Schemata

21 Feb 2001

      Hello,

while working with schemata in gpc I encountered a problem:

In the following program it seems the "array of vektor" a^ is created
with the correct size but the components of the array do not know about
their own size. I do not know if this is the expected behaviour. May be
the compiler should either not allow this construct or otherwise
initialize the array. 

*********************************************************************************

TYPE	vektor(n: Integer)=array[0..n-1]of double;

	vektorarray(n: Integer)=array[1..100]of vektor(n);

VAR	a: ^vektorarray;

BEGIN	new(a, 3);

	WriteLn(a^.n); { gives 3 }
	WriteLn(a^[10].n); { gives 0, should it be 3 ? }

	WriteLn(Sizeof(a^) );
	{Writeln(Sizeof(a^[10]) );}  
		{would result in compiler error " `SizeOf' applied to an
undiscriminated schema " }
END.

**********************************************************************************
The output is:

3
0
2804

I am using 
gpc version 19991030, based on 2.95.2 19991024 (release)

Sven

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Z  * Sven Sahle  (tel ++49 721 8100 1002, fax ++49 721 8100 1139)      
K  * Zentrum fuer Kunst und Medientechnologie 
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