> Agreed.
> 
> Someone (faried) has added an additional Mantis report on this problem, see
> http://bugs.squeak.org/view.php?id=7371.
> 
> The new bug report contains some useful gdb output showing a segfault occuring
> in the actual uuid_generate() library call. The VM support code wrapping this
> call looks dead simple, so I'm hard pressed to see how that could be wrong.
> This plugin is trivial; we must be missing something obvious.
> 
> Note, I'm not actually working on this bug, and I've never seen it happen. I'm
> just tracking it in Mantis and hoping that someone can point to a solution.

I think another work around was to increase the size of the Squeak UUID
object by a byte which suggests the bug is an off by one error.

Bryce