[GiNaC-list] Possible size issue in test in numeric.cpp

Pierangelo Masarati masarati at aero.polimi.it
Wed Aug 16 16:24:06 CEST 2006

Jens Vollinga writes: 

> thanks for your patch! We had a discussion about it on the other GiNaC 
> mailing list (ginac-devel) and we are going to apply it. It will be part 
> of the forthcoming 1.3.5 release then. 
> @Richy:
> You wondered why the other ctor for unsigned int doesn't raise such a 
> warning. After looking at the code I now wonder whether the code there is 
> optimal. The argument is compared against 2^(cl_value_len-1) and not 
> 2^(cl_value_len)-1 as one might expect. Maybe this should be changed? 
> Could you comment on this soon, because I'd like to roll the release this 
> evening?

I agree it should be 

       i < ((1UL << cl_value_len)-1) 

In this case, a fix similar to the "int" case on 64 bit architectires would 
apply, since a "unsigned" will always be less than 2^32.  A patch is 
available at 


Cheers, p. 

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