I am running RH8 with all updates and most recent Intel Fortran and debugger.
ddd --ladebug --debugger idb myfile
comes up fine. I'm able to set breakpoints and run to the breakpoint. I can do a "cont" to the next breakpoint and so on.
The problems is that if I try to "step" or "next" I get the error "Source file 'mydir/,' cannot be found." In other words, my source file is replaced with the ",".