ingo <ing### [at] homenl> wrote in message
news:8F7FD9A61seed7@204.213.191.228...
> 1. Is there a limit to the size of a df3 file that can be used with
> "i_dat3d"? A 100^3 file parses ok. A 150^3 file gives the error:
>
> #declare Func={"data_3d_3",<1> library "i_dat3d",
> "pytest.df3",<150,150,150,5>  <----- Error
> ..\box_erode.pov:62 error: out of memory, cannot allocate -4764052 bytes
> for Lib.

The cause is a bug in the initialization.
The MegaPOV 0.5 source level fix is to change line 1216 in isosurf.c from

        char df3header[6];
to

        unsigned char df3header[6];

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