With the professional version of LabVIEW, you have the Tools>Profile>VI Metrics option. This will report number of "nodes' which you might roughly compare to source lines of code. Where I work, we use a separate bug tracking program to report defects and can assign different levels of severity. I don't know if you can input information such as source lines of code to create a report but I you can export a bug list to create an report in Excel for example. I don't think I've heard of anyone here doing that though. The only metric we look at (at least for product application code) is the total number of major defects.
