Object too big

[Xavier-Francois Roblot <roblot@euler.univ-lyon1.fr>]

Hi,

I'm getting the following error:

  ***   object too big, length can't fit in a codeword

when I want to create a vector of large size. Now, I'd like to know what
is the maximal length I can ask for. Looking at the code, I find that
this maximal length is related to LGBITS which is defined by:

#define LGBITS      ((1UL<<LGnumBITS)-1)

and there I'm lost. 

I would very grateful if anyone could help figure out what this value
is.

Xavier