Oops��� I didn���t implemented #pointer for floats��� it should be something like this:

Float>>#pointer 
^ (ByteArray new: FFIExternalType pointerSize)
floatAt: 1 put: self;
yourself

can you test it?
(and you can commit it to Pharo/NB-FFI repo��� I���m taking a plane now and I do not have the time until thursday :( )

Esteban

On 12 Feb 2016, at 16:46, Aliaksei Syrel <alex.syrel@gmail.com> wrote:

We have two identical bloc images built on ci with one day difference and no changes to bloc
https://ci.inria.fr/pharo-contribution/job/Bloc/26/  - works
https://ci.inria.fr/pharo-contribution/job/Bloc/27/ - drawing crashes with the following error:

<Screen Shot 2016-02-12 at 16.33.51.png>

Looks like fix to issue https://pharo.fogbugz.com/f/cases/17564 in #50579 causes bug.

Cheers,
Alex