Modification of struct crashes mantra

[Green-Man]

Hi!

I'm trying to organize some of my vex shaders. And trying to use struct for that.

But this kind of code crashes my mantra:

struct RayInfo { float clr; }

surface structVar(){
    RayInfo ray = { 0.0 };
    if( ptransform("space:world", P )[2] < 0.0 )
	    ray.clr = 1.0;
    Cf = ray.clr;
}[/CODE]

So, it seems to crash only if try my modify struct non-uniformly.

Is it even legal to do like this, or structs are supposed to be constant?

Just in case, the compiled .otl version is in the attachment.

struct.otl