Debugger problems

[John Swensen]

I am starting work again on making the debugger more compatible with  
Matlab, but I think a problem was introduced when the object branch  
was checked in.  Now, when I try to set a breakpoint, it tells me:
error: octave_base_value::user_function_value(): wrong type argument  
`<unknown type>'
error: add_breakpoint: unable to find the function requested
However, if I first call the function, then try to set the breakpoint,  
there are no problems.  So I think the problem is that somehow the new  
use of symbol_table::find_user_function (fname) behaves differently  
than how I used to do it with curr_sym_tab->lookup (fname).  I looked  
through symtab.h to see if there is a member function of the  
symbol_table singleton that would first "load" the function before  
setting the breakpoint, but couldn't find anything.

Any suggestions?

John Swensen