Well no it is an error since the classes are in an invalid state. It is not possible to do all migrations with Monticello and keep all classes in a sane condition all the time. Just image moving an instance variable from a subclass which is in one monticello package B to a superclass which is in another package A. If the default load order is A - B then you will have all of a sudden a double variable declaration. In any case, the old class builder was very permissive and it even let you continue to work with classes with invalid layout states (for instance the duplicate variables, or incompatibly subclass layouts). For as long as you don't have instances and you do not use these classes there is not really a problem. On 2013-09-11, at 16:31, kilon <thekilon@yahoo.co.uk> wrote:
So this mean this is more of a warning than an error and it does not really affect the installation of NBOpenGL ?
and what it means by "invalid state for a small period" ? is that a bytecode issue or an object issue ?
Camillo Bruni-3 wrote
yeah we have to have solve this somehow, it is a side-effect of the new class-builder which actually properly validates the layouts of classes.
If you modify classes with monticello they might end up in an invalid state for a short period. Previously this went undetected, the SlotClassBuilder is very picky about this :(.
Maybe an intermediate solution for this is to disable any kind of validation while we load stuff with Monticello...
On 2013-09-11, at 15:13, kilon <
thekilon@.co
> wrote:
IcompatibleLayoutConflict: Class with PointerLayout cannot be extended as byte
is the error i am getting using the very latest pharo 3.0 image while trying to load NBOpengl
(ConfigurationOfNBOpenGL project version: '2.0') load.
here is the full trace
I get the same error in macos and ubuntu, I suspect windoom is same too.
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