Nico <rou### [at] loriafr> wrote:

> But when I render the screen.pov example file I get the attached image.

I get the same image in a MingW (gcc 3.2) compile. 
recompiling without -ffastmath fixes this.

Minimal scene that will show the bug:

//#declare epsilon = 0.000000000000001; // this works
#declare epsilon = 0;                   // this not
box {
 0, <1,1,epsilon>
 pigment {color rgb 0}
 translate <-0.5,-0.5,0>+2*z
 scale 0.02
}
background{color rgb 1}

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