Margus Ramst wrote:
> 
> Tor Olav Kristensen wrote:
> >
> > I have been a little bit worried about my use of semicolons.
> >
> > Earlier I have seen that too many missing semicolons can
> > cause crashes of POV-Ray (on my Windows 98 machine at home,
> > and if I remember right, also on my Windows NT4 machine at
> > work).
> 
> This is new to me. You mean the machine crached? Or just POV quit parsing?
> Usually, missing semi-colons should only produce warnings (at least in the
> current version). Only in some macros have I seen actual errors caused by them.
> 

I mean that as far as I remember, POV-Ray stopped executing and Windows 
gave me an error message like: 

This application has performed an illegal operation...

(When I restarted POV-Ray, reloaded the offending POV-file and tried 
to run it again, I got the same crash. And when I thereafter added all
the 
necessary semi-colons POV-Ray executed correctly again.)

Earlier I had not got used to typing semi-colons at the end of float 
and vector declarations, so I saw these error messages once or twice a 
month or so, but now I usually forget very few of the semi-colons, so I 
seldom see these crashes.

If it happens again I will provide you with the offending POV-file.


Btw. Do you have any idea of how POV-Ray manage to give me several 
different error messages after successive runs (without me altering 
my code or any settings in POV-Ray) ?

For me this seems like POV-Ray is in error ...

(Or could my error trigger several error messages, where only a 
random selected one is printed each time?)

The funny thing is that none of the keywords ('clock_delta', 'tan', 
'on') that POV-Ray claims it found in a wrong place, appears in my 
POV-file. 

error: undeclared identifier expected but float function 'clock_delta' 
found instead.

> > ... So now I am totally confused about semi-colons!
> >
> 
> Semi-colons should only go after declarations of floats and vectors (colours can
> also be thought of as vectors).
> If you are declaring an array, it should not have a semi-colon:
> 
> #declare MyArray=array[10]
> 
> If the docs said otherwse, this is a typo. However, if you are declaring an
> element of an array, and that element is a float or a vector, it should have a
> semi-colon:
> 

Thanks for clarifying!

> #declare MyArray[0]=11.5;
> 
> See docs section "Declaring identifiers" for further reference.
> 
> Margus


Regards

Tor Olav

-- 
mailto:tor### [at] hotmailcom
http://www.crosswinds.net/~tok/tokrays.html

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