david sharp <dsh### [at] interportnet> wrote in message
news:3929d1ce@news.povray.org...
>
> David Fontaine <dav### [at] faricynet> wrote
>
> > This code crashes MegaPOV 0.4 and 0.5. (Oh, and it's not the tan(pi/2),
> > because changing the v-bound to pi-.001 or similar does not fix it.)
> >
> > #include "colors.inc"
> > #version unofficial MegaPOV 0.5;
> >
> > #declare KuenSurface = parametric {
> >    function (2*sqrt(1+u^2)*cos(u-atan2(u,1))*sin(v))/(1+u^2*sin(v)^2),
> >             (2*sqrt(1+u^2)*sin(u-atan2(u,1))*sin(v))/(1+u^2*sin(v)^2),
> >             ln(tan(.5*v))+(2*cos(v))/(1+u^2+sin(v)^2)
> >    <0,0>,<2*pi,pi>
> >    <-5,-5,-5>,<5,5,5>
> > }
> >

MEGAPOV caused an invalid page fault in
module MEGAPOV.EXE at 0167:0041df74.
Registers:
EAX=00000000 CS=0167 EIP=0041df74 EFLGS=00010246
EBX=0091f1e8 SS=016f ESP=01ddfed8 EBP=01ddff8c
ECX=00000000 DS=016f ESI=0091f858 FS=128f
EDX=00000015 ES=016f EDI=00000000 GS=0000
Bytes at CS:EIP:
ff 00 c3 90 90 90 90 90 90 90 90 90 56 8b 74 24
Stack dump:
0041d90c 00000000 00000000 0091f548 0091f6a8 0091f7c8 00000000 00000000
0091f858 00449026 0091f858 00000000 00000000 01ddff8c 816416d8 004509ee

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