floating point exception

[Mappopo]

Hi,
I am trying to port a windows application in linux.  It crashes at a
function call reporting the following output:
floating point exception

The function accept as parameters some function  pointers, some numeric
values and some objects passed by reference.

A debugging print at the very beginning of the function is not executed.
Where is the error?

Because of the parameter passing by reference, I expected no copy
constructor is invoked, or not?

Thank in advance